Show the processes for all users (a), displaying the process's user/ownser (u), and the processes that are not attached to a terminal (x):
$ ps aux
Display the full listing of all processes (useful for finding underisable processes):
$ ps ef
Display a specific pricess in more details, by displaying the files and ports associated with that process.
$ lsof -p
Display processes running form or acessing files that have been unlinked:
$ lsof +L1
$ find / -uid 0
Display all MAC to IP address mapping of the system (useful for finding addresses of systems that are not part of the network.
$ arp -a
Others: uptime, free, df.
$ strings /tmp/mem.dump | grep BOOT_
$ BOOT_IMAGE=/vmlinuz-3.5.0-23-generic
Tools to test a PDF file:
- pdfid
- pdf-parser