From ddee83163fcbc740d66be2e5af11c1662ae3507c Mon Sep 17 00:00:00 2001 From: ike-agu Date: Thu, 20 Nov 2025 02:16:31 +0000 Subject: [PATCH 1/6] Add ls command flags to list files as required in exercise --- individual-shell-tools/ls/script-01.sh | 1 + individual-shell-tools/ls/script-02.sh | 1 + individual-shell-tools/ls/script-03.sh | 1 + individual-shell-tools/ls/script-04.sh | 2 ++ 4 files changed, 5 insertions(+) diff --git a/individual-shell-tools/ls/script-01.sh b/individual-shell-tools/ls/script-01.sh index 241b62f5e..044af3619 100755 --- a/individual-shell-tools/ls/script-01.sh +++ b/individual-shell-tools/ls/script-01.sh @@ -12,4 +12,5 @@ if [[ "${script_dir}" != "$(pwd)" ]]; then fi # TODO: Write a command to list the files and folders in this directory. +ls # The output should be a list of names including child-directory, script-01.sh, script-02.sh, and more. diff --git a/individual-shell-tools/ls/script-02.sh b/individual-shell-tools/ls/script-02.sh index d0a5a10f4..33e4b10bc 100755 --- a/individual-shell-tools/ls/script-02.sh +++ b/individual-shell-tools/ls/script-02.sh @@ -3,4 +3,5 @@ set -euo pipefail # TODO: Write a command which lists all of the files in the directory named child-directory. +ls child-directory # The output should be a list of names: helper-1.txt, helper-2.txt, helper-3.txt. diff --git a/individual-shell-tools/ls/script-03.sh b/individual-shell-tools/ls/script-03.sh index 781216d21..0dc1c2f8a 100755 --- a/individual-shell-tools/ls/script-03.sh +++ b/individual-shell-tools/ls/script-03.sh @@ -3,5 +3,6 @@ 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. +ls -R # 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. diff --git a/individual-shell-tools/ls/script-04.sh b/individual-shell-tools/ls/script-04.sh index 72f3817b3..fe08af646 100755 --- a/individual-shell-tools/ls/script-04.sh +++ b/individual-shell-tools/ls/script-04.sh @@ -16,8 +16,10 @@ 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 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 From e26a2d20f35f9f5ca23f2bcac160954b9cd9e096 Mon Sep 17 00:00:00 2001 From: ike-agu Date: Thu, 20 Nov 2025 12:54:02 +0000 Subject: [PATCH 2/6] Add cat commands to output file contents as required in exercise --- individual-shell-tools/cat/script-01.sh | 2 ++ individual-shell-tools/cat/script-02.sh | 2 ++ individual-shell-tools/cat/script-03.sh | 2 ++ individual-shell-tools/cat/script-04-stretch.sh | 4 ++++ 4 files changed, 10 insertions(+) diff --git a/individual-shell-tools/cat/script-01.sh b/individual-shell-tools/cat/script-01.sh index c85053e0f..afd7ba670 100755 --- a/individual-shell-tools/cat/script-01.sh +++ b/individual-shell-tools/cat/script-01.sh @@ -4,3 +4,5 @@ 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 diff --git a/individual-shell-tools/cat/script-02.sh b/individual-shell-tools/cat/script-02.sh index 01bbd5eab..4e497963b 100755 --- a/individual-shell-tools/cat/script-02.sh +++ b/individual-shell-tools/cat/script-02.sh @@ -11,3 +11,5 @@ 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/*.txt diff --git a/individual-shell-tools/cat/script-03.sh b/individual-shell-tools/cat/script-03.sh index 37573b0c1..e77f981a9 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 diff --git a/individual-shell-tools/cat/script-04-stretch.sh b/individual-shell-tools/cat/script-04-stretch.sh index 00fe3c48b..ec540c779 100755 --- a/individual-shell-tools/cat/script-04-stretch.sh +++ b/individual-shell-tools/cat/script-04-stretch.sh @@ -13,3 +13,7 @@ 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/*.txt +cat ../helper-files/*.txt | cat -n + From 11ab5ee31e1d876eb96be0032e0589c15c5573d3 Mon Sep 17 00:00:00 2001 From: ike-agu Date: Thu, 20 Nov 2025 13:14:19 +0000 Subject: [PATCH 3/6] Use wc command to count words, lines and characters --- individual-shell-tools/wc/script-01.sh | 2 ++ individual-shell-tools/wc/script-02.sh | 2 ++ individual-shell-tools/wc/script-03.sh | 3 +++ 3 files changed, 7 insertions(+) diff --git a/individual-shell-tools/wc/script-01.sh b/individual-shell-tools/wc/script-01.sh index c9dd6e5df..826c43401 100755 --- a/individual-shell-tools/wc/script-01.sh +++ b/individual-shell-tools/wc/script-01.sh @@ -4,3 +4,5 @@ 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 diff --git a/individual-shell-tools/wc/script-02.sh b/individual-shell-tools/wc/script-02.sh index 8feeb1a62..ae2ae870b 100755 --- a/individual-shell-tools/wc/script-02.sh +++ b/individual-shell-tools/wc/script-02.sh @@ -4,3 +4,5 @@ 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 diff --git a/individual-shell-tools/wc/script-03.sh b/individual-shell-tools/wc/script-03.sh index 6b2e9d3d1..0e1df66da 100755 --- a/individual-shell-tools/wc/script-03.sh +++ b/individual-shell-tools/wc/script-03.sh @@ -8,3 +8,6 @@ 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/*.txt From c724ba8f5395a46d0dd804c0500760fe65fad471 Mon Sep 17 00:00:00 2001 From: ike-agu Date: Thu, 20 Nov 2025 14:09:18 +0000 Subject: [PATCH 4/6] Add grep command to count Doctor lines across dialogue the files --- individual-shell-tools/grep/script-01.sh | 2 ++ individual-shell-tools/grep/script-02.sh | 1 + 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 | 1 + individual-shell-tools/grep/script-07.sh | 2 ++ 7 files changed, 12 insertions(+) diff --git a/individual-shell-tools/grep/script-01.sh b/individual-shell-tools/grep/script-01.sh index fb05f42f2..677186f9b 100755 --- a/individual-shell-tools/grep/script-01.sh +++ b/individual-shell-tools/grep/script-01.sh @@ -4,3 +4,5 @@ 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 diff --git a/individual-shell-tools/grep/script-02.sh b/individual-shell-tools/grep/script-02.sh index df6f85640..53a4d54db 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' dialogue.txt diff --git a/individual-shell-tools/grep/script-03.sh b/individual-shell-tools/grep/script-03.sh index 5383fe578..5da87ecce 100755 --- a/individual-shell-tools/grep/script-03.sh +++ b/individual-shell-tools/grep/script-03.sh @@ -4,3 +4,5 @@ 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 -c 'Doctor' dialogue.txt diff --git a/individual-shell-tools/grep/script-04.sh b/individual-shell-tools/grep/script-04.sh index 80ee04776..455202330 100755 --- a/individual-shell-tools/grep/script-04.sh +++ b/individual-shell-tools/grep/script-04.sh @@ -4,3 +4,5 @@ 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 -v 'Hello' dialogue.txt diff --git a/individual-shell-tools/grep/script-05.sh b/individual-shell-tools/grep/script-05.sh index 1eb538185..2fc6a87fe 100755 --- a/individual-shell-tools/grep/script-05.sh +++ b/individual-shell-tools/grep/script-05.sh @@ -4,3 +4,5 @@ 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 diff --git a/individual-shell-tools/grep/script-06.sh b/individual-shell-tools/grep/script-06.sh index 5670e3b6c..919e0122a 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 diff --git a/individual-shell-tools/grep/script-07.sh b/individual-shell-tools/grep/script-07.sh index 9670ebad9..d6b49bbdc 100755 --- a/individual-shell-tools/grep/script-07.sh +++ b/individual-shell-tools/grep/script-07.sh @@ -4,3 +4,5 @@ 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 From b539ee460a0f535fec00efc5fc9cae9bc385debb Mon Sep 17 00:00:00 2001 From: ike-agu Date: Thu, 20 Nov 2025 16:48:53 +0000 Subject: [PATCH 5/6] Use sed commands replace, insert and modify text in the input.txt --- individual-shell-tools/sed/script-01.sh | 2 ++ individual-shell-tools/sed/script-02.sh | 2 ++ individual-shell-tools/sed/script-03.sh | 1 + individual-shell-tools/sed/script-04.sh | 2 ++ individual-shell-tools/sed/script-05.sh | 3 +++ individual-shell-tools/sed/script-06.sh | 2 ++ 6 files changed, 12 insertions(+) diff --git a/individual-shell-tools/sed/script-01.sh b/individual-shell-tools/sed/script-01.sh