Redirection & Piping
Redirection & Piping
| Symbol | Function | Syntax |
|---|---|---|
| > | Redirect stdout and overwrite or create a file | prog > file |
| < | Redirect stdin | prog < file |
| >> | Redirect stdout and append to, or create a file | prog >> file |
| 2> | Redirect stderr | prog 2> file |
| 2>&1 | Send stderr and stdout to the same file | prog 2>&1 file |
| | | Pipe stdout of prog1 to stdin of prog2 | prog1 | prog2 |
| |& | Pipe stdout and stderr of prog1 to stdin of prog2 | prog1 |& prog2 |