unexpand

convert spaces to tabs

TLDR

Convert blanks in each file to tabs, writing to standard output

$ unexpand [file]
copy

Convert blanks to tabs, reading from standard output

$ unexpand
copy

Convert all blanks, instead of just initial blanks

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

$ unexpand --first-only [file]
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Have tabs a certain number of characters apart, not 8 (enables -a)

$ unexpand -t [number] [file]
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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 The last specified position can be prefixed with '/' to specify a tab size to use after the last explicitly specified tab stop. Also a prefix of '+' can be used to align remaining tab stops relative to the last specified tab stop instead of the first column

--help

display this help and exit

--version

output version information and exit

REPORTING BUGS

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

COPYRIGHT

Copyright © 2020 Free Software Foundation, Inc. License GPLv3+: GNU GPL version 3 or later <https://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.

SEE ALSO

expand(1) Full documentation <https://www.gnu.org/software/coreutils/unexpand> or available locally via: info '(coreutils) unexpand invocation'

AUTHOR

Written by David MacKenzie.

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