unexpand − unexpand
unexpand [OPTION]... [FILE]...
Convert blanks in each FILE to tabs, writing to standard output. With no FILE, or when FILE is −, read standard input.
−a, −−all
convert all blanks, instead of just initial blanks
−f, −−first−only
convert only leading sequences of blanks (overrides −a)
−t, −−tabs <N, LIST>
use comma separated LIST of tab positions or have tabs N characters apart instead of 8 (enables −a)
−U, −−no−utf8
interpret input file as 8−bit ASCII rather than UTF−8
−h, −−help
Print help
−V, −−version
Print version