Whitespace in shell script command-line arguments

Look at a little script

#!/bin/bash#demonstarting the shift commandcount=1while"$"  Do          "Parameter # $count =$1" Count 1]                  Shiftdoneechoecho

The script first tests whether the first parameter exists as- n "$" , prints if it exists, and then all parameters move to the left one position, and the value of the variable is overwritten, and the variable $ (that is, the program name) It's not going to change.

Well, let's see.

Note that the above two executes the command anti-white place, the first is the TAB key auto-completion, followed by a space. The second command does not have that white space character behind it.

Take a look at the results, corresponding to the above two commands

Hey, but there's still a print.

Whitespace in shell script command-line arguments