Separate batch string, remove substr-CodePudding

I have the following string:

9/14/22 11:00:12,,,0,0,,,,,,

I need to remove "9/14/22 11:00:12" so I only have ,,,0,0,,,,,, left over.

@echo off
set str=9/14/22 11:00:12,,,0,0,,,,,,
FOR /F "tokens=1* delims=," %%a in ("%str%") DO (
    set REMOVE_STR=%%a
)
set REMAINING_STR=%str:;%REMOVE_STR%;=%
echo New string: %REMAINING_STR%

The output is just the original string, so I know there's a problem with the substr removal step. But, I can't figure out what I'm doing wrong.

CodePudding user response：

You need delayed expansion to use variables inside a code block that you defined/changed within the same block:

@echo off
setlocal enabledelayedexpansion 

set str=9/14/22 11:00:12,,,0,0,,,,,,
FOR /F "tokens=1 delims=," %%a in ("%str%") DO ( 
  set "remaining_str=!str:%%a=!"
  echo New string: !Remaining_Str!
)

Output:

New string: ,,,0,0,,,,,,

CodePudding user response：

You don't need a for loop, or delayed expansion for that task, you can do it with direct variable expansion and sustitution, just like this:

@Echo Off
SetLocal EnableExtensions DisableDelayedExpansion

Set "str=9/14/22 11:00:12,,,0,0,,,,,,"

Set "REMAINING_STR=,%str:*,=%
Echo New string: %REMAINING_STR%

The above substitutes everything up to the first comma, with nothing, in the expanded variable, and precedes that with the initially first removed comma.