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unexpand - convert spaces to tabs


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


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

output version information and exit


Written by David MacKenzie.

Reporting Bugs

Report bugs to <>.


Copyright (C) 2006 Free Software Foundation, Inc. This is free software. You may redistribute copies of it under the terms of the GNU General Public License <>. There is NO WARRANTY, to the extent permitted by law.

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 unexpand

should give you access to the complete manual.

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