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The parameter that can be referenced in the batch file is% 0% 9, and% 0 refers to the batch file itself, or an external command;% 1% 9 is a batch parameter, also known as a formal parameter; and if the arguments of replacing formal parameters exceed the values specified in the batch file (9) and want to apply these arguments in the batch file, the shift command can help you!

Shift command: changing the location of replaceable parameters in a batch file

C code

Shift [/ n]

The value of shift [/ n] n is [0Magne8] and is an integer; [/ n] is an optional parameter, and when given a value to n, it means that the command starts to shift from the nth parameter; when the value given by n is 0Magne1 or shift without any command options, it means that the replacement parameter in the batch file moves one position to the left, and the subsequent replacement parameters are filled one after another until the replaceable parameter is empty.

Eg: create batch file d:\ test.bat;C code

The code is as follows:

@ echo off

Cls

Echo 1 2 3 4 5 6 7 8 9

Shift / 0

Echo 1 2 3 4 5 6 7 8 9

Shift / 1

Echo 1 2 3 4 5 6 7 8 9

Shift / 2

Echo 1 2 3 4 5 6 7 8 9

Shift / 3

Echo 1 2 3 4 5 6 7 8 9

Shift / 4

Echo 1 2 3 4 5 6 7 8 9

Shift / 5

Echo 1 2 3 4 5 6 7 8 9

Shift / 6

Echo 1 2 3 4 5 6 7 8 9

Shift / 7

Echo 1 2 3 4 5 6 7 8 9

Shift / 8

Echo 1 2 3 4 5 6 7 8 9

Pause 1 > nul

@ echo offclsecho 1% 2% 3% 4% 5% 7% 8% 9shift / 0echo% 1% 3% 4% 5% 6% 8% 9shift / 1echo% 1% 2% 3% 4% 5% 6% 7% 8% 9shift / 2echo% 1% 3% 4% 5% 7% 8% 9shift / 3echo% 1% 3% 4% 5% 7% 8% 9shift / 4echo% 1% 2% 3% 4% 5% 6% 7% 8% 8% 8% 9shift / 5echo 1% 2% 3% 4% 5% 6% 8% 9shift / 6echo% 1% 2% 3% 4% 5% 6% 7% 8% 9shift / 7echo% 1% 2% 3% 4% 5% 6% 8% 9shift / 8echo 1% 2% 3% 4% 5% 7% 8% 9pause 1 > nul

Then enter test 1234.17 at the command prompt d:\ to display the execution result, and you will know the rule! C code

D:\ > test 12 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17

1 2 3 4 5 6 7 8 9

2 3 4 5 6 7 8 9 10

3 4 5 6 7 8 9 10 11

3 5 6 7 8 9 10 11 12

3 5 7 8 9 10 11 12 13

3 5 7 9 10 11 12 13 14

3 5 7 9 11 12 13 14 15

3 5 7 9 11 13 14 15 16

3 5 7 9 11 13 15 16 17

3 5 7 9 11 13 15 17

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