Abrer_Wiki

Redirection Operators

• > Creates a new file containing standard output. If specified file exists, it's overwritten. No File descriptor needed.
• » Appends standard output to existing file. If specified file doesn't exist, it's created. No descriptor necessary.
• 2> Creates a new file containing standard error. If the specified file exists it's overwritten. File descriptor necessary.
• 2» Appends standard error to existing file. Creates if doesn't exist. File descriptor necessary.
• &> Creates a new file containing both standard output and standard error. If file exists, it's overwritten. No file descriptor necessary.
• < Sends contents of specified file to be used as STDIN. No file descriptor necessary.
• « Accepts text on the following lines as STDIN. No file descriptor necessary.
• <> Causes specified file to be used for both STDIN and STDOUT. No file descriptor necessary.