There are several simple commands to show what users are logged a Linux systems….

To searach for files larger than 100mb (approx.): find / -type f -size +100000k

Under most configurations, you must be logged on as “root” to make this change. You can log on locally (physically at the Linux box) as root. However, if you must perform this remotely (over a network or the Internet), you need to first log on to the machine under a user that will allow you…