How to detect if a file exists in login script

Checking for the existence of a file can be accomplished by using IF EXIST in a batch file called from the login script, or by using the login script ERRORLEVEL variable with a MAP statement.

 

 

Create a batch file using the "if exist" batch file command, and place it in a location accessible to the user when executing the login script.  For example:

 

TEST.BAT:

 

From the login script, call the batch file as follows:

 

#COMMAND.COM /C TEST.BAT

 

The COMMAND.COM /C will close the CMD box window automatically after it terminates.

 

 

 

ERROR_LEVEL is a special variable that can be used to tell if there have been errors encountered in the login script processing. In the following example, some users have a Home Directory configured, and others do not. The administrator wants to check for the existence of the Home Directory and if it does not exist, map another location.

 

Examples using FIND.EXE:

 

The following example checks for the existence of a file (c:\test\file.txt) on the local hard drive by attempting to find a the text "mytext" in the file, and writes "Success" or "Failure" to the login results windows depending on the result.

 

 

The following example checks for the existence of a file (c:\test\file.txt) on the local hard drive by attempting to find a certain text (mytext) in the file, and if it does not exist, copies a file from the server to the root of the C: drive on the local workstation.