From 799065aea45ab09eb3353a4087110fcf70e924d5 Mon Sep 17 00:00:00 2001 From: Geraldine-Edwards Date: Thu, 13 Nov 2025 14:18:15 +0000 Subject: [PATCH 1/3] Add commands to scripts for filtering and counting files with upper case letters in 'ls-grep' exercises --- shell-pipelines/ls-grep/script-01.sh | 1 + shell-pipelines/ls-grep/script-02.sh | 1 + shell-pipelines/ls-grep/script-03.sh | 1 + shell-pipelines/ls-grep/script-04.sh | 1 + 4 files changed, 4 insertions(+) diff --git a/shell-pipelines/ls-grep/script-01.sh b/shell-pipelines/ls-grep/script-01.sh index 8c7d968a2..486469ee9 100755 --- a/shell-pipelines/ls-grep/script-01.sh +++ b/shell-pipelines/ls-grep/script-01.sh @@ -4,3 +4,4 @@ set -euo pipefail # TODO: Write a command to output the names of the files in the sample-files directory whose name contains at least one upper case letter. # Your output should contain 11 files. +ls ./sample-files | grep '[A-Z]' \ No newline at end of file diff --git a/shell-pipelines/ls-grep/script-02.sh b/shell-pipelines/ls-grep/script-02.sh index 16f5f71d9..28fe95c9c 100755 --- a/shell-pipelines/ls-grep/script-02.sh +++ b/shell-pipelines/ls-grep/script-02.sh @@ -4,3 +4,4 @@ set -euo pipefail # TODO: Write a command to output the names of the files in the sample-files directory whose name starts with an upper case letter. # Your output should contain 10 files. +ls ./sample-files | grep '^[A-Z]' \ No newline at end of file diff --git a/shell-pipelines/ls-grep/script-03.sh b/shell-pipelines/ls-grep/script-03.sh index a302ab036..77e2b8da9 100755 --- a/shell-pipelines/ls-grep/script-03.sh +++ b/shell-pipelines/ls-grep/script-03.sh @@ -4,3 +4,4 @@ set -euo pipefail # TODO: Write a command to output the names of the files in the sample-files directory whose name starts with an upper case letter and doesn't contain any other upper case letters. # Your output should contain 7 files. +ls ./sample-files | grep '^[A-Z][^A-Z]*$' \ No newline at end of file diff --git a/shell-pipelines/ls-grep/script-04.sh b/shell-pipelines/ls-grep/script-04.sh index c000b7e3b..2e1d87a79 100755 --- a/shell-pipelines/ls-grep/script-04.sh +++ b/shell-pipelines/ls-grep/script-04.sh @@ -4,3 +4,4 @@ set -euo pipefail # TODO: Write a command to count the number of files in the sample-files directory whose name starts with an upper case letter and doesn't contain any other upper case letters. # Your output should be the number 7. +ls ./sample-files | grep '^[A-Z][^A-Z]*$' -c \ No newline at end of file From 5094648f9c7fae761b9fcb887e89c73766e645b8 Mon Sep 17 00:00:00 2001 From: Geraldine-Edwards Date: Thu, 13 Nov 2025 15:14:14 +0000 Subject: [PATCH 2/3] Add sorting and counting commands to scripts for processing scores and events in "sort-uniq-head-tail" exercises --- shell-pipelines/sort-uniq-head-tail/script-01.sh | 1 + shell-pipelines/sort-uniq-head-tail/script-02.sh | 1 + shell-pipelines/sort-uniq-head-tail/script-03.sh | 1 + shell-pipelines/sort-uniq-head-tail/script-04.sh | 2 ++ shell-pipelines/sort-uniq-head-tail/script-05.sh | 1 + shell-pipelines/sort-uniq-head-tail/script-06.sh | 1 + shell-pipelines/sort-uniq-head-tail/script-07.sh | 1 + 7 files changed, 8 insertions(+) diff --git a/shell-pipelines/sort-uniq-head-tail/script-01.sh b/shell-pipelines/sort-uniq-head-tail/script-01.sh index 171e1f989..b27524eaf 100755 --- a/shell-pipelines/sort-uniq-head-tail/script-01.sh +++ b/shell-pipelines/sort-uniq-head-tail/script-01.sh @@ -5,3 +5,4 @@ set -euo pipefail # The input for this script is the scores-table.txt file. # TODO: Write a command to output scores-table.txt, with lines sorted by the person's name. # The first line of your output should be "Ahmed London 1 10 4" (with no quotes). And the third line should be "Chandra Birmingham 12 6". +sort scores-table.txt \ No newline at end of file diff --git a/shell-pipelines/sort-uniq-head-tail/script-02.sh b/shell-pipelines/sort-uniq-head-tail/script-02.sh index 29c3c2524..b01bbf6d8 100755 --- a/shell-pipelines/sort-uniq-head-tail/script-02.sh +++ b/shell-pipelines/sort-uniq-head-tail/script-02.sh @@ -5,3 +5,4 @@ set -euo pipefail # The input for this script is the scores-table.txt file. # TODO: Write a command to output scores-table.txt, with lines sorted by the person's first score, descending. # The