Re^2: detecting non-zero exit code when opening from a pipe

Hmm... didn't quite trap at the open statement.

>./errorcheck.pl notexists.gz
gzip: notexists.gz: No such file or directory
Can't close gunzip:
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I guess the "Can't close gunzip" occurred due to a broken pipe?

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Re^3: detecting non-zero exit code when opening from a pipe by ikegami (Patriarch) on Oct 21, 2010 at 22:49 UTC
Of course it didn't trap at the open statement. The error hasn't happened yet. As for the incorrect error message, the code should be: `... if (!close($fh)) { $! and die("Can't close gunzip: $!\n"); ($? & 0x7F) and die("gunzip died from signal ", ($? & 0x7F), "\n"); ($? >> 8) and die("gunzip exited with error ", ($? >> 8), "\n"); }` [download] `gzip: notexists.gz: No such file or directory gunzip exited with error 1` [download]	[reply] [d/l] [select]

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Re^3: detecting non-zero exit code when opening from a pipe
by ikegami (Patriarch) on Oct 21, 2010 at 22:49 UTC

Of course it didn't trap at the open statement. The error hasn't happened yet. As for the incorrect error message, the code should be:

...

if (!close($fh)) {
   $!          and die("Can't close gunzip: $!\n");
   ($? & 0x7F) and die("gunzip died from signal ", ($? & 0x7F), "\n");
   ($? >> 8)   and die("gunzip exited with error ", ($? >> 8), "\n");
}
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gzip: notexists.gz: No such file or directory
gunzip exited with error 1
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