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sysctl
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<p>sysctl is a software mechanism in some <a href="/facts/Unix-like/YAKrAxzd">Unix-like</a> operating systems that reads and modifies the attributes of the system <a href="/facts/Kernel_(operating_system)/uEj4U3Rz">kernel</a> such as its version number, maximum limits, and security settings. It is available both as a <a href="/facts/System_call/NW44AFJr">system call</a> for compiled programs, and an administrator command for interactive use and scripting. <a href="/facts/Linux/9FvCKSTq">Linux</a> additionally exposes sysctl as a <a href="/facts/Virtual_file_system/lRI31T4T">virtual file system</a>. </p>