From 0b17a9b183300bb3403a386526442f92adeaae2c Mon Sep 17 00:00:00 2001
From: JanefrancessC <janefrancesschioma@gmail.com>
Date: Thu, 19 Mar 2026 10:53:52 +0000
Subject: [PATCH 1/6] ls-grep done

---
 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..5ddf6c363 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..dbd1c809f 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..ba5704492 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 -c '^[A-Z][^A-Z]*$'
\ No newline at end of file

From c517c14dab29acd6e690611fe865ec8eac065fe1 Mon Sep 17 00:00:00 2001
From: JanefrancessC <janefrancesschioma@gmail.com>
Date: Thu, 19 Mar 2026 18:39:18 +0000
Subject: [PATCH 2/6] sort-uniq-head-tail done

---
 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 | 2 ++
 shell-pipelines/sort-uniq-head-tail/script-04.sh | 1 +
 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..d14a741aa 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..1bb8f8d3a 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 -nr ./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..1abef0045 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-03.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-03.sh
@@ -8,3 +8,5 @@ set -euo pipefail
 # Basia London 22 9 6
 # Piotr Glasgow 15 2 25 11 8
 # Chandra Birmingham 12 6
+sort -k3 -n ./scores-table.txt | tail -r -n3
+# sort -k3 -nr ./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..d661cf417 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-04.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-04.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 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 -nr ./scores-table.txt | head -n2 | tail -n1
diff --git a/shell-pipelines/sort-uniq-head-tail/script-05.sh b/shell-pipelines/sort-uniq-head-tail/script-05.sh
index a93cd9f9d..f35b162c7 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 -u ./events.txt
\ 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..12a816259 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
\ No newline at end of file
diff --git a/shell-pipelines/sort-uniq-head-tail/script-07.sh b/shell-pipelines/sort-uniq-head-tail/script-07.sh
index 7fd07e1ff..fbe1a6c79 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.
+grep -o 'Entry\|Exit' ./events-with-timestamps.txt | sort | uniq -c
\ No newline at end of file

From 2bd7c0579a14de1080e93a9b320e0e19f9fe0baf Mon Sep 17 00:00:00 2001
From: JanefrancessC <janefrancesschioma@gmail.com>
Date: Thu, 19 Mar 2026 19:19:05 +0000
Subject: [PATCH 3/6] tr done

---
 shell-pipelines/tr/script-01.sh | 2 ++
 shell-pipelines/tr/script-02.sh | 1 +
 2 files changed, 3 insertions(+)

diff --git a/shell-pipelines/tr/script-01.sh b/shell-pipelines/tr/script-01.sh
index 8bb0211e9..5b5f40eb0 100755
--- a/shell-pipelines/tr/script-01.sh
+++ b/shell-pipelines/tr/script-01.sh
@@ -6,3 +6,5 @@ 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 (.).
+# cat ./text.txt | tr '!' '.'
+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..6fa21555b 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

From 7814407ed35ce28029062c645586127923da6197 Mon Sep 17 00:00:00 2001
From: JanefrancessC <janefrancesschioma@gmail.com>
Date: Fri, 15 May 2026 15:27:25 +0100
Subject: [PATCH 4/6] chore: add editorconfig

---
 .editorconfig | 6 ++++++
 1 file changed, 6 insertions(+)
 create mode 100644 .editorconfig

diff --git a/.editorconfig b/.editorconfig
new file mode 100644
index 000000000..e62b82865
--- /dev/null
+++ b/.editorconfig
@@ -0,0 +1,6 @@
+root = true
+
+[*]
+end_of_line = lf
+insert_final_newline = true
+charset = utf-8

From a33d461af0ecc56d92ebf04090dd833d3f8efc59 Mon Sep 17 00:00:00 2001
From: JanefrancessC <janefrancesschioma@gmail.com>
Date: Fri, 15 May 2026 16:10:32 +0100
Subject: [PATCH 5/6] fix: address PR review - add trailing newlines, fix -k3
 to -k3,3, add editorconfig

---
 shell-pipelines/ls-grep/script-01.sh | 2 +-
 shell-pipelines/ls-grep/script-02.sh | 2 +-
 shell-pipelines/ls-grep/script-03.sh | 2 +-
 shell-pipelines/ls-grep/script-04.sh | 2 +-
 4 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/shell-pipelines/ls-grep/script-01.sh b/shell-pipelines/ls-grep/script-01.sh
index 5ddf6c363..92e10d14b 100755
--- a/shell-pipelines/ls-grep/script-01.sh
+++ b/shell-pipelines/ls-grep/script-01.sh
@@ -4,4 +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
+ls ./sample-files/ | grep '[A-Z]'
diff --git a/shell-pipelines/ls-grep/script-02.sh b/shell-pipelines/ls-grep/script-02.sh
index 28fe95c9c..644879434 100755
--- a/shell-pipelines/ls-grep/script-02.sh
+++ b/shell-pipelines/ls-grep/script-02.sh
@@ -4,4 +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
+ls ./sample-files | grep '^[A-Z]'
diff --git a/shell-pipelines/ls-grep/script-03.sh b/shell-pipelines/ls-grep/script-03.sh
index dbd1c809f..a823ff616 100755
--- a/shell-pipelines/ls-grep/script-03.sh
+++ b/shell-pipelines/ls-grep/script-03.sh
@@ -4,4 +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]*$'
\ No newline at end of file
+ls ./sample-files/ | grep '^[A-Z][^A-Z]*$'
diff --git a/shell-pipelines/ls-grep/script-04.sh b/shell-pipelines/ls-grep/script-04.sh
index ba5704492..c4e219a5f 100755
--- a/shell-pipelines/ls-grep/script-04.sh
+++ b/shell-pipelines/ls-grep/script-04.sh
@@ -4,4 +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 -c '^[A-Z][^A-Z]*$'
\ No newline at end of file
+ls ./sample-files/ | grep -c '^[A-Z][^A-Z]*$'

