name="John"
echo ${name}
echo ${name/J/j}    #=> "john" (substitution)
echo ${name:0:2}    #=> "Jo" (slicing)
echo ${name::2}     #=> "Jo" (slicing)
echo ${name::-1}    #=> "Joh" (slicing)
echo ${name:(-1)}   #=> "n" (slicing from right)
echo ${name:(-2):1} #=> "h" (slicing from right)
echo ${food:-Cake}  #=> $food or "Cake"

#diskRipper.sh by Leif Messinger

#For use on debian, where your cds aren't immediately mounted
wall "CD inserted boss"
set -x	#echo on

cdDrivePath=$(ls -l /dev/cdrom | awk '{print $NF}')

#CD could have no label, so that's why I need awk
cdLabel=$(lsblk -n "/dev/$cdDrivePath" -o label)
if [[ ! -z "$cdLabel" ]]; then	#CD has label
folderName=$cdLabel
echo "The cd label is ${folderName}"
if mkdir ./cds/"${folderName}"; then	#Folder didn't exist before
sudo mount /dev/cdrom ./.cdmountpoint

sudo cp -r ./.cdmountpoint/* "./cds/${folderName}"
sudo chmod -R 777 "./cds/${folderName}"

sudo umount ./.cdmountpoint
eject
wall "CD done and ejecting"
else
wall "Already read that cd, skipped"
fi
else
wall "CD had no label, skipped"
fi

# Three ways of checking if a file exists in a shell script

FILE=/etc/resolv.conf

if test -f "$FILE"; then
    echo "$FILE exists."
fi

if [ -f "$FILE" ]; then
    echo "$FILE exists."
fi

if [[ -f "$FILE" ]]; then
    echo "$FILE exists."
fi

#!/bin/bash

#getDependencies.sh by Leif Messinger
	grep -Po '#include\s*"\K.+(?=")' | while read -r line ; do
	echo -n " $line"
	./getDependencies.sh < $line
done

awk '\
{ for (i=1; i<=NF; i++) { ++D[$i]; } }\
END { for (i in D) { print i, D[i] } }\
' words.txt | sort -nr -k 2

#!/bin/bash


# Set the directory to search
DIRECTORY="src"


# Set the output file
OUTPUT_FILE="testids.txt"


# Clear the output file

> "$OUTPUT_FILE"


# Find all .tsx files in the specified directory and its subdirectories
find "$DIRECTORY" -type f -name "*.tsx" | while read -r FILE
do

  # Search for instances of 'data-testid="testid"' and append them to the output file
  grep -o 'data-testid="[^"]*"' "$FILE" >> "$OUTPUT_FILE"

  # Search for instances of "'data-testid': 'testid'" and append them to the output file
  grep -o "'data-testid': '[^']*'" "$FILE" >> "$OUTPUT_FILE"
done

echo "Search complete. Test IDs written to $OUTPUT_FILE."