first line of your output should be "Basia London 22 9 6" (with no quotes). +sort -k3 -n -r scores-table.txt \ No newline at end of file diff --git a/shell-pipelines/sort-uniq-head-tail/script-03.sh b/shell-pipelines/sort-uniq-head-tail/script-03.sh index bcbaf3420..87b3c17b3 100755 --- a/shell-pipelines/sort-uniq-head-tail/script-03.sh +++ b/shell-pipelines/sort-uniq-head-tail/script-03.sh @@ -8,3 +8,4 @@ set -euo pipefail # Basia London 22 9 6 # Piotr Glasgow 15 2 25 11 8 # Chandra Birmingham 12 6 +sort -k3 -n -r scores-table.txt | head -n3 \ No newline at end of file diff --git a/shell-pipelines/sort-uniq-head-tail/script-04.sh b/shell-pipelines/sort-uniq-head-tail/script-04.sh index 65a5cfba8..67cbc2b1a 100755 --- a/shell-pipelines/sort-uniq-head-tail/script-04.sh +++ b/shell-pipelines/sort-uniq-head-tail/script-04.sh @@ -5,3 +5,5 @@ set -euo pipefail # The input for this script is the scores-table.txt file. # TODO: Write a command to output scores-table.txt, with shows the line for the player whose first score was the second highest. # Your output should be: "Piotr Glasgow 15 2 25 11 8" (without quotes). + +sort -k3 -n -r scores-table.txt | head -n+2 | tail -n1 \ No newline at end of file diff --git a/shell-pipelines/sort-uniq-head-tail/script-05.sh b/shell-pipelines/sort-uniq-head-tail/script-05.sh index a93cd9f9d..bdc16e1c8 100755 --- a/shell-pipelines/sort-uniq-head-tail/script-05.sh +++ b/shell-pipelines/sort-uniq-head-tail/script-05.sh @@ -6,3 +6,4 @@ set -euo pipefail # TODO: Write a command to show a list of all events that have happened, without duplication. # The order they're displayed doesn't matter, but we never want to see the same event listed twice. # Your output should contain 6 lines. +sort events.txt | uniq \ No newline at end of file diff --git a/shell-pipelines/sort-uniq-head-tail/script-06.sh b/shell-pipelines/sort-uniq-head-tail/script-06.sh index 715c7ae5c..e2fc1be4a 100755 --- a/shell-pipelines/sort-uniq-head-tail/script-06.sh +++ b/shell-pipelines/sort-uniq-head-tail/script-06.sh @@ -5,3 +5,4 @@ set -euo pipefail # The input for this script is the events.txt file. # TODO: Write a command to show how many times anyone has entered and exited. # It should be clear from your script's output that there have been 5 Entry events and 4 Exit events. +awk '{print $1}' events.txt | sort | uniq -c diff --git a/shell-pipelines/sort-uniq-head-tail/script-07.sh b/shell-pipelines/sort-uniq-head-tail/script-07.sh index 7fd07e1ff..a040b0c9c 100755 --- a/shell-pipelines/sort-uniq-head-tail/script-07.sh +++ b/shell-pipelines/sort-uniq-head-tail/script-07.sh @@ -6,3 +6,4 @@ set -euo pipefail # TODO: Write a command to show how many times anyone has entered and exited. # It should be clear from your script's output that there have been 5 Entry events and 4 Exit events. # The word "Event" should not appear in your script's output. +tail -n +2 events-with-timestamps.txt | awk '{print $3}' | sort | uniq -c From 2aa24b31156aac356114d7c9b30a292e6ed524cd Mon Sep 17 00:00:00 2001 From: Geraldine-Edwards Date: Thu, 13 Nov 2025 15:28:48 +0000 Subject: [PATCH 3/3] Add commands to scripts for replacing exclamation marks and swapping Y/Z characters in text files for "tr" exercises --- shell-pipelines/tr/script-01.sh | 1 + shell-pipelines/tr/script-02.sh | 1 + 2 files changed, 2 insertions(+) diff --git a/shell-pipelines/tr/script-01.sh b/shell-pipelines/tr/script-01.sh index 8bb0211e9..3553c5aa5 100755 --- a/shell-pipelines/tr/script-01.sh +++ b/shell-pipelines/tr/script-01.sh @@ -6,3 +6,4 @@ set -euo pipefail # The author got feedback that they're using too many exclamation marks (!). # # TODO: Write a command to output the contents of text.txt with every exclamation mark (!) replaced with a full-stop (.). +tr '!' '.' < text.txt \ No newline at end of file diff --git a/shell-pipelines/tr/script-02.sh b/shell-pipelines/tr/script-02.sh index cf3a503a2..a5250f788 100755 --- a/shell-pipelines/tr/script-02.sh +++ b/shell-pipelines/tr/script-02.sh @@ -7,3 +7,4 @@ set -euo pipefail # so every Y should be a Z, and every Z should be a Y! # # TODO: Write a command to output the contents of text.txt with every Y and Z swapped (both upper and lower case). +tr 'YyZz' 'ZzYy' < text.txt \ No newline at end of file