'tac' - concatenate and print in reverse - Video Man Pages

The 'tac' is used to concatenate files and print them in reverse.

- Print the contents of a file in reverse (by line) to stdout:
tac path/to/file

- Concatenate specific files in reverse:
tac file1 path/to/file2 ...

- Display stdin in reversed order:
printf "one\ntwo\nthree\n" | tac

- Use a specific separator rather than the new line:
tac -s separator path/to/file1 path/to/file2 ...

- Use a specific regex as a separator:
tac -r -s 'regex' path/to/file1 path/to/file2 ...

EXAMPLE: tac -r -s 'x\|[^x]' file1
This matches either the character 'x' OR any character that is not 'x', effectively matching every character in the file.

- Use a separator (new line by default) before each file:
tac -b file1 file2 ...

REFERENCED:
► https://gitlab.com/dwt1/vidman

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