ASCII tools can be life savers when they provide the only access you have to a misbehaving server. However, once you're on the node what do you do? In this article, we look at stat-like tools: vmstat, dstat, and mpstat.
http://www.linuxpromagazine.com/Issues/2014/169/Stat-like-Tools-for-Admins
In Linux, everything is a file – directories, devices, pipes – so lsof (list open files) reveals what's happening on your system.
http://www.linuxpromagazine.com/Issues/2014/168/lsof
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