From 917b21fe49a3beb7c73864e939880f8e41ab4e77 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Thu, 5 Mar 2026 12:14:44 +0000
Subject: [PATCH 01/17] Added command shell to display the ls directory
 content. Added -1 that allow on file by line.

---
 individual-shell-tools/ls/script-01.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/ls/script-01.sh b/individual-shell-tools/ls/script-01.sh
index 241b62f5e..071d4ba67 100755
--- a/individual-shell-tools/ls/script-01.sh
+++ b/individual-shell-tools/ls/script-01.sh
@@ -13,3 +13,4 @@ fi
 
 # TODO: Write a command to list the files and folders in this directory.
 # The output should be a list of names including child-directory, script-01.sh, script-02.sh, and more.
+ls -1
\ No newline at end of file

From 330e8bbc5736062280bed9868673a8ef97d543dc Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 10:28:58 +0000
Subject: [PATCH 02/17] Solve exercise, the 2, the child-directory.

---
 individual-shell-tools/ls/script-02.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/ls/script-02.sh b/individual-shell-tools/ls/script-02.sh
index d0a5a10f4..758b7b1e1 100755
--- a/individual-shell-tools/ls/script-02.sh
+++ b/individual-shell-tools/ls/script-02.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command which lists all of the files in the directory named child-directory.
 # The output should be a list of names: helper-1.txt, helper-2.txt, helper-3.txt.
+ls -1 ./child-directory
\ No newline at end of file

From 28edf23f403271862e7627f58bd1387c0c1ae7bc Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 10:36:05 +0000
Subject: [PATCH 03/17] Resolve exercise 3, display all folders and files.

---
 individual-shell-tools/ls/script-03.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/ls/script-03.sh b/individual-shell-tools/ls/script-03.sh
index 781216d21..89898a5b2 100755
--- a/individual-shell-tools/ls/script-03.sh
+++ b/individual-shell-tools/ls/script-03.sh
@@ -5,3 +5,4 @@ set -euo pipefail
 # TODO: Write a command which _recursively_ lists all of the files and folders in this directory _and_ all of the files inside those folders.
 # The output should be a list of names including: child-directory, script-01.sh, helper-1.txt (and more).
 # The formatting of the output doesn't matter.
+ls -R -1
\ No newline at end of file

From 0134a1dba98ecc00660f802664f6333f16459bc6 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 10:43:53 +0000
Subject: [PATCH 04/17] Sort and display the files the newest first, then
 opposite.

---
 individual-shell-tools/ls/script-04.sh | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/individual-shell-tools/ls/script-04.sh b/individual-shell-tools/ls/script-04.sh
index 72f3817b3..0c3d42d41 100755
--- a/individual-shell-tools/ls/script-04.sh
+++ b/individual-shell-tools/ls/script-04.sh
@@ -15,9 +15,11 @@ echo "First exercise (sorted newest to oldest):"
 
 # TODO: Write a command which lists the files in the child-directory directory, one per line, sorted so that the most recently modified file is first.
 # The output should be a list of names in this order, one per line: helper-3.txt, helper-1.txt, helper-2.txt.
-
+ls -1t -1 ./child-directory
 
 echo "Second exercise (sorted oldest to newest):"
 
 # TODO: Write a command which does the same as above, but sorted in the opposite order (oldest first).
 # The output should be a list of names in this order, one per line: helper-2.txt, helper-1.txt, helper-3.txt.
+
+ls -1tr  ./child-directory
\ No newline at end of file

From 9d39682ffc213ac5b903bd3acdb1527ab61b036f Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 10:51:18 +0000
Subject: [PATCH 05/17] Use cat to display files content.

---
 individual-shell-tools/cat/script-01.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/cat/script-01.sh b/individual-shell-tools/cat/script-01.sh
index c85053e0f..2f0ac6d4e 100755
--- a/individual-shell-tools/cat/script-01.sh
+++ b/individual-shell-tools/cat/script-01.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the contents of the helper-1.txt file inside the helper-files directory to the terminal.
 # The output of this command should be "Once upon a time...".
+cat helper-files/helper-1.txt
\ No newline at end of file

From 10709e90bcaa13af48fc519f8a0d2826d21d4c9b Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 10:58:56 +0000
Subject: [PATCH 06/17] DIsplay multiple files content.

---
 individual-shell-tools/cat/script-02.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/cat/script-02.sh b/individual-shell-tools/cat/script-02.sh
index 01bbd5eab..a85bd6f7b 100755
--- a/individual-shell-tools/cat/script-02.sh
+++ b/individual-shell-tools/cat/script-02.sh
@@ -11,3 +11,4 @@ set -euo pipefail
 # It looked delicious.
 # I was tempted to take a bite of it.
 # But this seemed like a bad idea...
+cat helper-files/helper-1.txt helper-files/helper-2.txt helper-files/helper-3.txt
\ No newline at end of file

From 5e92510ad3d4c774f6f3d295412613da01fc6b9c Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 11:02:25 +0000
Subject: [PATCH 07/17] Display line numbers.

