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Re^3: "close" failing

by duff (Parson)
on May 31, 2006 at 14:55 UTC ( [id://552809]=note: print w/replies, xml ) Need Help??


in reply to Re^2: "close" failing
in thread "close" failing

The return value of a piped open tells you if the fork succeeded or not, the return value of close tells you about the execution status of the program in the pipe. So, if $ENV{PATH} is set such that perl can't find the program to be piped to/from, close will return a false value (perl was able to successfully fork, but not execute the piped command).

duff

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Re^4: "close" failing
by jdhedden (Deacon) on May 31, 2006 at 15:26 UTC
    I tried this, and it doesn't work as you described: If Perl can't find the program to be piped to, the open command fails.
    Remember: There's always one more bug.
[reply]
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Re^4: "close" failing
by vek (Prior) on May 31, 2006 at 17:21 UTC

    I'm not entirely sure that's correct. For my test code, if the program cannot be found, open will not succeed. 

    #!/usr/bin/perl -w

use strict;

open(BAD, "/no-such-path/not_here.sh |") || die "Died with: $!\n";
close(BAD);

    [download]
    Does in fact die on open with Died with: No such file or directory.

    -- vek --
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