tldr/pages/common/tac.md

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# tac
> Print and concatenate files in reverse (last line first).
> More information: <https://www.gnu.org/software/coreutils/tac>.
- Print the contents of *file1* reversed to the standard output:
`tac {{file1}}`
- Print the contents of the standard input reversed to the standard output:
`{{command}} | tac`
- Concatenate several files reversed into the target file:
`tac {{file1}} {{file2}} > {{target_file}}`