touch /tmp/login1.txt /tmp/login2.txt
while [ true ]
do
	who | gawk '{ print $1 }' > /tmp/login2.txt
	comm -13 /tmp/login1.txt /tmp/login2.txt

	#Just a bit easier to read

	#diff /tmp/login1.txt /tmp/login2.txt
	cat /tmp/login2.txt > /tmp/login1.txt
	sleep 1
done

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"

#!/bin/bash

# Turns 4 spaces into tabs.

# Mostly stolen from AI

# Define the directory to process
DIRECTORY=$1
TabCount=${2:-'4'}    #Defaults to 4


# Check if directory is specified
if [ -z "$DIRECTORY" ]; then
    echo "Error: Directory not specified."
    exit 1
fi


# Check if directory exists
if [ ! -d "$DIRECTORY" ]; then
    echo "Error: Directory does not exist."
    exit 1
fi


# Find all files in directory and subdirectories
FILES=$(find "$DIRECTORY" -type f)


# Loop through each file and unexpand it
for FILE in $FILES; do
	unexpand -t "$TabCount" "$FILE" > "$FILE.tmp"
	mv "$FILE.tmp" "$FILE"
done

echo "Done!"

#!/bin/bash

#Leif Messinger lsm0147

#credit.sh FILES
cred="Leif Messinger lsm0147"
for bruh; do
	if [[ $bruh =~ \.cpp|\.c|\.java|\.js ]]; then
		comment="//$cred"
	else

		#Basically everything else gets a pound sign comment

		#Pound signs are standard across linux. bash, sed, gawk, python etc

		#Speaking of which, I need to escape it because of that.
		comment="\#$cred"
	fi
	if [ -s $bruh ]; then

		#If the file has a shebang
		if egrep -q '^#!/' $bruh; then
			sed -i "/^\#!\//a$comment" $bruh
		else
			sed -i "1i$comment" $bruh
		fi
	else
		echo "$comment" > $bruh
	fi
done

#!/bin/bash


# Recursively find all .svelte files in the current directory and its subdirectories
find . -type f -name "*.svelte" -o -name "*.html" -o -name "*.htm" | while read file; do
        # Replace all h1 tags with the specified format
        sed -i 's/<h1>\(.*\)<\/h1>/<h1 id="\1">\1<\/h1>/g' "$file"
        # Replace all h2 tags with the specified format
        sed -i 's/<h2>\(.*\)<\/h2>/<h2 id="\1">\1<\/h2>/g' "$file"
        # Remove whitespace from the id attribute value
        for i in {0..10} ; do
                sed -i 's/\(id="[^"]*\)\W\([^"]*"\)/\1\2/g' "$file"
        done
done

#!/bin/bash

#Takes all the c and h files in the current directory and prints them

#Yup, it's that easy
for file in *.h *.hpp *.c *.cpp; do

	#If it exists
	if [ -f "$file" ]; then
	echo "//===============$file==============="
	cat $file
	fi
done