Re^2: POE::Wheel::Run & Tk Problems

Your post piqued my curiosity. I haven't used Windows in 10 years, so I thought I'd do a little review. I started with the dir command. Evidently, DOS does have a dir command. You can see it's documentation for 95, 98, ME here.

Linux has a dir command also, but I'm not sure if all distros have it. The dir command appears to be just like ls, and it's written by the authors of ls, Richard Stallman and David MacKenzie.

Update: It works on Vista too.

Comment on Re^2: POE::Wheel::Run & Tk Problems

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Re^3: POE::Wheel::Run & Tk Problems by rcaputo (Chaplain) on Aug 05, 2009 at 06:49 UTC
Well, sure. It would be silly for an operating system to be unable to list directory contents. CMD.EXE has a built-in "dir" command, but there is no actual DIR.EXE or DIR.COM program in the version I just checked. Nevertheless, system() seems able to execute shell built-ins on Windows: `C:\>perl -wle "system('set')" ALLUSERSPROFILE=C:\Documents and Settings\All Users` [download] Whereas this sort of thing fails in UNIX: `% perl -wle 'system "set"' Can't exec "set": No such file or directory at -e line 1.` [download] `-- Rocco Caputo - http://poe.perl.org/ - irc://irc.perl.org/poe`	[reply] [d/l] [select]

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Re^3: POE::Wheel::Run & Tk Problems
by rcaputo (Chaplain) on Aug 05, 2009 at 06:49 UTC

Well, sure. It would be silly for an operating system to be unable to list directory contents. CMD.EXE has a built-in "dir" command, but there is no actual DIR.EXE or DIR.COM program in the version I just checked.

Nevertheless, system() seems able to execute shell built-ins on Windows:

C:\>perl -wle "system('set')"
ALLUSERSPROFILE=C:\Documents and Settings\All Users
[download]

% perl -wle 'system "set"'
Can't exec "set": No such file or directory at -e line 1.
[download]

-- Rocco Caputo - http://poe.perl.org/ - irc://irc.perl.org/poe

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