I have a historical set of log files, that have the source IP at the end, rather than at the beginning. Due the the user agents being a string that can contain any character (spaces tabs, anything) , there is no set field count for the last field. I came up with the following shell script to convert them, but it is painfully slow, and thought converting it to perl might make it faster, but I'm stuck as all the examples in perl I've found expect a known number of fields. 
while read line
    do
    SOURCEIP=`echo $line| sed 's/.*" "//g'|sed 's/"//g'`
    MEAT=`echo $line|cut -d" " -f2-`
    echo $SOURCEIP $MEAT >>${LOG}.txt
done<$LOG

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can anyone suggest a way of doing this in perl?

In reply to reformat log files by Anonymous Monk

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