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If the #! line isn't correct then your code will be passed to /bin/sh, not Perl

No.

$ a.pl sh: ./a.pl: usr/bin/perl: bad interpreter: No such file or directory

and that's what produced the error messages.

No. If the error messages originated from sh, they would look like

$ . a.pl sh: =: command not found sh: ./a.pl: line 3: syntax error near unexpected token `{' sh: ./a.pl: line 3: `if ($count <= 20) {'

or (requires changing shebang to #!/bin/sh)

$ a.pl ./a.pl: line 2: =: command not found ./a.pl: line 3: syntax error near unexpected token `{' ./a.pl: line 3: `if ($count <= 20) {'

The error the OP gave is indeed from perl.


In reply to Re^4: It LOOKS right... by ikegami
in thread It LOOKS right... by BIOM01

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