I'm a big fan of opening the Command Prompt in Windows and entering a single command line to run a script e.g. 
C:\WINDOWS>perl c:\mydocu~1\david\somescript.pl

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Now, problem with this is that it sets as the current working directory the directory (e.g. C:/WINDOWS/) I launched the command from, rather than the directory (e.g. C:/My Documents/David/) where the script resides, which I would like to have on hand in order to play with other files that live in its neighbourhood. I guess I'd also like to have fully portable code that's prepared for any reasonable method of launch, and so I think this is an issue that can't be resolved just by changing my own behaviour. Previously I was using Windows 98SE and I'd gone some way to solving the problem by stripping the script path from 
$ENV{"CMDLINE"}

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... but now I'm using Windows XP, which don't got 
$ENV{"CMDLINE"}

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or anything similar! Is there any consistent way of getting the full shell command line, or more generally of getting a script to find itself on the file system? Also, what issues does this have for portability to non-Windows OSs?

In reply to Having a script find itself on the file system in Windows XP and other OSs by David Catchpole

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