TAC(1) User Commands TAC(1) NAME tac - concatenate and print files in reverse SYNOPSIS tac [OPTION]... [FILE]... DESCRIPTION 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. -b, --before attach the separator before instead of after -r, --regex interpret the separator as a regular expression -s, --separator=STRING use STRING as the separator instead of newline --help display this help and exit --version output version information and exit AUTHOR Written by Jay Lepreau and David MacKenzie. REPORTING BUGS Report bugs to . COPYRIGHT Copyright 2008 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later This is free software: you are free to change and redistribute it. There is NO WARRANTY, to the extent permitted by law. SEE ALSO The full documentation for tac is maintained as a Texinfo manual. If the info and tac programs are properly installed at your site, the com mand info tac should give you access to the complete manual. GNU coreutils 6.9.92.4-f088d-dirtJanuary 2008 TAC(1)