<info> <name>Phil Bull</name> <email>philbull@gmail.com</email> <years>2011</years> <name>Michael Hill</name> <email>mdhillca@gmail.com</email> <years>2014</years> <desc>Information in System Monitor can also be found using command line tools.</desc> </info> <comment> Phil Bull

Briefly list a few useful command line tools which can provide some of the same information as System Monitor. Don't go into too much detail.

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Most of the information displayed by System Monitor can also be obtained using these command line tools.

<cmd>top</cmd> | provides a continually updated list of running processes, and allows you to manipulate them.
<cmd>lsof</cmd> | provides a list of open files and the processes that opened them.
<cmd>free -m</cmd> | shows you how much memory is available.
<cmd>vmstat</cmd> | provides information about current virtual memory use.
<cmd>df -h</cmd> | displays available disk space on mounted filesystems.
<cmd>pmap</cmd> | displays the memory map of a process.