---
 individual-shell-tools/cat/script-03.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/individual-shell-tools/cat/script-03.sh b/individual-shell-tools/cat/script-03.sh
index 37573b0c1..331a8eb2a 100755
--- a/individual-shell-tools/cat/script-03.sh
+++ b/individual-shell-tools/cat/script-03.sh
@@ -9,3 +9,5 @@ set -euo pipefail
 # 1 It looked delicious.
 # 2 I was tempted to take a bite of it.
 # 3 But this seemed like a bad idea...
+
+cat -n helper-files/helper-3.txt

From f6345e2e2316e74cfdee8da18af1fd010941bd99 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 11:07:12 +0000
Subject: [PATCH 08/17] Display the the whole content files, using line
 numbers.

---
 individual-shell-tools/cat/script-04-stretch.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/cat/script-04-stretch.sh b/individual-shell-tools/cat/script-04-stretch.sh
index 00fe3c48b..51f8c23ad 100755
--- a/individual-shell-tools/cat/script-04-stretch.sh
+++ b/individual-shell-tools/cat/script-04-stretch.sh
@@ -13,3 +13,4 @@ set -euo pipefail
 # 3 It looked delicious.
 # 4 I was tempted to take a bite of it.
 # 5 But this seemed like a bad idea...
+cat -n helper-files/*
\ No newline at end of file

From 0fd2c18dd9afeddf0147c6ecff9a6941d2638202 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 11:14:32 +0000
Subject: [PATCH 09/17] Using cw command to count words in a file.

---
 individual-shell-tools/wc/script-01.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/wc/script-01.sh b/individual-shell-tools/wc/script-01.sh
index c9dd6e5df..17d35ef66 100755
--- a/individual-shell-tools/wc/script-01.sh
+++ b/individual-shell-tools/wc/script-01.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the number of words in the file helper-files/helper-3.txt.
 # The output should include the number 19. The output should not include the number 92.
+wc  -w helper-files/helper-3.txt    
\ No newline at end of file

From 4a5120e664f802fc4c19508adca1c91abfc11750 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 11:16:24 +0000
Subject: [PATCH 10/17] Display lines.

---
 individual-shell-tools/wc/script-02.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/wc/script-02.sh b/individual-shell-tools/wc/script-02.sh
index 8feeb1a62..cdd372b18 100755
--- a/individual-shell-tools/wc/script-02.sh
+++ b/individual-shell-tools/wc/script-02.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the number of lines in the file helper-files/helper-3.txt.
 # The output should include the number 3. The output should not include the number 19.
+wc -l helper-files/helper-3.txt
\ No newline at end of file

From ce1ffac3a0084ace1bc2b69ea31e9f967c1020b4 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 11:21:21 +0000
Subject: [PATCH 11/17] Display the whole content, lines, words, characters.

---
 individual-shell-tools/wc/script-03.sh | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/individual-shell-tools/wc/script-03.sh b/individual-shell-tools/wc/script-03.sh
index 6b2e9d3d1..5fa01db1e 100755
--- a/individual-shell-tools/wc/script-03.sh
+++ b/individual-shell-tools/wc/script-03.sh
@@ -8,3 +8,5 @@ set -euo pipefail
 #        1       7      39 ../helper-files/helper-2.txt
 #        3      19      92 ../helper-files/helper-3.txt
 #        5      30     151 total
+
+wc helper-files/*
\ No newline at end of file

From bbbd29e946927b23d363cc6441f802304417e7bb Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 11:33:37 +0000
Subject: [PATCH 12/17] Display every line dialogue by the doctor, using  Caret
 to check the start of the line.

---
 individual-shell-tools/grep/script-01.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/grep/script-01.sh b/individual-shell-tools/grep/script-01.sh
index fb05f42f2..def41f899 100755
--- a/individual-shell-tools/grep/script-01.sh
+++ b/individual-shell-tools/grep/script-01.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt said by the Doctor.
 # The output should contain 6 lines.
+grep '^Doctor:' ./grep/dialogue.txt 
\ No newline at end of file

From 4d7e977d93e0b41f812d98b0853ae203de191126 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 11:38:04 +0000
Subject: [PATCH 13/17] Displaying words regardless of case.

---
 individual-shell-tools/grep/script-02.sh | 1 +
 1 file changed, 1 insertion(+)

diff --git a/individual-shell-tools/grep/script-02.sh b/individual-shell-tools/grep/script-02.sh
index df6f85640..2e367aea3 100755
--- a/individual-shell-tools/grep/script-02.sh
+++ b/individual-shell-tools/grep/script-02.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that contains the word Doctor (regardless of case).
 # The output should contain 9 lines.
+grep -i 'Doctor' grep/dialogue.txt 
\ No newline at end of file

From c272f15709e2ff10130193d183fea1d6ffecbc84 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Fri, 6 Mar 2026 13:20:38 +0000
Subject: [PATCH 14/17] COmpleting exercises that walk through grep command.

