unexpand - convert spaces to tabs
[-tab1[,tab2[,...]]] [-t tab1[,tab2[,...]]] [-a]
[--tabs=tab1[,tab2[,...]]] [--all] [--help] [--version] [file...]
This manual page
documents the GNU version of
writes the contents of each given file, or the standard input if
none are given or when a file named `-' is given, to the standard
output, with strings of two or more space or tab characters converted
to as many tabs as possible followed by as many spaces as are needed.
converts only initial spaces and tabs (those that precede all non
space or tab characters) on each line. It preserves
backspace characters in the output; they decrement the column count
for tab calculations. By default, tabs are set at every 8th column.
-, -t, --tabs tab1[,tab2[,...]]
If only one tab stop is given, set the tabs tab1 spaces apart
instead of the default 8. Otherwise, set the tabs at columns
tab1, tab2, etc. (numbered from 0) and leave spaces and
tabs beyond the tabstops given unchanged. If the tabstops are
specified with the
option, they can be separated by blanks as well as by commas.
This option implies the
Convert all strings of two or more spaces or tabs, not just initial
ones, to tabs.
Print a usage message and exit with a status code indicating success.
Print version information on standard output then exit.