tac (1)

Quick Reference

Print and concatenate files in reverse.

  • Print the contents of file1 reversed to the standard output:

tac {{file1}}

  • Concatenate several files reversed into the target file:

tac {{file1}} {{file2}} > {{target_file}}

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

GNU coreutils online help: <https://www.gnu.org/software/coreutils/>
 
Report tac translation bugs to <https://translationproject.org/team/>

SEE ALSO

rev(1)
Full documentation at: <https://www.gnu.org/software/coreutils/tac>
 
or available locally via: info '(coreutils) tac invocation'

Information

Source
Coreutils
OS/version
GNU coreutils 8.29.13-0a854
Source updated
December 2, 2018
Page created
February 9, 2018
Page generated
December 2, 2018