---
 individual-shell-tools/grep/script-01.sh | 2 +-
 individual-shell-tools/grep/script-02.sh | 2 +-
 individual-shell-tools/grep/script-03.sh | 1 +
 individual-shell-tools/grep/script-04.sh | 1 +
 individual-shell-tools/grep/script-05.sh | 1 +
 individual-shell-tools/grep/script-06.sh | 1 +
 individual-shell-tools/grep/script-07.sh | 1 +
 7 files changed, 7 insertions(+), 2 deletions(-)

diff --git a/individual-shell-tools/grep/script-01.sh b/individual-shell-tools/grep/script-01.sh
index def41f899..6da55c85a 100755
--- a/individual-shell-tools/grep/script-01.sh
+++ b/individual-shell-tools/grep/script-01.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt said by the Doctor.
 # The output should contain 6 lines.
-grep '^Doctor:' ./grep/dialogue.txt 
\ No newline at end of file
+grep '^Doctor:' dialogue.txt 
\ No newline at end of file
diff --git a/individual-shell-tools/grep/script-02.sh b/individual-shell-tools/grep/script-02.sh
index 2e367aea3..5e2a31132 100755
--- a/individual-shell-tools/grep/script-02.sh
+++ b/individual-shell-tools/grep/script-02.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that contains the word Doctor (regardless of case).
 # The output should contain 9 lines.
-grep -i 'Doctor' grep/dialogue.txt 
\ No newline at end of file
+grep -i 'Doctor' dialogue.txt 
\ No newline at end of file
diff --git a/individual-shell-tools/grep/script-03.sh b/individual-shell-tools/grep/script-03.sh
index 5383fe578..5024cb62c 100755
--- a/individual-shell-tools/grep/script-03.sh
+++ b/individual-shell-tools/grep/script-03.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the number of lines in dialogue.txt that contain the word Doctor (regardless of case).
 # The output should be exactly the number 9.
+grep -i "Doctor" dialogue.txt | wc -l
\ No newline at end of file
diff --git a/individual-shell-tools/grep/script-04.sh b/individual-shell-tools/grep/script-04.sh
index 80ee04776..1056907df 100755
--- a/individual-shell-tools/grep/script-04.sh
+++ b/individual-shell-tools/grep/script-04.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that does not contain the word "Hello" (regardless of case).
 # The output should contain 10 lines.
+grep -vi "hello" dialogue.txt | wc -l
\ No newline at end of file
diff --git a/individual-shell-tools/grep/script-05.sh b/individual-shell-tools/grep/script-05.sh
index 1eb538185..a7e28a473 100755
--- a/individual-shell-tools/grep/script-05.sh
+++ b/individual-shell-tools/grep/script-05.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that contains the string "cure", as well as the line before that line.
 # The output should contain two pairs of two lines of text (with a separator between them).
+grep -B 1 "cure" dialogue.txt
\ No newline at end of file
diff --git a/individual-shell-tools/grep/script-06.sh b/individual-shell-tools/grep/script-06.sh
index 5670e3b6c..0982dceff 100755
--- a/individual-shell-tools/grep/script-06.sh
+++ b/individual-shell-tools/grep/script-06.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the name of every `.txt` file in this directory which contains a line of dialogue said by the Doctor.
 # The output should contain two filenames.
+grep -l 'Doctor' *.txt
\ No newline at end of file
diff --git a/individual-shell-tools/grep/script-07.sh b/individual-shell-tools/grep/script-07.sh
index 9670ebad9..960209981 100755
--- a/individual-shell-tools/grep/script-07.sh
+++ b/individual-shell-tools/grep/script-07.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output, for each `.txt` file in this directory, how many lines of dialogue the Doctor has.
 # The output should show that dialogue.txt contains 6 lines, dialogue-2.txt contains 2, and dialogue-3.txt contains 0.
+grep -c '^Doctor:' *.txt 
\ No newline at end of file

From 13afd0907127e61dc02d8b9ee0a49cf86aed5507 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Sun, 8 Mar 2026 09:35:39 +0000
Subject: [PATCH 15/17] Completing exercises using sed command.

---
 individual-shell-tools/sed/script-01.sh | 1 +
 individual-shell-tools/sed/script-02.sh | 1 +
 individual-shell-tools/sed/script-03.sh | 1 +
 individual-shell-tools/sed/script-04.sh | 2 ++
 individual-shell-tools/sed/script-05.sh | 1 +
 individual-shell-tools/sed/script-06.sh | 1 +
 6 files changed, 7 insertions(+)

diff --git a/individual-shell-tools/sed/script-01.sh b/individual-shell-tools/sed/script-01.sh
index 3eba6fa4d..57faad5ba 100755
--- a/individual-shell-tools/sed/script-01.sh
+++ b/individual-shell-tools/sed/script-01.sh
@@ -5,3 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output input.txt with all occurrences of the letter `i` replaced with `I`.
 # The output should contain 11 lines.
 # The first line of the output should be: "ThIs Is a sample fIle for experImentIng with sed.".
+sed 's/i/I/g' input.txt
\ No newline at end of file
diff --git a/individual-shell-tools/sed/script-02.sh b/individual-shell-tools/sed/script-02.sh
index abdd64d06..d3f70b8ce 100755
--- a/individual-shell-tools/sed/script-02.sh
+++ b/individual-shell-tools/sed/script-02.sh
@@ -5,3 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output input.txt with numbers removed.
 # The output should contain 11 lines.
 # Line 6 of the output should be " Alisha".
+sed 's/[0-9]//g' input.txt
\ No newline at end of file
diff --git a/individual-shell-tools/sed/script-03.sh b/individual-shell-tools/sed/script-03.sh
index dd284a296..07cb6a27c 100755
--- a/individual-shell-tools/sed/script-03.sh
+++ b/individual-shell-tools/sed/script-03.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output input.txt removing any line which contains a number.
 # The output should contain 6 lines.
+sed  '/[0-9]/d' input.txt
\ No newline at end of file
diff --git a/individual-shell-tools/sed/script-04.sh b/individual-shell-tools/sed/script-04.sh
index 0052ac6c4..ae19f6735 100755
--- a/individual-shell-tools/sed/script-04.sh
+++ b/individual-shell-tools/sed/script-04.sh
@@ -4,3 +4,5 @@ set -euo pipefail
 