index 3eba6fa4d..341830b55 100755 --- a/individual-shell-tools/sed/script-01.sh +++ b/individual-shell-tools/sed/script-01.sh @@ -5,3 +5,5 @@ 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 diff --git a/individual-shell-tools/sed/script-02.sh b/individual-shell-tools/sed/script-02.sh index abdd64d06..8ce58a2d9 100755 --- a/individual-shell-tools/sed/script-02.sh +++ b/individual-shell-tools/sed/script-02.sh @@ -5,3 +5,5 @@ 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 diff --git a/individual-shell-tools/sed/script-03.sh b/individual-shell-tools/sed/script-03.sh index dd284a296..bd9e17437 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 diff --git a/individual-shell-tools/sed/script-04.sh b/individual-shell-tools/sed/script-04.sh index 0052ac6c4..6b8cae381 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 diff --git a/individual-shell-tools/sed/script-05.sh b/individual-shell-tools/sed/script-05.sh index 2dcc91a0c..3e85e0ab4 100755 --- a/individual-shell-tools/sed/script-05.sh +++ b/individual-shell-tools/sed/script-05.sh @@ -6,3 +6,6 @@ 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 's/^\([0-9][0-9]*\) \(.*\)$/\2 \1/' input.txt + diff --git a/individual-shell-tools/sed/script-06.sh b/individual-shell-tools/sed/script-06.sh index 0b9390170..17ea86f45 100755 --- a/individual-shell-tools/sed/script-06.sh +++ b/individual-shell-tools/sed/script-06.sh @@ -8,3 +8,5 @@ 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 's/,\([^ ]\)/, \1/g' input.txt From e31bdc6e9d294c37a42b1bf50c036040bacfe17e Mon Sep 17 00:00:00 2001 From: ike-agu Date: Thu, 20 Nov 2025 17:51:28 +0000 Subject: [PATCH 6/6] Use awk commands to print names and scores; sum the total scores --- individual-shell-tools/awk/script-01.sh | 2 ++ individual-shell-tools/awk/script-02.sh | 1 + individual-shell-tools/awk/script-03.sh | 1 + 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 ++ 7 files changed, 12 insertions(+) diff --git a/individual-shell-tools/awk/script-01.sh b/individual-shell-tools/awk/script-01.sh index 8db4390af..e7a0b71ff 100755 --- a/individual-shell-tools/awk/script-01.sh +++ b/individual-shell-tools/awk/script-01.sh @@ -4,3 +4,5 @@ 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 diff --git a/individual-shell-tools/awk/script-02.sh b/individual-shell-tools/awk/script-02.sh index 5956be9bd..f7607700c 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 diff --git a/individual-shell-tools/awk/script-03.sh b/individual-shell-tools/awk/script-03.sh index af7c6e8b9..0d5dc87ca 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 diff --git a/individual-shell-tools/awk/script-04.sh b/individual-shell-tools/awk/script-04.sh index bf15703c7..4e54427fd 100755 --- a/individual-shell-tools/awk/script-04.sh +++ b/individual-shell-tools/awk/script-04.sh @@ -5,3 +5,5 @@ 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 diff --git a/individual-shell-tools/awk/script-05.sh b/individual-shell-tools/awk/script-05.sh index d1680cb02..844357398 100755 --- a/individual-shell-tools/awk/script-05.sh +++ b/individual-shell-tools/awk/script-05.sh @@ -5,3 +5,5 @@ 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 diff --git a/individual-shell-tools/awk/script-06-stretch.sh b/individual-shell-tools/awk/script-06-stretch.sh index 0201e6378..8b59e0488 100755 --- a/individual-shell-tools/awk/script-06-stretch.sh +++ b/individual-shell-tools/awk/script-06-stretch.sh @@ -6,3 +6,5 @@ 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 diff --git a/individual-shell-tools/awk/script-07-stretch.sh b/individual-shell-tools/awk/script-07-stretch.sh index 3f7155880..4425a195b 100755 --- a/individual-shell-tools/awk/script-07-stretch.sh +++ b/individual-shell-tools/awk/script-07-stretch.sh @@ -7,3 +7,5 @@ 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 '{sum = 0; for (i = 3; i <= NF; i++) sum += $i; print $1, sum}' scores-table.txt