String parsing: For loop Windows Batch Script

Question

I've spent a while reading through http://ss64.com/nt/for_cmd.html, going through various other questions, and trying a lot of different little command-line variations of the examples, but still haven't gotten a simple for loop task down yet.

Basically, I want to do something where the command is something like

FOR /f %%G in ("1 2 7 16 21 26 688") do(
    echo %%G
)

The output I want to get is

1
2
...
688

But all I get is

And then it exits. Through experimenting with various arguments (i.e. have tried "tokens=*", echo %%G echo %%H, "delims= "), nothing gets the desired output. Rather, I get stuff like

1 2 7 ... 688

or

1 %H

/f is (basically) for processing files (or command outputs). To process elements (a list), use for without /f — Stephan
– Stephan, Commented Jul 28, 2016 at 6:08

Hackoo · Accepted Answer · 2016-07-27 22:24:35Z

1

Try it like this way with a batch file :

@echo off
FOR %%G in (1 2 7 16 21 26 688) do (
    echo %%G
)
pause>nul

answered Jul 27, 2016 at 22:24

Hackoo

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SHII · Accepted Answer · 2024-03-31 20:06:12Z

0

It appears that it's important to express that you want the 7 specific items extracted by calling for tokens=1-7. Token 1 will be %%G, with each successive, stipulated token using %%H, %%I, etc. Wanting to express one line for each token comes by echoing them 1 echo command at a time for each token's variable, either as one per line stacked or parenthetically grouped sequentially with &s: do (echo %%G) & (echo %%H) & (echo %%I)... etc

In total, the following worked for me:

for /f "tokens=1-7" %%G in ("1 2 7 16 21 26 688") do (  
    echo %%G  
    echo %%H  
    echo %%I  
    echo %%J  
    echo %%K  
    echo %%L  
    echo %%M  
    )

edited Mar 31, 2024 at 20:06

answered Mar 31, 2024 at 19:43

SHII

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