UNEXPAND(1) UNEXPAND(1) unexpand - convert spaces to tabs unexpand []... []... , . , -, . . -a, --all , --first-only ( -a) -t, --tabs= N 8 ( -a) -t, --tabs= 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 --version . coreutils: Copyright (C) 2024 Free Software Foundation, Inc. 3+: 3 . : . , . expand(1) ,,info '(coreutils) unexpand invocation'" ; 3 . . , - TODO <>. coreutils 9.5 2024 UNEXPAND(1)