My problem is: I do not understand ANYTHING of the "FOR" command, is it possible for you to explain me how that "function" works? I see it's very usefull xD
"FOR" help
Moderator: DosItHelp
"FOR" help
Hello, I'm pretty new at this coding language, but I think I've got a bit experience
My problem is: I do not understand ANYTHING of the "FOR" command, is it possible for you to explain me how that "function" works? I see it's very usefull xD
My problem is: I do not understand ANYTHING of the "FOR" command, is it possible for you to explain me how that "function" works? I see it's very usefull xD
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greenfinch
- Posts: 36
- Joined: 17 Jul 2008 07:37
I found this very useful:
http://www.robvanderwoude.com/for.html
It helps to think:
FOR every TOKEN in (list, file, whatever) DO (something involving the token)
That's the basic format. The delims=, tokens= and so on basically let you get the right token to do things to - worry about that later.
http://www.robvanderwoude.com/for.html
It helps to think:
FOR every TOKEN in (list, file, whatever) DO (something involving the token)
That's the basic format. The delims=, tokens= and so on basically let you get the right token to do things to - worry about that later.
Thanks for your reply 
So, if I want to make a command to:
... make the same file twice, at two different locations:
FOR %a IN (%USERPROFILE%\desktop %USERPROFILE%\documents) DO echo start %CD% >> %a
... count to 20
FOR %a IN (1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20) DO echo %a
hmm.. I would normally do something like:
:loop
IF /I %a% GEQ 20 (goto end)
echo %a%
set /a a=%a%+1
goto loop
... to make 2 word "listings" (This is a wild guess
)
FOR %a IN (greetings, %yourname%, ., Please type your something) DO echo %a
okay... can you guys please correct me if I'm wrong?
EDIT: forgot to bold half of one of the command lines xD
So, if I want to make a command to:
... make the same file twice, at two different locations:
FOR %a IN (%USERPROFILE%\desktop %USERPROFILE%\documents) DO echo start %CD% >> %a
... count to 20
FOR %a IN (1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20) DO echo %a
hmm.. I would normally do something like:
:loop
IF /I %a% GEQ 20 (goto end)
echo %a%
set /a a=%a%+1
goto loop
... to make 2 word "listings" (This is a wild guess
)
FOR %a IN (greetings, %yourname%, ., Please type your something) DO echo %a
okay... can you guys please correct me if I'm wrong?
EDIT: forgot to bold half of one of the command lines xD
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greenfinch
- Posts: 36
- Joined: 17 Jul 2008 07:37
Just about right, yes!
In the first example, you need to specify a filename to output to within %a, e.g.
Your final example is more fiddly:
Here the /f switch enables use of the delims and tokens, you state that the delimiter is , and there are 3 tokens
Quotes are added to ("set") because (set) refers to a file, rather than a string
&& means "if the last command went OK, do this"
There might be a simpler way of doing this - still learning myself!
In the first example, you need to specify a filename to output to within %a, e.g.
Code: Select all
FOR %a IN (%USERPROFILE%\desktop %USERPROFILE%\documents) DO echo start %CD% >> %a\filename.txtYour final example is more fiddly:
Code: Select all
FOR /f "delims=, tokens=1-3" %a IN ("greetings %yourname%,., Please type your something") DO echo %a&&echo%b&&echo%cHere the /f switch enables use of the delims and tokens, you state that the delimiter is , and there are 3 tokens
Quotes are added to ("set") because (set) refers to a file, rather than a string
&& means "if the last command went OK, do this"
There might be a simpler way of doing this - still learning myself!