expand — convert tabs to spaces
expand
[OPTION
...] [FILE
...]
Convert tabs in each FILE to spaces, 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.
−i
, −−initial
do not convert tabs after non blanks
−t
, −−tabs
=NUMBER
have tabs NUMBER characters apart, not 8
−t
, −−tabs
=LIST
use comma separated list of explicit tab positions
−−help
display this help and exit
−−version
output version information and exit