TAC(1) TAC(1) (NAME) tac - (SYNOPSIS) tac []... []... (DESCRIPTION) . - . . -b, --before -r, --regex (regular expression) -s, --separator=STRING STRING --help --version (AUTHOR) Jay Lepreau David MacKenzie. (REPORTING BUGS) GNU coreutils: : (COPYRIGHT) (C) 2025 Free Software Foundation, Inc. GPLv3+: GPL . : . . (SEE ALSO) cat(1), rev(1) : : info '(coreutils) tac invocation' GNU coreutils 9.7 June 2025 TAC(1)