 # TODO: Write a command to output input.txt replacing every occurrence of the string "We'll" with "We will".
 # The output should contain 11 lines.
+
+sed "s/We'll/We will/g" input.txt
\ No newline at end of file
diff --git a/individual-shell-tools/sed/script-05.sh b/individual-shell-tools/sed/script-05.sh
index 2dcc91a0c..6f1b7cba0 100755
--- a/individual-shell-tools/sed/script-05.sh
+++ b/individual-shell-tools/sed/script-05.sh
@@ -6,3 +6,4 @@ set -euo pipefail
 # If a line starts with a number and a space, make the line instead end with a space and the number.
 # So line 6 which currently reads "37 Alisha" should instead read "Alisha 37".
 # The output should contain 11 lines.
+sed -E 's/^([0-9]+) (.*)/\2 \1/' input.txt
\ No newline at end of file
diff --git a/individual-shell-tools/sed/script-06.sh b/individual-shell-tools/sed/script-06.sh
index 0b9390170..83a2adf02 100755
--- a/individual-shell-tools/sed/script-06.sh
+++ b/individual-shell-tools/sed/script-06.sh
@@ -8,3 +8,4 @@ set -euo pipefail
 # The output should contain 11 lines.
 # Line 3 should be "It contains many lines, and there are some things you may want to do with each of them.".
 # Line 11 should be "We also should remember, when we go shopping, to get 4 items: oranges, cheese, bread, olives.".
+sed -E 's/,([^ ])/, \1/g' input.txt
\ No newline at end of file

From dd32ac084bd8953935bae312115c07d7ce95f29a Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Sun, 8 Mar 2026 10:02:24 +0000
Subject: [PATCH 16/17] Complete exercises using awk command line.

---
 individual-shell-tools/awk/script-01.sh         | 1 +
 individual-shell-tools/awk/script-02.sh         | 1 +
 individual-shell-tools/awk/script-03.sh         | 1 +
 individual-shell-tools/awk/script-04.sh         | 1 +
 individual-shell-tools/awk/script-05.sh         | 1 +
 individual-shell-tools/awk/script-06-stretch.sh | 1 +
 individual-shell-tools/awk/script-07-stretch.sh | 1 +
 7 files changed, 7 insertions(+)

diff --git a/individual-shell-tools/awk/script-01.sh b/individual-shell-tools/awk/script-01.sh
index 8db4390af..824e4c58b 100755
--- a/individual-shell-tools/awk/script-01.sh
+++ b/individual-shell-tools/awk/script-01.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output just the names of each player in `scores-table.txt`.
 # Your output should contain 6 lines, each with just one word on it.
+awk '{print $1}' scores-table.txt
\ No newline at end of file
diff --git a/individual-shell-tools/awk/script-02.sh b/individual-shell-tools/awk/script-02.sh
index 5956be9bd..5559ca2fb 100755
--- a/individual-shell-tools/awk/script-02.sh
+++ b/individual-shell-tools/awk/script-02.sh
@@ -4,3 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the names of each player, as well as their city.
 # Your output should contain 6 lines, each with two words on it, separated by a space.
+awk '{print $1, $2}' scores-table.txt
\ No newline at end of file
diff --git a/individual-shell-tools/awk/script-03.sh b/individual-shell-tools/awk/script-03.sh
index af7c6e8b9..87c511f6e 100755
--- a/individual-shell-tools/awk/script-03.sh
+++ b/individual-shell-tools/awk/script-03.sh
@@ -5,3 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player along with the score from their first attempt.
 # Your output should contain 6 lines, each with one word and one number on it.
 # The first line should be "Ahmed 1".
+awk '{print $1, $3}' scores-table.txt
\ No newline at end of file
diff --git a/individual-shell-tools/awk/script-04.sh b/individual-shell-tools/awk/script-04.sh
index bf15703c7..23d8eaf7b 100755
--- a/individual-shell-tools/awk/script-04.sh
+++ b/individual-shell-tools/awk/script-04.sh
@@ -5,3 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player in London along with the score from their last attempt.
 # Your output should contain 3 lines, each with one word and one number on it.
 # The first line should be "Ahmed 4".
+awk '$2 == "London" {print $1, $NF}' scores-table.txt
\ No newline at end of file
diff --git a/individual-shell-tools/awk/script-05.sh b/individual-shell-tools/awk/script-05.sh
index d1680cb02..d4826569b 100755
--- a/individual-shell-tools/awk/script-05.sh
+++ b/individual-shell-tools/awk/script-05.sh
@@ -5,3 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player along with the number of times they've played the game.
 # Your output should contain 6 lines, each with one word and one number on it.
 # The first line should be "Ahmed 3".
+awk '{print $1, NF - 2}' scores-table.txt
\ No newline at end of file
diff --git a/individual-shell-tools/awk/script-06-stretch.sh b/individual-shell-tools/awk/script-06-stretch.sh
index 0201e6378..6a268bbeb 100755
--- a/individual-shell-tools/awk/script-06-stretch.sh
+++ b/individual-shell-tools/awk/script-06-stretch.sh
@@ -6,3 +6,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the total of adding together all players' first scores.
 # Your output should be exactly the number 54.
+awk '{sum += $3} END {print sum}' scores-table.txt
\ No newline at end of file
diff --git a/individual-shell-tools/awk/script-07-stretch.sh b/individual-shell-tools/awk/script-07-stretch.sh
index 3f7155880..8da1bedf7 100755
--- a/individual-shell-tools/awk/script-07-stretch.sh
+++ b/individual-shell-tools/awk/script-07-stretch.sh
@@ -7,3 +7,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player along with the total of adding all of that player's scores.
 # Your output should contain 6 lines, each with one word and one number on it.
 # The first line should be "Ahmed 15". The second line should be "Basia 37"
+awk '{ total = 0; for (i = 2; i <= NF; i++) total += $i; print $1, total }' scores-table.txt
\ No newline at end of file

