Linux Command Library
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unexpand

convert spaces to tabs

- Convert blanks in each file to tabs, writing to standard output:
unexpand [file]

- Convert blanks to tabs, reading from standard output:
unexpand

- Convert all blanks, instead of just initial blanks:
unexpand -a [file]

- Convert only leading sequences of blanks (overrides -a):
unexpand --first-only [file]

- Have tabs a certain number of characters apart, not 8 (enables -a):
unexpand -t [number] [file]

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
--version
output version information and exit

Written by David MacKenzie.

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

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.

expand(1)

Full documentation at: <http://www.gnu.org/software/coreutils/unexpand> or available locally via: info '(coreutils) unexpand invocation'

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