On a fresh install, why does Apache have three config files – srm.conf, access.conf and httpd.conf? – The first two are remnants from the NCSA times, and generally you should be ok if you delete the first two, and stick with httpd.conf. What’s the command to stop Apache? – kill the specific process that httpd [...]

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What’s in the file /etc/ttys? – Configuration for virtual consoles for the startup. By default FreeBSD has 8 virtual consoles. You’re told that the permissions of a file are 645. Quick, how do you calculate what it means? – The permissions value are always 4 for read, 2 for write, 1 for execute. The three [...]

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Difference between layer 2 and layer 3 devices? What is VLAN? What is the subnet for a class C network? Are you familiar with automounter? Have you configured an NIS server/client? Have your configured a NFS server? Windows and Linux interoperability how to? What is RAID 1?

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How do you show the currently running queries? – SHOW FULL PROCESSLIST; How do you kill a MySQL query? – See the ID of it from the question above, then KILL id. You can separate multiple IDs by space. I need to find out how many client connections were aborted by MySQL server. – It’s [...]

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