Re: Another eval $@ question

system("$command"); will never throw an exception for eval {} to catch. On error, system returns an error code, not an exception. Please refer to the documentation. (By the way, $? is set to system's error code.)

Please please please use a list for system's arguments whenever possible. It is MUCH safer since it doesn't involve the shell. (What if $pdffile contained a "?)

my @command = ('htmldoc', '--webpage', '-f', $pdffile, $htmlfile);

my $rv = system(@command);

die("Unable to execute htmldoc: $!\n")
   if $rv == -1;
die("htmldoc was unable to complete the request (Exit code = $&)\n")
   if $rv;

... success! ...
[download]

Update: Expanded code to show error handling.

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Re^2: Another eval $@ question by ysth (Canon) on Oct 13, 2006 at 05:47 UTC
`system("$command");` will never thrown an exception for `eval {}` to catch. Yes and no: `$ perl -we'$SIG{CHLD} = sub { die "whoa there" }; eval { system("true" +) }; print "!$@!"' !whoa there at -e line 1. !` [download]	[reply] [d/l] [select]
Re^3: Another eval $@ question by ambrus (Abbot) on Oct 13, 2006 at 11:17 UTC
That's a bit like exercise 8 in Re: How's your Perl? (II), isn't it?	[reply]
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