Greps the contents of all log files and checks them for attempts to exploit log4j (log4shell). It is also possible to check for log4j packages:
ps aux | egrep '[l]og4j'
find / -iname "log4j*"
lsof | grep log4j
Command Reference:
Command:
egrep -i -r '\$\{jndi:(ldap[s]?|rmi)://[^\n]+' /var/log