Popen3-style os.execl?

[Chris Green]

Hey folks,

I'm whipping up a quick CGI to wrap a command line app and I was a bit
suprised to not find a execl-like Popen3 style object. I don't want
to bother with the shell interpreting metacharaters by constructing a
command line.

Basically, I want something that acts just like Popen3 but allows me
to specify cmd as a path + args. Does something like this exist in
the standard library? If not, it sounds like a good candidate...

Cheers,
Chris

 

[Donn Cave]

Hey folks,

I'm whipping up a quick CGI to wrap a command line app and I was a bit
suprised to not find a execl-like Popen3 style object. I don't want
to bother with the shell interpreting metacharaters by constructing a
command line.

Basically, I want something that acts just like Popen3 but allows me
to specify cmd as a path + args. Does something like this exist in
the standard library? If not, it sounds like a good candidate...

Did you try it? I think of Popen3 as something that
acts just like you describe, but also accepts a command
line. Not the best API, maybe.

Donn Cave, (e-mail address removed)

 

[Michael Hudson]

Hey folks,

I'm whipping up a quick CGI to wrap a command line app and I was a bit
suprised to not find a execl-like Popen3 style object. I don't want
to bother with the shell interpreting metacharaters by constructing a
command line.

Basically, I want something that acts just like Popen3 but allows me
to specify cmd as a path + args. Does something like this exist in
the standard library? If not, it sounds like a good candidate...

Um. Can't you pass a list to the Popen3 constructor?

Cheers,
mwh

 

[Chris Green]

Um. Can't you pass a list to the Popen3 constructor?

Well, by golly ya can. Since cmd is only ever one argument in the
docs, I've never known that you could do this.

 

[Michael Hudson]

Well, by golly ya can. Since cmd is only ever one argument in the
docs, I've never known that you could do this.

Ah, uh, right: this isn't documented. I'm not sure why... as noted,
it doesn't work on Windows, but then if you were talking about execl,
you presumably aren't that concerned.

Cheers,
mwh