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log Rotation
Log File Rotation
Bash
# First Parameter is the log file
# Second parameter is the log number
rotate_log ()
{
log=$1;
num=5;
if [ -n "$2" ]; then
num=$2
fi
if [ -f "$log" ]; then # rotate logs
while [ $num -gt 1 ]; do
prev=`expr $num - 1`
[ -f "$log.$prev" ] && mv -f "$log.$prev" "$log.$num"
num=$prev
done
mv -f "$log" "$log.$num";
fi
}