On 9/25/2013 2:38 PM, Renato wrote:
Hi, all.
I am a very begginer in PERL starting today in this mailing list! :-)
I will try to work especially with Bioinformatics.
I am trying to verify the existence of a file in PERL; however, is
seems not to work. It always returns "The file $file_seqs does not
exist!!!".
Do you know where I am making a mistake?
<code>
#!/usr/bin/perl
use strict;
my $file_seqs;
$file_seqs = $ARGV[0];
if (!-e $file_seqs) {
print "The file $file_seqs does not exist!!! \n";
exit(0);
}
else {
print "The file $file_seqs exist!!! \n";
}
</code>
Hi Renato,
Welcome to Perl.
Your code looks fine and it works for me.
Try entering the full path to the file you are checking for.
You could reduce
my $file_seqs;
$file_seqs = $ARGV[0];
to just
my $file_seqs = $ARGV[0];
Mike Flannigan
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