From 451c614131897634d572a3ad67809975955a4640 Mon Sep 17 00:00:00 2001
From: JanefrancessC <janefrancesschioma@gmail.com>
Date: Fri, 15 May 2026 16:11:16 +0100
Subject: [PATCH 6/6] fix: address PR review - add trailing newlines, fix -k3
 to -k3,3, add editorconfig

---
 shell-pipelines/sort-uniq-head-tail/script-01.sh | 2 +-
 shell-pipelines/sort-uniq-head-tail/script-02.sh | 2 +-
 shell-pipelines/sort-uniq-head-tail/script-03.sh | 5 +++--
 shell-pipelines/sort-uniq-head-tail/script-04.sh | 3 ++-
 shell-pipelines/sort-uniq-head-tail/script-05.sh | 2 +-
 shell-pipelines/sort-uniq-head-tail/script-06.sh | 2 +-
 shell-pipelines/sort-uniq-head-tail/script-07.sh | 2 +-
 shell-pipelines/tr/script-01.sh                  | 2 +-
 shell-pipelines/tr/script-02.sh                  | 2 +-
 9 files changed, 12 insertions(+), 10 deletions(-)

diff --git a/shell-pipelines/sort-uniq-head-tail/script-01.sh b/shell-pipelines/sort-uniq-head-tail/script-01.sh
index d14a741aa..d8c686938 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-01.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-01.sh
@@ -5,4 +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
+sort ./scores-table.txt 
diff --git a/shell-pipelines/sort-uniq-head-tail/script-02.sh b/shell-pipelines/sort-uniq-head-tail/script-02.sh
index 1bb8f8d3a..aac59bdcf 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-02.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-02.sh
@@ -5,4 +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 -nr ./scores-table.txt
\ No newline at end of file
+sort -k3,3 -nr ./scores-table.txt
diff --git a/shell-pipelines/sort-uniq-head-tail/script-03.sh b/shell-pipelines/sort-uniq-head-tail/script-03.sh
index 1abef0045..dcaad1fe0 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-03.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-03.sh
@@ -8,5 +8,6 @@ set -euo pipefail
 # Basia London 22 9 6
 # Piotr Glasgow 15 2 25 11 8
 # Chandra Birmingham 12 6
-sort -k3 -n ./scores-table.txt | tail -r -n3
-# sort -k3 -nr ./scores-table.txt | head -n3
\ No newline at end of file
+# sort -k3,3 -n ./scores-table.txt | tail -r -n3
+sort -k3,3 -nr ./scores-table.txt | head -n3
+
diff --git a/shell-pipelines/sort-uniq-head-tail/script-04.sh b/shell-pipelines/sort-uniq-head-tail/script-04.sh
index d661cf417..978ed75d4 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-04.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-04.sh
@@ -5,4 +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 -nr ./scores-table.txt | head -n2 | tail -n1
+sort -k3,3 -nr ./scores-table.txt | head -n2 | tail -n1
+
diff --git a/shell-pipelines/sort-uniq-head-tail/script-05.sh b/shell-pipelines/sort-uniq-head-tail/script-05.sh
index f35b162c7..c9a324075 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-05.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-05.sh
@@ -6,4 +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 -u ./events.txt
\ No newline at end of file
+sort -u ./events.txt
diff --git a/shell-pipelines/sort-uniq-head-tail/script-06.sh b/shell-pipelines/sort-uniq-head-tail/script-06.sh
index 12a816259..3879e4372 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-06.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-06.sh
@@ -5,4 +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
\ No newline at end of file
+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 fbe1a6c79..0073bd7ca 100755
--- a/shell-pipelines/sort-uniq-head-tail/script-07.sh
+++ b/shell-pipelines/sort-uniq-head-tail/script-07.sh
@@ -6,4 +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.
-grep -o 'Entry\|Exit' ./events-with-timestamps.txt | sort | uniq -c
\ No newline at end of file
+grep -o 'Entry\|Exit' ./events-with-timestamps.txt | sort | uniq -c
diff --git a/shell-pipelines/tr/script-01.sh b/shell-pipelines/tr/script-01.sh
index 5b5f40eb0..18406bc7c 100755
--- a/shell-pipelines/tr/script-01.sh
+++ b/shell-pipelines/tr/script-01.sh
@@ -7,4 +7,4 @@ set -euo pipefail
 #
 # TODO: Write a command to output the contents of text.txt with every exclamation mark (!) replaced with a full-stop (.).
 # cat ./text.txt | tr '!' '.'
-tr '!' '.' < ./text.txt
\ No newline at end of file
+tr '!' '.' < ./text.txt
diff --git a/shell-pipelines/tr/script-02.sh b/shell-pipelines/tr/script-02.sh
index 6fa21555b..4f8c28c69 100755
--- a/shell-pipelines/tr/script-02.sh
+++ b/shell-pipelines/tr/script-02.sh
@@ -7,4 +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
+tr 'YyZz' 'ZzYy' < ./text.txt