#!/bin/sh

# Same as below
# $ tail -f /usr/share/tomcat7/logs/catalina.out | perl -pe 's/(WARN|ERROR|SEVERE)/\e[1;31;43m$&\e[0m/g'
# $ tail -f file | perl -pe 's/keyword/\e[1;31;43m$&\e[0m/g'

FLE="$1"

if [ "$FLE" ]; then
    tail -f "$FLE" | perl -pe 's/(WARN|ERROR|SEVERE)/\e[1;31;43m$&\e[0m/g'
else
    echo "[Usage] tails <file>"
fi