Teljes szöveg:
- Szkriptelés
- es a difference only when parameter has been declared and is null.| |${parameter-default},${parameter:-... es a difference only when parameter has been declared, but is null.| |${parameter=default},${parameter:... s a difference only when $parameter has been declared and is null.| |${parameter+alt_value},${parameter... es a difference only when parameter has been declared and is null.| |${var#Pattern} | Remove from $var