Fix: fixed the trailing end line and exercise 3 and 4.

Author: jamallaqdiem

.gitignore

@@ -1 +1,2 @@
 node_modules
+.venv

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 -1 sample-files | grep '[A-Z]'
+ls -1 sample-files | grep '[A-Z]'

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 -1 sample-files | grep  '^[A-Z]'
+ls -1 sample-files | grep  '^[A-Z]'

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 -1 sample-files | grep '^[A-Z][a-z]*$'
+ls -1 sample-files | grep '^[A-Z][^A-Z]*$'

shell-pipelines/ls-grep/script-04.sh

@@ -6,4 +6,4 @@ set -euo pipefail
 # Your output should be the number 7.
 #!/bin/bash
 
-ls -1 sample-files | grep '^[A-Z][a-z]*$' | wc -l
+ls -1 sample-files | grep '^[A-Z][^A-Z]*$' | wc -l

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 
+sort scores-table.txt 

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 -k3,3nr  scores-table.txt 
+sort -k3,3nr  scores-table.txt 

shell-pipelines/sort-uniq-head-tail/script-03.sh

@@ -8,4 +8,4 @@ set -euo pipefail
 # Basia London 22 9 6
 # Piotr Glasgow 15 2 25 11 8
 # Chandra Birmingham 12 6
-sort -k3,3nr  scores-table.txt | head -n 3
+sort -k3,3nr  scores-table.txt | head -n 3

shell-pipelines/sort-uniq-head-tail/script-04.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 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 -k3,3nr  scores-table.txt | head -n 2 | tail -n 1
+sort -k3,3nr  scores-table.txt | head -n 2 | tail -n 1

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 events.txt | uniq
+sort events.txt | uniq