apache - perl/Cgi script with apache2 -

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i have installed apache2 on unbuntu . working. want configure run perl/cgi scripts. made directory /var/cgi-bin scripts. made simple perl file echo.pl having following codes. 

#!/usr/bin/perl  use strict; use warnings;  print qq(content-type: text/plain\n\n);  print "hi\n";

made executable.

chmod +x /var/cgi-bin/echo.pl

executed it

 /var/cgi-bin/echo.pl

but showed following error.

/var/cgi-bin/echo.pl: line 2: use: command not found /var/cgi-bin/echo.pl: line 3: use: command not found /var/cgi-bin/echo.pl: line 5: syntax error near unexpected token `(' /var/cgi-bin/echo.pl: line 5: ` print qq(content-type: text/plain\n\n);'

i cant find error. please help.


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