Monitor log file for string

tail -fn0 logfile | \
while read line ; do
        echo "$line" | grep "pattern"
        if [ $? = 0 ]
        then
                ... do something ...
        fi
done

Source: stackoverflow.com

Similar codes

0 vote116 views1 answer
Can't install pyaudio mac
Shell/Bash
13 votes113 views1 answer
Sharp npm
Shell/Bash
0 vote107 views1 answer
Recursively delete node_modules
Shell/Bash
0 vote111 views1 answer
How add access user to docker linux
Shell/Bash
0 vote144 views1 answer
Cp all except one folder
Shell/Bash
1 vote69 views1 answer
Git orphan branch and remove all data
Shell/Bash
5 votes74 views1 answer
Terminal split screen
Shell/Bash
0 vote106 views1 answer
Libevent ubuntu install
Shell/Bash
1 vote122 views1 answer
Remove ciso umbrella
Shell/Bash
0 vote73 views1 answer
Tar create from folder
Shell/Bash