Nic's Stuff

Substitutions

Setting default values:

• Return on unset value: VAR=${VAR:-blarg}
• Assign on unset value: ${VAR:=blarg}

Substituting substring:

• First occurence: ${FILE/urs/usr}
• All occurences: ${FILE//urs/usr}
• At end of string: ${FILE/%.jpg/.png}
• At front of string: ${FILE/#${HOME}/~/}

Command substitutions:

• Either: `pwd`
• Or: $(pwd)

• Either: `basename \`pwd\``
• Or: $(basename $(pwd))

History