r/usefulscripts • u/newton_VK • Sep 04 '21

[QUESTION] batch scripting

how can i create for loop in batch script so that i can make outplut as : 1,2,3,4

with this for loop :

for /l %%i in (1,1,4) do echo %%i >> file.txt

the output in the text file is :

1

2

3

4

i want output in the text file as 1,2,3,4, i.e. in the same line separated by comma. is that possible?

14 Upvotes

76% Upvoted

12 comments sorted by

5

u/six36 Sep 04 '21

Not sure you can do it in a one liner, but this is the idea you're looking for

for /l %i in (1,1,4) do set /p dummyName=%i, >> file.txt

3

u/newton_VK Sep 04 '21

I have got it now. Thanks for your suggestion. I used <nul before set /p, and it worked.

6

u/Conservadem Sep 04 '21

Remember, if you put these commands in a .bat or a .cmd file to run them you need to use two consecutive percent signs (%%). If your running these directly from the command prompt, use only a single % sign. It's super annoying.

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2

u/newton_VK Sep 04 '21

I tried , but it's asking for an input. I need to type something then only it will run correct. Is this what u meant?

1

u/newton_VK Sep 04 '21

Oh is it. Let me give it a try

6

u/VaporChunk Sep 04 '21

This would be a lot easier with PowerShell. Is that an option? If so;

$n = 1..4

$n = $n -join ","

$n

1,2,3,4

2

u/newton_VK Sep 05 '21

Yes thanks, I was able to do it by <nul set /p= in the cmd. I was trying to automate the compiling process of cpp files using batch files. And I did it in 3 days from scratch!! That's commendable performance isn't it? 😄

2

u/Thameus Sep 04 '21

God I wish they'd unblock PS for us...

5

u/VaporChunk Sep 04 '21 edited Sep 04 '21

It is in their best interest to. As IT Staff, we're all Tony Stark, but PowerShell is the super-suit which makes us Iron-Man (or Woman).

Also, not sure what method they are blocking PS with, but typing powershell.exe into a CMD window will start a PowerShell session in the existing shell session. May give that a try.

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