From cd446fded92a17775643e6a0b65f9742622f0a61 Mon Sep 17 00:00:00 2001
From: Jamal Laqdiem <jlaqdiem@gmail.com>
Date: Mon, 23 Mar 2026 11:39:06 +0000
Subject: [PATCH 17/17] fix: addressed the reviewer questions.

---
 individual-shell-tools/awk/script-01.sh         | 2 +-
 individual-shell-tools/awk/script-02.sh         | 2 +-
 individual-shell-tools/awk/script-03.sh         | 2 +-
 individual-shell-tools/awk/script-04.sh         | 2 +-
 individual-shell-tools/awk/script-05.sh         | 2 +-
 individual-shell-tools/awk/script-06-stretch.sh | 2 +-
 individual-shell-tools/awk/script-07-stretch.sh | 2 +-
 individual-shell-tools/cat/script-01.sh         | 2 +-
 individual-shell-tools/cat/script-02.sh         | 2 +-
 individual-shell-tools/cat/script-04-stretch.sh | 2 +-
 individual-shell-tools/grep/script-01.sh        | 2 +-
 individual-shell-tools/grep/script-02.sh        | 2 +-
 individual-shell-tools/grep/script-03.sh        | 2 +-
 individual-shell-tools/grep/script-04.sh        | 2 +-
 individual-shell-tools/grep/script-05.sh        | 2 +-
 individual-shell-tools/grep/script-06.sh        | 2 +-
 individual-shell-tools/grep/script-07.sh        | 2 +-
 individual-shell-tools/ls/script-01.sh          | 2 +-
 individual-shell-tools/ls/script-02.sh          | 2 +-
 individual-shell-tools/ls/script-03.sh          | 2 +-
 individual-shell-tools/ls/script-04.sh          | 4 ++--
 individual-shell-tools/sed/script-01.sh         | 2 +-
 individual-shell-tools/sed/script-02.sh         | 2 +-
 individual-shell-tools/sed/script-03.sh         | 2 +-
 individual-shell-tools/sed/script-04.sh         | 2 +-
 individual-shell-tools/sed/script-05.sh         | 2 +-
 individual-shell-tools/sed/script-06.sh         | 2 +-
 individual-shell-tools/wc/script-01.sh          | 2 +-
 individual-shell-tools/wc/script-02.sh          | 2 +-
 individual-shell-tools/wc/script-03.sh          | 2 +-
 30 files changed, 31 insertions(+), 31 deletions(-)

