|-||the Bourne shell is never implicitly invoked: saves a stray exec(), and bypasses those nasty shell quoting problems.|
|-||cheaper to run than open3().|
|-||augmented processing of arguments, to allow for overriding arg (eg. initiating a login shell).|
If $debug is set, on-the fly diagnostics will be reported about how much data is being read.
Provides for convenience, a routine exit_status() to break out the exit value into separate scalars, straight from perlvar(1):
|-||the exit value of the subprocess|
|-||which signal, if any, the process died from|
|-||reports whether there was a core dump.|
These are equivalent:
my @args = ( /bin/sh, -x, -c, echo $0 );
my @args = ( path => /bin/sh, args => [ -c, echo $0 ] );
To override arg, pass in a arrayref for the first argument, or use the arg0 named parameter. Contrast the prior argument lists with these below:
my @args = ( [/bin/sh, -sh], -c, echo $0 );
my @args = ( path => /bin/sh, args => [-c, echo $0],
arg0 => -sh );
Obviously, the returned scalars can be quite large, depending on the nature of the program being run. In the future, I intend to introduce options to allow for temporary file handles, but for now, be aware of the potential resource usage.
Although Ive been using this module for literally years now personally, consider it lightly tested, until I get feedback from the public at large. (Treat this as a hint to tell me that youre using it. :)
Have at it.
Brian Reichert <email@example.com>
|perl v5.20.3||SYSTEM2 (3)||2005-01-20|