Chapter 8. Put on the Monitor's Cap

In this chapter, we will cover:

• Monitoring disk usage

• Calculating the execution time for a command

• Collecting information about logged in users, boot logs, and boot failures

• Listing the top 10 CPU consuming processes in an hour

• Monitoring command outputs with watch

• Logging access to files and directories

• Logfile management with logrotate

• Logging with syslog

• Monitoring user logins to find intruders

• Remote disk usage health monitor

• Finding out active user hours on a system

• Measuring and optimizing power usage

• Monitoring disk activity

• Checking disks and filesystems for errors