<commit_before>Useful documentation links
==========================

Useful tools
------------

* https://davvil.github.io/pdfpc/ pdfpc, PDF presenter console
* http://guake.org/ Guake, a top-down terminal for Gnome
* https://diffoscope.org/ diffoscope, in-depth comparison of files, archives, and directories
* https://searchcode.com/ free source code search engine

System administration
---------------------

* http://plusbryan.com/my-first-5-minutes-on-a-server-or-essential-security-for-linux-servers
  My First 5 Minutes On A Server; Or, Essential Security for Linux Servers
* https://www.debian.org/doc/manuals/securing-debian-howto/
  Securing Debian Manual
* https://github.com/imthenachoman/How-To-Secure-A-Linux-Server
  How To Secure A Linux Server
* http://www.mysqlperformanceblog.com/2013/12/07/linux-performance-tuning-tips-mysql/
  Linux performance tuning tips for MySQL
* https://www.monitoring-plugins.org/ The Monitoring Plugins Project
* https://www.gnu.org/software/coreutils/manual/html_node/su-invocation.html#index-fascism-2365
  Why GNU su does not support the 'wheel' group
* https://github.com/lfit/itpol/blob/master/linux-workstation-security.md
  Linux workstation security checklist (Linux Foundation)
* https://www.passwordstore.org/<commit_msg>urls: add code source search engines<commit_after>Useful documentation links
==========================

Useful tools
------------

* https://davvil.github.io/pdfpc/ pdfpc, PDF presenter console
* http://guake.org/ Guake, a top-down terminal for Gnome
* https://diffoscope.org/ diffoscope, in-depth comparison of files, archives, and directories
* https://searchcode.com/ free source code search engine
* https://codesearch.debian.net/
  Debian Code Search, Search all 130 GiB of source code within Debian
* https://grep.app/ Search across a half million git repos

System administration
---------------------

* http://plusbryan.com/my-first-5-minutes-on-a-server-or-essential-security-for-linux-servers
  My First 5 Minutes On A Server; Or, Essential Security for Linux Servers
* https://www.debian.org/doc/manuals/securing-debian-howto/
  Securing Debian Manual
* https://github.com/imthenachoman/How-To-Secure-A-Linux-Server
  How To Secure A Linux Server
* http://www.mysqlperformanceblog.com/2013/12/07/linux-performance-tuning-tips-mysql/
  Linux performance tuning tips for MySQL
* https://www.monitoring-plugins.org/ The Monitoring Plugins Project
* https://www.gnu.org/software/coreutils/manual/html_node/su-invocation.html#index-fascism-2365
  Why GNU su does not support the 'wheel' group
* https://github.com/lfit/itpol/blob/master/linux-workstation-security.md
  Linux workstation security checklist (Linux Foundation)
* https://www.passwordstore.org/
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