# cite 'uuid-alias' # about-alias 'uuidgen aliases' if [ "$(uuid 2>/dev/null)" != "" ]; then # Linux alias uuidu="uuid | tr '[:lower:]' '[:upper:]'" alias uuidl=uuid elif [ "$(uuidgen 2>/dev/null)" != "" ]; then # macOS/BSD alias uuidu="uuidgen" alias uuid="uuidgen | tr '[:upper:]' '[:lower:]'" # because upper case is like YELLING alias uuidl=uuid fi