Linux manual pages Section 1  

Name

tac — concatenate and print files in reverse

Synopsis

tac [OPTION...] [FILE...]

DESCRIPTION

Write each FILE to standard output, last line first.

With no FILE, or when FILE is −, read standard input.

Mandatory arguments to long options are mandatory for short options too.

−b, −−before

attach the separator before instead of after

−r, −−regex

interpret the separator as a regular expression

−s, −−separator=STRING/

use STRING as the separator instead of newline

−−help

display this help and exit

−−version

output version information and exit

AUTHOR

Written by Jay Lepreau and David MacKenzie.

REPORTING BUGS

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>

Report any translation bugs to <https://translationproject.org/team/>

SEE ALSO

cat(1), rev(1)

Full documentation <https://www.gnu.org/software/coreutils/tac>

or available locally via: info '(coreutils) tac invocation'

COPYRIGHT

Copyright © 2022 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://gnu.org/licenses/gpl.html>.

This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law.