What would cause a perl script to behave differently in different directories on one system? The system is running RedHat 3.4.3-9, and perl version 5.8.5.

The following perl script runs correctly when run from /home/test. After copying this script to /var/www/cgi-bin, it runs wrong: 1) Its stdout is directed somewhere other than back to the user, and 2)It does not receive the output from the call to pread.

Here is the perl script: 

#!/usr/bin/perl

my @cc = ();
@cc = `pread cm 98`;

print "Content-type: text/html\n\n";
print <<HTML;
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
     "http://www.w3.org/TR/html4/loose.dtd">
<HTML lang='en'>
<HEAD>
        <TITLE> Hello World Status </TITLE>
</HEAD>
<BODY>
  hello world: $cc[0]
</BODY>
</HTML>
HTML
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

When run from the directory /home/test as 
[xyz@daystar test]$ ./tst.pl
the output is correct:

Content-type: text/html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
     "http://www.w3.org/TR/html4/loose.dtd">
<HTML lang='en'>
<HEAD>
        <TITLE> Hello World Status </TITLE>
</HEAD>
<BODY>
  hello world: RETAIL WEBSALE

</BODY>
</HTML>
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

There is no output when run from directory /var/www/cgi-bin as
[xyz@daystar test]$ ./tst.pl
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _

However, when run and piping output to 'more' using the command
[xyz@daystar test]$ ./tst.pl | more
the output is:

Content-type: text/html
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
     "http://www.w3.org/TR/html4/loose.dtd">
<HTML lang='en'>
<HEAD>
        <TITLE> Hello World Status </TITLE>
</HEAD>
<BODY>
  hello world:

</BODY>
</HTML>

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In reply to perl stdout and backtick execute by solarity

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