unexpand(1) convert spaces to tabs

SYNOPSIS

unexpand [,OPTION/]... [,FILE/]...

DESCRIPTION

Convert blanks in each FILE to tabs, 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.

-a, --all
convert all blanks, instead of just initial blanks
--first-only
convert only leading sequences of blanks (overrides -a)
-t, --tabs=,N/
have tabs N characters apart instead of 8 (enables -a)
-t, --tabs=,LIST/
use comma separated LIST of tab positions (enables -a)
--help
display this help and exit
--version
output version information and exit

AUTHOR

Written by David MacKenzie.

REPORTING BUGS

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

COPYRIGHT

Copyright © 2016 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.