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# col
> Filter reverse line feeds from input.
> More information: <https://manned.org/col>.
- Filter reverse line feeds from input:
`{{command}} | col`
- Filter reverse line feeds and output with spaces instead of tabs:
`{{command}} | col {{[-x|--spaces]}}`
- Remove backspaces, output only the last character written to each position:
`{{command}} | col {{[-b|--no-backspaces]}}`
- Specify a buffer size with a specific number of lines:
`{{command}} | col {{[-l|--lines]}} {{num}}`
- Format a manual page for viewing with `less`:
`man ls | col {{[-b|--no-backspaces]}} | less`
- Process a file with reverse line feeds and save the cleaned output:
`cat {{path/to/input_file}} | col {{[-x|--spaces]}} > {{output_file}}`