fixes made and training endings added

Author: katarzynakaz

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

shell-pipelines/ls-grep/script-02.sh

@@ -5,3 +5,4 @@ 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]'
+

shell-pipelines/ls-grep/script-03.sh

@@ -5,3 +5,4 @@ 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]*$'
+

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 '^[A-Z][^A-Z]*$' | wc -l 
+ls sample-files | grep '^[A-Z][^A-Z]*$' | 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 scores-table.txt -k3 -n -r
+sort scores-table.txt -k3 -n -r

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 scores-table.txt -k3 -n -r | head -3
+sort scores-table.txt -k3 -n -r | head -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 scores-table.txt -k3 -n -r | head -3 | tail -2 | head -1
+sort scores-table.txt -k3 -n -r | head -2 | tail -1

shell-pipelines/sort-uniq-head-tail/script-06.sh

@@ -5,5 +5,5 @@ 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.
-grep -c 'Entry' events.txt | sort
-grep -c 'Exit' events.txt | sort
+grep -o 'Entry' events.txt | uniq -c
+grep -o 'Exit' events.txt | uniq -c

shell-pipelines/sort-uniq-head-tail/script-07.sh

@@ -6,7 +6,5 @@ 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.
-# echo "Entry: ${grep -c 'Entry' events-with-timestamps.txt}"
-# echo "Exit: ${grep -c 'Exit' events-with-timestamps.txt}"
-echo "Entry: $(grep -c 'Entry' events-with-timestamps.txt)"
-echo "Exit:  $(grep -c 'Exit'  events-with-timestamps.txt)"
+grep -o 'Entry' events-with-timestamps.txt | uniq -c
+grep -o 'Exit' events-with-timestamps.txt | uniq -c