Unquoted string "dev" may clash with future reserved word at ./nelson.
+pl line 15.
Unquoted string "null" may clash with future reserved word at ./nelson
+.pl line 15.
...
Argument "dev" isn't numeric in division (/) at ./nelson.pl line 15, <
+ARGUMENTS> line 1.
Argument "" isn't numeric in division (/) at ./nelson.pl line 15, <ARG
+UMENTS> line 1.
Illegal division by zero at ./nelson.pl line 15, <ARGUMENTS> line 1.

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All of the above are generated by the /dev/null you have marooned outside the backticks. Are you attempting to redirect the output of grep?

Use of uninitialized value in scalar assignment at ./nelson.pl line 8,
+ <ARGUMENTS> line 1.
Use of uninitialized value in scalar assignment at ./nelson.pl line 9,
+ <ARGUMENTS> line 1.

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You don't seem to have initialised $file or $argument anywhere before trying to use them.

grep: : No such file or directory

I don't think you should be escaping the variables inside the backticks. They need to interpolate.

I hope these points help you move forward.

Cheers,

JohnGG

In reply to Re^3: Perl backticks and GREP? by johngg
in thread Perl backticks and GREP? by symgryph

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