Perl Error, can anyone explain what this means?

[Nutthick]

I'm getting an error in my Apache log whenever I call specific a script. The script uses the following notation to fire off a bash script;

qx[SomeBashScript];

the error that keeps appearing is as follows

file mcoputils.cc: line 238 (static std::string Arts::MCOPUtils::mcopDirectory()): assertion failed: (home != 0)

Does anyone know what this means or how I can stop it? If it isn't doing any harm is there a way to filter it out of my log file, as it's filling it up.

Thanks

 

[mbrooks]

If you are executing a bash script using perl do

my $script_out = `SomeBashScript.sh`;

M. Brooks

http://mbrooks.info

 

[Nutthick]

hi mbrooks

Surely that is just going to assign the string 'SomeBashScript.sh' to a variable called $script_out.

If there is another way to call a bash script, I'd be interested to know.

Thanks

 

[mbrooks]

Calling an external script you can either use a system() call or the `backtick` method.

M. Brooks

http://mbrooks.info

 

[Kirsle]

Surely that is just going to assign the string 'SomeBashScript.sh' to a variable called $script_out.

For clarification, backticks execute system commands. If it had quotes or single quotes, then it would set $script_out to the string 'SomeBashScript.sh'

Backtick      `...`
Quotes        "..."
Single Quotes '...'

 

[ishnid]

qx// and backticks do exactly the same thing. That won't make a difference to the OP's problem. I'm not sure what the problem actually *is* though.

 

[Nutthick]

My mistake, I thought they were single quotes.

Any ideas on the original post?

 

[stevexff]

If you run the bash script on its own, do you still get the problem? If the unwanted output is being written to STDERR, one possibility is to run

qx{bashscript 2>/dev/null};

provided you are on *nix, but it will throw away any and all error messages, not just the one above.

Steve

[small]"Every program can be reduced by one instruction, and every program has at least one bug. Therefore, any program can be reduced to one instruction which doesn't work." (Object:erlDesignPatterns)[/small]