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

2 votes94 views2 answers
Linux arduino permission denied
Shell/Bash
0 vote99 views1 answer
Yum install firefox
Shell/Bash
16 votes106 views6 answers
Ubuntu install tar.xz
Shell/Bash
1 vote107 views1 answer
Where is my .git config mac
Shell/Bash
-1 vote74 views1 answer
Ubuntu permission deneied
Shell/Bash
2 votes105 views2 answers
Helmfile install ubuntu
Shell/Bash
0 vote99 views1 answer
Another apache web server is running
Shell/Bash
0 vote100 views2 answers
Code in terminal
Shell/Bash
1 vote99 views1 answer
Grep list command
Shell/Bash
-2 votes107 views1 answer
Git clone brand
Shell/Bash