Bash redirections
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Redirection makes it possible to control where the output of a command goes to, and where the input of a command comes from. Under normal circumstances, there are 3 files open, accessible by the file descriptors (FD) 0, 1 and 2, all connected to your terminal:
Name | FD | Description |
---|---|---|
stdin | 0 |
standard input stream (e.g. keyboard) |
stdout | 1 |
standard output stream (e.g. monitor) |
stderr | 2 |
standard error output stream (usually also on monitor) |
See some examples below:
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