For the code:
$path = "/main/lvs/";<br />
open(CELLFILE,"./instList.in") || die "Can't open cell list file: $!";
+<br />
while (<CELLFILE>) {<br /> 
$cell = $_;<br />
 chomp($cell);<br />
 system("rm ./instLvsOut/passfail.tmp");<br />
 open(PASSFAIL,">>./instLvsOut/passfail.tmp");<br />
 system("ls $path | grep $cell.>./instLvsOut/passfail.tmp");<br />
 print "$cell:\n";<br />
 @fp0 =<PASSFAIL>;<br />
 $fp = $fp0[0];<br />
 chomp($fp);<br />
 system("cat ./instLvsOut/passfail.tmp");<br />
 print "fp is $fp\n";<br />
 }

[download]

I am getting the following error:
Use of uninitialized value in concatenation (.) or string at instLvsReport.pl line 14
I have already defined $fp by commands "@fp0 =<PASSFAIL>;" and "$fp = $fp0[0];". The command "system("cat ./instLvsOut/passfail.tmp");" properly prints out the content of <PASSFAIL>. Any idea why still I get this error? Please help.

In reply to "Use of uninitialized value" even though the value is defined by mandrake00

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