diff --git a/individual-shell-tools/awk/script-01.sh b/individual-shell-tools/awk/script-01.sh
index 824e4c58b..90e2397d6 100755
--- a/individual-shell-tools/awk/script-01.sh
+++ b/individual-shell-tools/awk/script-01.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output just the names of each player in `scores-table.txt`.
 # Your output should contain 6 lines, each with just one word on it.
-awk '{print $1}' scores-table.txt
\ No newline at end of file
+awk '{print $1}' scores-table.txt
diff --git a/individual-shell-tools/awk/script-02.sh b/individual-shell-tools/awk/script-02.sh
index 5559ca2fb..da34660ab 100755
--- a/individual-shell-tools/awk/script-02.sh
+++ b/individual-shell-tools/awk/script-02.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the names of each player, as well as their city.
 # Your output should contain 6 lines, each with two words on it, separated by a space.
-awk '{print $1, $2}' scores-table.txt
\ No newline at end of file
+awk '{print $1, $2}' scores-table.txt
diff --git a/individual-shell-tools/awk/script-03.sh b/individual-shell-tools/awk/script-03.sh
index 87c511f6e..55c51c48e 100755
--- a/individual-shell-tools/awk/script-03.sh
+++ b/individual-shell-tools/awk/script-03.sh
@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player along with the score from their first attempt.
 # Your output should contain 6 lines, each with one word and one number on it.
 # The first line should be "Ahmed 1".
-awk '{print $1, $3}' scores-table.txt
\ No newline at end of file
+awk '{print $1, $3}' scores-table.txt
diff --git a/individual-shell-tools/awk/script-04.sh b/individual-shell-tools/awk/script-04.sh
index 23d8eaf7b..e28e54458 100755
--- a/individual-shell-tools/awk/script-04.sh
+++ b/individual-shell-tools/awk/script-04.sh
@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player in London along with the score from their last attempt.
 # Your output should contain 3 lines, each with one word and one number on it.
 # The first line should be "Ahmed 4".
-awk '$2 == "London" {print $1, $NF}' scores-table.txt
\ No newline at end of file
+awk '$2 == "London" {print $1, $NF}' scores-table.txt
diff --git a/individual-shell-tools/awk/script-05.sh b/individual-shell-tools/awk/script-05.sh
index d4826569b..13bd9b3d5 100755
--- a/individual-shell-tools/awk/script-05.sh
+++ b/individual-shell-tools/awk/script-05.sh
@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player along with the number of times they've played the game.
 # Your output should contain 6 lines, each with one word and one number on it.
 # The first line should be "Ahmed 3".
-awk '{print $1, NF - 2}' scores-table.txt
\ No newline at end of file
+awk '{print $1, NF - 2}' scores-table.txt
diff --git a/individual-shell-tools/awk/script-06-stretch.sh b/individual-shell-tools/awk/script-06-stretch.sh
index 6a268bbeb..841f60196 100755
--- a/individual-shell-tools/awk/script-06-stretch.sh
+++ b/individual-shell-tools/awk/script-06-stretch.sh
@@ -6,4 +6,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the total of adding together all players' first scores.
 # Your output should be exactly the number 54.
-awk '{sum += $3} END {print sum}' scores-table.txt
\ No newline at end of file
+awk '{sum += $3} END {print sum}' scores-table.txt
diff --git a/individual-shell-tools/awk/script-07-stretch.sh b/individual-shell-tools/awk/script-07-stretch.sh
index 8da1bedf7..3ce924889 100755
--- a/individual-shell-tools/awk/script-07-stretch.sh
+++ b/individual-shell-tools/awk/script-07-stretch.sh
@@ -7,4 +7,4 @@ set -euo pipefail
 # TODO: Write a command to output just the names of each player along with the total of adding all of that player's scores.
 # Your output should contain 6 lines, each with one word and one number on it.
 # The first line should be "Ahmed 15". The second line should be "Basia 37"
-awk '{ total = 0; for (i = 2; i <= NF; i++) total += $i; print $1, total }' scores-table.txt
\ No newline at end of file
+awk '{ total = 0; for (i = 3; i <= NF; i++) total += $i; print $1, total }' scores-table.txt
diff --git a/individual-shell-tools/cat/script-01.sh b/individual-shell-tools/cat/script-01.sh
index 2f0ac6d4e..edcc54fb4 100755
--- a/individual-shell-tools/cat/script-01.sh
+++ b/individual-shell-tools/cat/script-01.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the contents of the helper-1.txt file inside the helper-files directory to the terminal.
 # The output of this command should be "Once upon a time...".
-cat helper-files/helper-1.txt
\ No newline at end of file
+cat ../helper-files/helper-1.txt
diff --git a/individual-shell-tools/cat/script-02.sh b/individual-shell-tools/cat/script-02.sh
index a85bd6f7b..e96fb4c1b 100755
--- a/individual-shell-tools/cat/script-02.sh
+++ b/individual-shell-tools/cat/script-02.sh
@@ -11,4 +11,4 @@ set -euo pipefail
 # It looked delicious.
 # I was tempted to take a bite of it.
 # But this seemed like a bad idea...
-cat helper-files/helper-1.txt helper-files/helper-2.txt helper-files/helper-3.txt
\ No newline at end of file
+cat helper-files/helper-1.txt helper-files/helper-2.txt helper-files/helper-3.txt
diff --git a/individual-shell-tools/cat/script-04-stretch.sh b/individual-shell-tools/cat/script-04-stretch.sh
index 51f8c23ad..8c22f8df9 100755
--- a/individual-shell-tools/cat/script-04-stretch.sh
+++ b/individual-shell-tools/cat/script-04-stretch.sh
@@ -13,4 +13,4 @@ set -euo pipefail
 # 3 It looked delicious.
 # 4 I was tempted to take a bite of it.
 # 5 But this seemed like a bad idea...
-cat -n helper-files/*
\ No newline at end of file
+cat -n helper-files/*
diff --git a/individual-shell-tools/grep/script-01.sh b/individual-shell-tools/grep/script-01.sh
index 6da55c85a..490a2b86e 100755
--- a/individual-shell-tools/grep/script-01.sh
+++ b/individual-shell-tools/grep/script-01.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt said by the Doctor.
 # The output should contain 6 lines.
-grep '^Doctor:' dialogue.txt 
\ No newline at end of file
+grep '^Doctor:' dialogue.txt 
diff --git a/individual-shell-tools/grep/script-02.sh b/individual-shell-tools/grep/script-02.sh
index 5e2a31132..0b545b410 100755
--- a/individual-shell-tools/grep/script-02.sh
+++ b/individual-shell-tools/grep/script-02.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that contains the word Doctor (regardless of case).
 # The output should contain 9 lines.
-grep -i 'Doctor' dialogue.txt 
\ No newline at end of file
+grep -i 'Doctor' dialogue.txt 
diff --git a/individual-shell-tools/grep/script-03.sh b/individual-shell-tools/grep/script-03.sh
index 5024cb62c..541d05a53 100755
--- a/individual-shell-tools/grep/script-03.sh
+++ b/individual-shell-tools/grep/script-03.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the number of lines in dialogue.txt that contain the word Doctor (regardless of case).
 # The output should be exactly the number 9.
-grep -i "Doctor" dialogue.txt | wc -l
\ No newline at end of file
+grep -i "Doctor" dialogue.txt | wc -l
diff --git a/individual-shell-tools/grep/script-04.sh b/individual-shell-tools/grep/script-04.sh
index 1056907df..e9e8885de 100755
--- a/individual-shell-tools/grep/script-04.sh
+++ b/individual-shell-tools/grep/script-04.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that does not contain the word "Hello" (regardless of case).
 # The output should contain 10 lines.
-grep -vi "hello" dialogue.txt | wc -l
\ No newline at end of file
+grep -vi "hello" dialogue.txt 
diff --git a/individual-shell-tools/grep/script-05.sh b/individual-shell-tools/grep/script-05.sh
index a7e28a473..d4115cec7 100755
--- a/individual-shell-tools/grep/script-05.sh
+++ b/individual-shell-tools/grep/script-05.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output every line in dialogue.txt that contains the string "cure", as well as the line before that line.
 # The output should contain two pairs of two lines of text (with a separator between them).
-grep -B 1 "cure" dialogue.txt
\ No newline at end of file
+grep -B 1 "cure" dialogue.txt
diff --git a/individual-shell-tools/grep/script-06.sh b/individual-shell-tools/grep/script-06.sh
index 0982dceff..44ca5557e 100755
--- a/individual-shell-tools/grep/script-06.sh
+++ b/individual-shell-tools/grep/script-06.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the name of every `.txt` file in this directory which contains a line of dialogue said by the Doctor.
 # The output should contain two filenames.
-grep -l 'Doctor' *.txt
\ No newline at end of file
+grep -l '^Doctor:' *.txt
diff --git a/individual-shell-tools/grep/script-07.sh b/individual-shell-tools/grep/script-07.sh
index 960209981..cd9b5bd6a 100755
--- a/individual-shell-tools/grep/script-07.sh
+++ b/individual-shell-tools/grep/script-07.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output, for each `.txt` file in this directory, how many lines of dialogue the Doctor has.
 # The output should show that dialogue.txt contains 6 lines, dialogue-2.txt contains 2, and dialogue-3.txt contains 0.
-grep -c '^Doctor:' *.txt 
\ No newline at end of file
+grep -c '^Doctor:' *.txt 
diff --git a/individual-shell-tools/ls/script-01.sh b/individual-shell-tools/ls/script-01.sh
index 071d4ba67..08e2ce18e 100755
--- a/individual-shell-tools/ls/script-01.sh
+++ b/individual-shell-tools/ls/script-01.sh
@@ -13,4 +13,4 @@ fi
 
