add the condition statement to check directory existence. batch scripting

Question

I need to add in a conditional statement to check for a folder so that it can exexute the below script. Lets say the script is placed in folder c:/temp/A but I want the script to excute and change the file extensions of files in a another directory d:/xxx/B. If directory B doesnt exists, throw an error and exit. I tried using if else statement but its says no else statement is allowed. Please help me out and let me know how it can be done.

@echo off
setlocal ENABLEDELAYEDEXPANSION
for %%F in (*.*_error* *.*error_*) do ( set "ext=%%~xF"
SET "ext=!ext:_error=!"
ren "%%F" "%%~nF!ext:error_=!"
)

foxidrive · Accepted Answer · 2014-01-26 08:57:21Z

1

You can do a condition like this.

IF EXIST "D:\xxx\b\" (goto thescript) else goto theerror

:thescript
#then whatever you want to run here. 
goto :EOF

:theerror
ECHO File does not exist
goto :EOF

edited Jan 26, 2014 at 8:57

foxidrive

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answered Jan 26, 2014 at 2:35

Panama Jack

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Comments

Magoo · Accepted Answer · 2014-01-26 06:26:39Z

0

@echo off
setlocal ENABLEDELAYEDEXPANSION

PUSHD d:\xxx\B 2>nul
if errorlevel 1 (
 echo required destination not found
 goto :wherever
)

for %%F in (*.*_error* *.*error_*) do ( set "ext=%%~xF"
SET "ext=!ext:_error=!"
ren "%%F" "%%~nF!ext:error_=!"
)

POPD

Best idea to use the correct character for directoryname-separators. / is used for switches.

answered Jan 26, 2014 at 6:26

Magoo

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5 Comments

user1270779 Over a year ago

once again thanks. But can I get a understanding on why 2> nul is used please?

Magoo Over a year ago

2>nul sends error messages to the nul device so they are not displayed. 1>nul or >nul sends ordinary messages to the null device. If the PUSHD can't find the directory in question, it fails, sets errorlevel to 1 and sends an error message to stderr, or device 2. 2>nul disposes of the message so it doesn't reach the console.

user1270779 Over a year ago

@echo off setlocal ENABLEDELAYEDEXPANSION PUSHD d:\xxx\B 2>nul if errorlevel 1 ( echo required destination not found goto :wherever ) for %%F in (.error* *.*error*) do ( set "ext=%%~xF" SET "ext=!ext:_error=!" ren "%%F" "%%~nF!ext:error_=!" ) POPD -----> using this script I have done it to redirect the modified file names into a log file name Renamed_logs. In the same script itself can you tell pls tell me how to purge log files for which is more than 30days

Magoo Over a year ago

Hmm - sounds reasonably easy - but really needs a new question. The "delete after 30 days" has been aswered many times so avoid that in the new title. The issue is 'do you really want 30 days?' or is 'about 30 days' (like say, 28) more representative? Date-calculation is a real pain in batch - can be done, but easier to take a shortcut if the number of days isn't critical.

Magoo Over a year ago

Then there's more mundane matters - like from what I recall, could these files be created one day and not processed for a few days - will that affect the time? Your file would contain 2 columns - check the date of the file that is in the second column? What precisely is the syntax of the logfile? Show a sample. And need to know your precise date format - for a date like Mar. 2nd - and specify that it's Mar 2nd, not Feb. 3rd. Answers on the back of a plain self-addressed envelope - er, in a new question, please. Costs nothing and saves confusion.

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