TAC(1)

NAME
       tac - concatenate and print files in reverse

SYNOPSIS
       tac  [-br]  [-s separator] [--before] [--regex] [--separa-
       tor=separator] [--help] [--version] [file...]

DESCRIPTION
       This documentation is no longer being maintained  and  may
       be inaccurate or incomplete.  The Texinfo documentation is
       now the authoritative source.

       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 string, --separator=string
              Use string as the record separator.

       --help Print a usage message and exit with a  status  code
              indicating success.

       --version
              Print  version  information on standard output then
              exit.