 # TODO: Write a command to list the files and folders in this directory.
 # The output should be a list of names including child-directory, script-01.sh, script-02.sh, and more.
-ls -1
\ No newline at end of file
+ls -1
diff --git a/individual-shell-tools/ls/script-02.sh b/individual-shell-tools/ls/script-02.sh
index 758b7b1e1..e37bad14c 100755
--- a/individual-shell-tools/ls/script-02.sh
+++ b/individual-shell-tools/ls/script-02.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command which lists all of the files in the directory named child-directory.
 # The output should be a list of names: helper-1.txt, helper-2.txt, helper-3.txt.
-ls -1 ./child-directory
\ No newline at end of file
+ls -1 ./child-directory
diff --git a/individual-shell-tools/ls/script-03.sh b/individual-shell-tools/ls/script-03.sh
index 89898a5b2..36d5c67e1 100755
--- a/individual-shell-tools/ls/script-03.sh
+++ b/individual-shell-tools/ls/script-03.sh
@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command which _recursively_ lists all of the files and folders in this directory _and_ all of the files inside those folders.
 # The output should be a list of names including: child-directory, script-01.sh, helper-1.txt (and more).
 # The formatting of the output doesn't matter.
-ls -R -1
\ No newline at end of file
+ls -R -1
diff --git a/individual-shell-tools/ls/script-04.sh b/individual-shell-tools/ls/script-04.sh
index 0c3d42d41..0345bb121 100755
--- a/individual-shell-tools/ls/script-04.sh
+++ b/individual-shell-tools/ls/script-04.sh
@@ -15,11 +15,11 @@ echo "First exercise (sorted newest to oldest):"
 
 # TODO: Write a command which lists the files in the child-directory directory, one per line, sorted so that the most recently modified file is first.
 # The output should be a list of names in this order, one per line: helper-3.txt, helper-1.txt, helper-2.txt.
-ls -1t -1 ./child-directory
+ls -1t ./child-directory
 
 echo "Second exercise (sorted oldest to newest):"
 
 # TODO: Write a command which does the same as above, but sorted in the opposite order (oldest first).
 # The output should be a list of names in this order, one per line: helper-2.txt, helper-1.txt, helper-3.txt.
 
