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If iTunes XML is anything like Rhythmbox XML, there will be attributes which include systime of when the file was imported. If I were you, I would create a hash while parsing/printing the first XML...

shortname=`echo ${textArray[$i]} | awk '{print $1}'`

don't need the split, actually...

perl -e 'print "Enter word to reverse:\n";chomp(my $in=<STDIN>);print reverse($in)."\n";'

perl -e 'print "Enter word to reverse:\n";chomp(my $in=<STDIN>);print reverse(split'',$in)."\n";'

You would just be using awk rather than head.

grep "$3" `awk 'NR=='$i temp.txt ` > temp2.txt

Though you could have used head anyhow:
`head -$i temp.txt|tail -1`


If you are simply looping...

awk 'NR=='$i temp.txt

Create public SSH keys on all remote machines then add those keys to the authorized_keys2 file on the host you intend to run your script. This will allow for passwordless SSH connection.

You...