Date: Wed, 30 Jun 2004 09:51:10 -0700 From: Drew Tomlinson <drew@mykitchentable.net> To: FreeBSD Questions <freebsd-questions@freebsd.org> Subject: Perl Syntax Message-ID: <40E2EF7E.3000901@mykitchentable.net>
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I'm using perl 5.8.4 on a 4.9 machine. I want to add code a perl script
to check for value passed from command line. If it is null, I want to
exit with an error message.
First I tried this and got "Use of uninitialized value in string eq at
./test.pl line 20."
if ($ARGV[0] eq "") {
print "You must include the file name.";
exit 1;
}
Next I tried this but get "Use of uninitialized value in length at
./test.pl line 20."
if (length ($ARGV[0]) = "0") {
print "You must include the file name.";
exit 1;
}
I've searched the web and all examples that I've found indicate that I'm
doing things correctly but obviously I'm not. What am I doing wrong?
Thanks,
Drew
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