linux man page for expand

EXPAND(1)							   User Commands							 EXPAND(1)

NAME
       expand - convert tabs to spaces

SYNOPSIS
       expand [OPTION]... [FILE]...

DESCRIPTION
       Convert tabs in each FILE to spaces, writing to standard output.  With no FILE, or when FILE is -, read standard input.

       Mandatory arguments to long options are mandatory for short options too.

       -i, --initial
	      do not convert tabs after non blanks

       -t, --tabs=NUMBER
	      have tabs NUMBER characters apart, not 8

       -t, --tabs=LIST
	      use comma separated list of explicit tab positions

       --help display this help and exit

       --version
	      output version information and exit

AUTHOR
       Written by David MacKenzie.

REPORTING BUGS
       Report expand bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>
       Report expand translation bugs to <http://translationproject.org/team/>

COPYRIGHT
       Copyright (C) 2010 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO
       unexpand(1)

       The  full documentation for expand is maintained as a Texinfo manual.  If the info and expand programs are properly installed at your site,
       the command

	      info coreutils 'expand invocation'

       should give you access to the complete manual.

GNU coreutils 8.5						   February 2011							 EXPAND(1)