More Deep Discovery on your Linux Server With /proc
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Last month I looked at some of the interesting data you can get out of /proc/. But /proc isn't just for getting information out of the system and into convenient text form. You can also use it to put information into the system, and thereby change it. The sys/ directory, which is where kernel variable information is kept, is where most of the things you might want to alter live. Changes made here will take effect immediately; no need to reboot. A real boon for working sysadmins! Note that you'll need appropriate (root) privileges to change these values. See here for a discussion of using sudo with pipes.
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