преобразовать пробелы в табуляции  (convert spaces to tabs)
  
Имя (Name)
unexpand - convert spaces to tabs
Синопсис (Synopsis)
unexpand [OPTION]... [FILE]...
Описание (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