Question

I have this for loop to get a list of directory names:

for /d %%g in (%windir%\Assembly\gac_msil\*policy*A.D*) do (
echo %%g
)

Output:

C:\WINDOWS\Assembly\gac_msil\policy.5.0.A.D
C:\WINDOWS\Assembly\gac_msil\policy.5.0.A.D.O
C:\WINDOWS\Assembly\gac_msil\policy.5.20.A.D.O
C:\WINDOWS\Assembly\gac_msil\policy.5.25.A.D.O
C:\WINDOWS\Assembly\gac_msil\policy.5.35.A.D.O
C:\WINDOWS\Assembly\gac_msil\policy.5.55.A.D.O
C:\WINDOWS\Assembly\gac_msil\policy.5.60.A.D.O
C:\WINDOWS\Assembly\gac_msil\policy.5.70.A.D.O
C:\WINDOWS\Assembly\gac_msil\policy.6.0.A.D.O

I want to get the folder names starting with “policy” but echo %%g:~29 doesn’t work.
I also tried to set x=%%g and then echo %x:~29% and still doesn’t work.

So, how do I get substring from token in for loop?

Answer 1

Of course that set x=%%g and a substring extraction of x should work, but be aware that if the substring is taken inside a FOR loop, it must be done with ! instead of % (Delayed Expansion):

setlocal EnableDelayedExpansion
for /d %%g in (%windir%\Assembly\gac_msil\*policy*A.D*) do (
set x=%%g
echo !x:~29!
)