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TAC(1L) TAC(1L)
NAME
tac - concatenate and print files in reverse
SYNOPSIS
tac [-br] [-s separator] [--before] [--regex] [--separa-
tor=separator] [--help] [--version] [file...]
DESCRIPTION
This manual page documents the GNU version of tac. tac
copies each given file, or the standard input if none are
given or when a file name of `-' is encountered, to the
standard output with the order of the records reversed.
The records are separated by instances of a string, or a
newline if none is given. By default, the separator
string is attached to the end of the record that it fol-
lows in the file.
OPTIONS
-b, --before
The separator is attached to the beginning of the
record that it precedes in the file.
-r, --regex
The separator is a regular expression.
-s, --separator separator
Use separator as the record separator.
--help Print a usage message and exit with a non-zero sta-
tus.
--version
Print version information on standard error then
exit.
FSF GNU Text Utilities 1