https://www.saruman.biz/saruwiki/index.php?action=history&feed=atom&title=System_boot_procedure System boot procedure - Revision history 2026-05-13T00:11:00Z Revision history for this page on the wiki MediaWiki 1.40.0 https://www.saruman.biz/saruwiki/index.php?title=System_boot_procedure&diff=1512&oldid=prev Saruman!: Started system boot with explaining sysctl invocation 2008-06-08T13:15:18Z <p>Started system boot with explaining sysctl invocation</p> <p><b>New page</b></p><div>==Debian System Boot==<br /> <br /> When booting a Debian system, the scripts referenced in &#039;&#039;/etc/rcS.d&#039;&#039; always get executed. One of these scripts is referenced by the entry &#039;&#039;/etc/rcS.d/S30procps.sh&#039;&#039;; this entry is a symlink to the script &#039;&#039;/etc/init.d/procps.sh&#039;&#039;, and it sets up the &#039;&#039;/proc/sys&#039;&#039; virtual filesystem early on in the boot process of your Debian machine. This matters to us, system administrators, because if the script is invoked with &quot;start&quot;, it runs the following command (a.o.):<br /> sysctl -q -p /etc/procsys.conf<br /> (well actually the last parameter is not included in the command, but since it&#039;s the default value for the location and name of the parameter file, it&#039;s totally equivalent).<br /> <br /> This matters to us, since there are a lot of things we can - and want to! - do with the &#039;&#039;/proc/sys&#039;&#039; filesystem. For these, see our separate page of [[Procsys recommendations|/proc/sys recommendations]]. Furthermore, remember that you can reinitialize the &#039;&#039;/proc/sys&#039;&#039; filesystem with the command<br /> /etc/init.d/procps.sh start<br /> (although just running &#039;&#039;sysctl -p&#039;&#039; works the same if you just want to effectuate edits to &#039;&#039;/etc/sysctl.conf&#039;&#039; :-)</div> Saruman!