linux

url decode

alias urldecode = 'sed "s@+@ @g;s@%@\\\\x@g" | xargs -0 printf "%b"'
echo "http%3A%2F%2Fwww" | urldecode

Delete lines from a file and generate new file

delete lines 1 to 4

sed '1,4d' $filename > extracted_file.txt

delete lines 1, 3 and 5

sed -e '1d;3d;5d' $filename

Converting from linux to Windows line breaks

sed -i 's/$/\r/' linuxFile.txt

Parse json and get value of a key in json

jq -r '.data[].element.key' response.json > result

Bash configuration

alias _bash='nano ~/.bashrc'
alias _b='cat ~/.bashrc'