tac - concatenate and print files in reverse
tac [OPTION]... [FILE]...
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.
attach the separator before instead of after
interpret the separator as a regular expression
STRINGuse STRING as the separator instead of newline
display this help and exit
output version information and exit
Written by Jay Lepreau and David MacKenzie.
GNU coreutils online help:
<https://www.gnu.org/software/coreutils/>
Report any translation bugs to
<https://translationproject.org/team/>
Copyright © 2023 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.
Full documentation
<https://www.gnu.org/software/coreutils/tac>
or available locally via: info '(coreutils) tac invocation'