Linux Commands Examples

A great documentation place for Linux commands


convert spaces to tabs

see also : expand


unexpand [OPTION]... [FILE]...

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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.
, --all

convert all blanks, instead of just initial blanks


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)


display this help and exit


output version information and exit


Copyright © 2012 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.

reporting bugs

Report unexpand bugs to bug-coreutils[:at:]gnu[:dot:]org
GNU coreutils home page: <>
General help using GNU software: <>
Report unexpand translation bugs to <>

see also


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.


Written by David MacKenzie.

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