-ls -1tr  ./child-directory
\ No newline at end of file
+ls -1tr  ./child-directory
diff --git a/individual-shell-tools/sed/script-01.sh b/individual-shell-tools/sed/script-01.sh
index 57faad5ba..48ea0a0ec 100755
--- a/individual-shell-tools/sed/script-01.sh
+++ b/individual-shell-tools/sed/script-01.sh
@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output input.txt with all occurrences of the letter `i` replaced with `I`.
 # The output should contain 11 lines.
 # The first line of the output should be: "ThIs Is a sample fIle for experImentIng with sed.".
-sed 's/i/I/g' input.txt
\ No newline at end of file
+sed 's/i/I/g' input.txt
diff --git a/individual-shell-tools/sed/script-02.sh b/individual-shell-tools/sed/script-02.sh
index d3f70b8ce..be485a0af 100755
--- a/individual-shell-tools/sed/script-02.sh
+++ b/individual-shell-tools/sed/script-02.sh
@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output input.txt with numbers removed.
 # The output should contain 11 lines.
 # Line 6 of the output should be " Alisha".
-sed 's/[0-9]//g' input.txt
\ No newline at end of file
+sed 's/[0-9]//g' input.txt
diff --git a/individual-shell-tools/sed/script-03.sh b/individual-shell-tools/sed/script-03.sh
index 07cb6a27c..1455db92c 100755
--- a/individual-shell-tools/sed/script-03.sh
+++ b/individual-shell-tools/sed/script-03.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output input.txt removing any line which contains a number.
 # The output should contain 6 lines.
-sed  '/[0-9]/d' input.txt
\ No newline at end of file
+sed  '/[0-9]/d' input.txt
diff --git a/individual-shell-tools/sed/script-04.sh b/individual-shell-tools/sed/script-04.sh
index ae19f6735..8ac6e7c5d 100755
--- a/individual-shell-tools/sed/script-04.sh
+++ b/individual-shell-tools/sed/script-04.sh
@@ -5,4 +5,4 @@ set -euo pipefail
 # TODO: Write a command to output input.txt replacing every occurrence of the string "We'll" with "We will".
 # The output should contain 11 lines.
 
-sed "s/We'll/We will/g" input.txt
\ No newline at end of file
+sed "s/We'll/We will/g" input.txt
diff --git a/individual-shell-tools/sed/script-05.sh b/individual-shell-tools/sed/script-05.sh
index 6f1b7cba0..68582b6b8 100755
--- a/individual-shell-tools/sed/script-05.sh
+++ b/individual-shell-tools/sed/script-05.sh
@@ -6,4 +6,4 @@ set -euo pipefail
 # If a line starts with a number and a space, make the line instead end with a space and the number.
 # So line 6 which currently reads "37 Alisha" should instead read "Alisha 37".
 # The output should contain 11 lines.
-sed -E 's/^([0-9]+) (.*)/\2 \1/' input.txt
\ No newline at end of file
+sed -E 's/^([0-9]+) (.*)/\2 \1/' input.txt
diff --git a/individual-shell-tools/sed/script-06.sh b/individual-shell-tools/sed/script-06.sh
index 83a2adf02..c5eed9037 100755
--- a/individual-shell-tools/sed/script-06.sh
+++ b/individual-shell-tools/sed/script-06.sh
@@ -8,4 +8,4 @@ set -euo pipefail
 # The output should contain 11 lines.
 # Line 3 should be "It contains many lines, and there are some things you may want to do with each of them.".
 # Line 11 should be "We also should remember, when we go shopping, to get 4 items: oranges, cheese, bread, olives.".
-sed -E 's/,([^ ])/, \1/g' input.txt
\ No newline at end of file
+sed -E 's/,([^ ])/, \1/g' input.txt
diff --git a/individual-shell-tools/wc/script-01.sh b/individual-shell-tools/wc/script-01.sh
index 17d35ef66..caa5a487b 100755
--- a/individual-shell-tools/wc/script-01.sh
+++ b/individual-shell-tools/wc/script-01.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the number of words in the file helper-files/helper-3.txt.
 # The output should include the number 19. The output should not include the number 92.
-wc  -w helper-files/helper-3.txt    
\ No newline at end of file
+wc  -w helper-files/helper-3.txt    
diff --git a/individual-shell-tools/wc/script-02.sh b/individual-shell-tools/wc/script-02.sh
index cdd372b18..095e380ab 100755
--- a/individual-shell-tools/wc/script-02.sh
+++ b/individual-shell-tools/wc/script-02.sh
@@ -4,4 +4,4 @@ set -euo pipefail
 
 # TODO: Write a command to output the number of lines in the file helper-files/helper-3.txt.
 # The output should include the number 3. The output should not include the number 19.
-wc -l helper-files/helper-3.txt
\ No newline at end of file
+wc -l helper-files/helper-3.txt
diff --git a/individual-shell-tools/wc/script-03.sh b/individual-shell-tools/wc/script-03.sh
index 5fa01db1e..aa42fb8ab 100755
--- a/individual-shell-tools/wc/script-03.sh
+++ b/individual-shell-tools/wc/script-03.sh
@@ -9,4 +9,4 @@ set -euo pipefail
 #        3      19      92 ../helper-files/helper-3.txt
 #        5      30     151 total
 
-wc helper-files/*
\ No newline at end of file
+wc helper-files/*