A quick note for myself as I'd forgotten how to do this (we're talking technology belonging to the 90s - MS-DOS v6.22). The example wants to loop through a directory and then loop through the line it finds.
Why?
I use another technology for automation but sometimes the simpler solution is the one I make for other people to use. Explaining MS-DOS batch programs is a lot easier and colleagues trust these more than my all-in-one GUI applications.
How?
Note: we're using the code in a DOS Batch program so our variables have to be prefixed with a double-percent rather than just the one:
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So that's our first loop, here's what the second loop should do:
-- the following loops through directory for any file beginning with Reference
FOR %%A IN ('DIR InitializingFile*') DO ECHO %%A
-- yields:
InitializingFile_123.csv
InitializingFile_456.csv
-- the following loops through directory and separates by underscores
FOR /F "tokens=2,3* delims=_" %%A IN ('DIR InitializingFile*') DO ECHO %%A
-- yields:
123.csv
456.csv
- -- the following loops through directory for any file beginning with Reference
- FOR %%A IN ('DIR InitializingFile*') DO ECHO %%A
- -- yields:
- InitializingFile_123.csv
- InitializingFile_456.csv
- -- the following loops through directory and separates by underscores
- FOR /F "tokens=2,3* delims=_" %%A IN ('DIR InitializingFile*') DO ECHO %%A
- -- yields:
- 123.csv
- 456.csv
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Combining the two above FOR statements:
-- the following loops through a line and separates by period (.)
FOR /F "tokens=1,2* delims=." %%I IN ('DIR InitializingFile*') DO ECHO %%I
-- yields:
InitializingFile_123
InitializingFile_456
- -- the following loops through a line and separates by period (.)
- FOR /F "tokens=1,2* delims=." %%I IN ('DIR InitializingFile*') DO ECHO %%I
- -- yields:
- InitializingFile_123
- InitializingFile_456
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FOR /F "tokens=2,3* delims=_" %%A IN ('DIR InitializingFile*') DO FOR /F "tokens=1,2* delims=." %%I IN ('ECHO %%A') DO ECHO %%I
-- yields:
123
456
- FOR /F "tokens=2,3* delims=_" %%A IN ('DIR InitializingFile*') DO FOR /F "tokens=1,2* delims=." %%I IN ('ECHO %%A') DO ECHO %%I
- -- yields:
- 123
- 456
So Job done. Chances are you need to use this variable a little more:
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@ECHO OFF
FOR /F "tokens=2,3* delims=_" %%A IN ('DIR InitializingFile*') DO FOR /F "tokens=1,2* delims=." %%I IN ('ECHO %%A') DO (
ECHO %%I
GOTO 1
)
:1
ECHO Done.
-- yields:
123
Done.
- @ECHO OFF
- FOR /F "tokens=2,3* delims=_" %%A IN ('DIR InitializingFile*') DO FOR /F "tokens=1,2* delims=." %%I IN ('ECHO %%A') DO (
- ECHO %%I
- GOTO 1
- )
- :1
- ECHO Done.
- -- yields:
- 123
- Done.
Category: MS-DOS :: Article: 524
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