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I originally had a shell script that did a grep 10 times to pull out the number of times a certain pattern occured in a file: ie...

aOccurances=`grep aPattern file|wc -l`
bOccurances=`grep...

I have a shell script I want to write in perl, and I want to do the following in perl:

VAR=xdirect_`date +%Y-%b-%d`*

Any ideas how on how to do this?

What's the best way to find out how much memory is being used/available? I tried using free, but I didn't quite understand the output. Can someone explain it?

$ free
total used...