Free Knowledge Resources


Linux Manual Pages


Free Software * Books

Source Code

Free Media

Linux

systemd-sysctl(8)


NAME

   systemd-sysctl.service, systemd-sysctl - Configure kernel parameters at
   boot

SYNOPSIS

   /lib/systemd/systemd-sysctl [OPTIONS...] [CONFIGFILE...]

   systemd-sysctl.service

DESCRIPTION

   systemd-sysctl.service is an early boot service that configures
   sysctl(8) kernel parameters by invoking /lib/systemd/systemd-sysctl.

   When invoked with no arguments, /lib/systemd/systemd-sysctl applies all
   directives from configuration files listed in sysctl.d(5). If one or
   more filenames are passed on the command line, only the directives in
   these files are applied.

   In addition, --prefix= option may be used to limit which sysctl
   settings are applied.

   See sysctl.d(5) for information about the configuration of sysctl
   settings. After sysctl configuration is changed on disk, it must be
   written to the files in /proc/sys before it takes effect. It is
   possible to update specific settings, or simply to reload all
   configuration, see Examples below.

OPTIONS

   --prefix=
       Only apply rules with the specified prefix.

   -h, --help
       Print a short help text and exit.

   --version
       Print a short version string and exit.

EXAMPLES

   Example 1. Reset all sysctl settings

       systemctl restart systemd-sysctl

   Example 2. View coredump handler configuration

       # sysctl kernel.core_pattern
       kernel.core_pattern = |/libexec/abrt-hook-ccpp %s %c %p %u %g %t %P %I

   Example 3. Update coredump handler configuration

       # /lib/systemd/systemd-sysctl --prefix kernel.core_pattern

   This searches all the directories listed in sysctl.d(5) for
   configuration files and writes /proc/sys/kernel/core_pattern.

   Example 4. Update coredump handler configuration according to a
   specific file

       # /lib/systemd/systemd-sysctl 50-coredump.conf

   This applies all the settings found in 50-coredump.conf. Either
   /etc/sysctl.d/50-coredump.conf, or /run/sysctl.d/50-coredump.conf, or
   /usr/lib/sysctl.d/50-coredump.conf will be used, in the order of
   preference.

   See sysctl(8) for various ways to directly apply sysctl settings.

SEE ALSO

   systemd(1), sysctl.d(5), sysctl(8),



Opportunity


Personal Opportunity - Free software gives you access to billions of dollars of software at no cost. Use this software for your business, personal use or to develop a profitable skill. Access to source code provides access to a level of capabilities/information that companies protect though copyrights. Open source is a core component of the Internet and it is available to you. Leverage the billions of dollars in resources and capabilities to build a career, establish a business or change the world. The potential is endless for those who understand the opportunity.

Business Opportunity - Goldman Sachs, IBM and countless large corporations are leveraging open source to reduce costs, develop products and increase their bottom lines. Learn what these companies know about open source and how open source can give you the advantage.



Free Software


Free Software provides computer programs and capabilities at no cost but more importantly, it provides the freedom to run, edit, contribute to, and share the software. The importance of free software is a matter of access, not price. Software at no cost is a benefit but ownership rights to the software and source code is far more significant.

Free Office Software - The Libre Office suite provides top desktop productivity tools for free. This includes, a word processor, spreadsheet, presentation engine, drawing and flowcharting, database and math applications. Libre Office is available for Linux or Windows.



Free Books


The Free Books Library is a collection of thousands of the most popular public domain books in an online readable format. The collection includes great classical literature and more recent works where the U.S. copyright has expired. These books are yours to read and use without restrictions.

Source Code - Want to change a program or know how it works? Open Source provides the source code for its programs so that anyone can use, modify or learn how to write those programs themselves. Visit the GNU source code repositories to download the source.



Education


Study at Harvard, Stanford or MIT - Open edX provides free online courses from Harvard, MIT, Columbia, UC Berkeley and other top Universities. Hundreds of courses for almost all major subjects and course levels. Open edx also offers some paid courses and selected certifications.

Linux Manual Pages - A man or manual page is a form of software documentation found on Linux/Unix operating systems. Topics covered include computer programs (including library and system calls), formal standards and conventions, and even abstract concepts.


birds banner