in reply to Inappropriate ioctl for device error on system call

Problem solved. Enscript's return status is more than simply zero or not zero:
RETURN VALUE
 Enscript  returns  value 1 to the shell if any errors were 
encountered. On successfull termination, the return code is
constucted from the following flags:

       0       no errors or warnings

       2       some lines were truncated or wrapped

       4       some characters were missing from the used fonts

       8       some characters were unprintable

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Would something like
system("/bin/somecommand") < 9 or die "Somecommand failed $!, $?";

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Work?

Neil Watson
watson-wilson.ca

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Re^2: Inappropriate ioctl for device error on system call
by sgifford (Prior) on Dec 20, 2006 at 06:41 UTC
    The basic idea is right, but $! won't be set by the command exiting with a nonzero exit status (t will be left at whatever the last error happened to be), and $? is the actual exit value times 256, for a normal exit. See system and $! variable for more details.

    Here's an example to try out to see what I mean: 

    perl -e 'unlink("nosuchfile"); system("sh","-c","exit 1") == 0 
    or die "Err: $!,$?"'
Err: No such file or directory,256 at -e line 1.

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    --
    sgifford's Web page
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