Syntax shift [n] Options n : The number of parameters to shift (default = 1)
The positional parameters from
n+1 ... $#
are renamed to
$1 ... $#-n+1
Parameters represented by the numbers $# to n+1 are unset.
n must be a positive number less than or equal to $#.
The return status is zero unless n is greater than $# or less than zero.
shift is a bash builtin command.
“Here lies Colonel Chinstrap, drowned, From the inside” ~ Shifting sands, The Goon Show
getopts - Parse positional parameters
Equivalent Windows command: SHIFT - Shift parameters in a batch file