Shift command in Shell

Okay. Run this script and you will understand it.

#! /Bin/bash Until [ $ #-EQ 0] Do Echo "$ @" Shift Done

See the role. When shift (without parameters) is run each time, a parameter is destroyed and the subsequent parameter is moved forward.
Output:

YY-QS :~ #./Test. Sh 1 2 3 4 5 6 7 8 9 10
1 2 3 4 5 6 7 8 9 10
2 3 4 5 6 7 8 9 10
3 4 5 6 7 8 9 10
4 5 6 7 8 9 10
5 6 7 8 9 10
6 7 8 9 10
7 8 9 10
8 9 10
9 10
10

The number of moving parameters at a time is specified by the parameter included in the shift command. For example, whenProgramAfter processing the first nine command line parameters, you can use the shift 9 command to move $10 to $1.
Important: Bash defines nine location variables, from $1 to $9. This does not mean that you can only use nine parameters in the command line, you can use the shift command to access more than 9 parameters.