gsub

using ruby gsub in shell scripts

install

requires ruby, which comes preinstalled with almost all osx or linux operating systems

move the gsub file to a path which is loaded by your OS and make it executable

mv gsub /usr/bin

chmod +x gsub

usage examples

open a new terminal and run the gsub command without arguments

gsub

no arguments provided

Usage: gsub: find replace

echo "Hello World"

Hello World

echo "Hello World" | gsub World Universe

Hello Universe

echo "Hello World" | gsub World Universe | gsub 'Universe' 'Universe!'

Hello Universe!

todo

• regular expressions
• version number
• process files