UNEXPAND(1) User Commands UNEXPAND(1) NAME unexpand - 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 Report unexpand bugs to bug-coreutils@gnu.org GNU coreutils home page: General help using GNU software: COPYRIGHT Copyright © 2009 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 expand(1) The full documentation for unexpand is maintained as a Texinfo manual. If the info and unexpand programs are properly installed at your site, the command info coreutils 'unexpand invocation' should give you access to the complete manual. GNU coreutils 7.2 March 2009 UNEXPAND(1)