NAME tac - concatenate and print files in reverse SYNOPSIS tac [ OPTION ]... [ FILE ]... DESCRIPTION Write each ... /software/coreutils/tac> or available locally via: info '(coreut…originates with a developer's pun: tic , tac (now tack ), toe . EXAMPLES When not sortingbugs to <https://translationproject.org/team/> SEE ALSO tac (1) Full documentation <https://www.gnu.org/software/coreutils/catversion Display version and exit. SEE ALSO tac (1) REPORTING BUGS For bug reportssome kind. Example: ExecStart=sh -c 'dmesg | tac' Example: ExecStart=echo one ExecStart=echo