{"id":303,"date":"2008-11-17T15:05:10","date_gmt":"2008-11-17T19:05:10","guid":{"rendered":"http:\/\/www.eyoungwon.com\/journal\/?p=303"},"modified":"2008-11-17T15:05:10","modified_gmt":"2008-11-17T19:05:10","slug":"what-are-linux-runlevels","status":"publish","type":"post","link":"https:\/\/eyoungwon.com\/journal\/what-are-linux-runlevels\/","title":{"rendered":"What Are Linux Runlevels?"},"content":{"rendered":"<p>Runlevel 0: Halt System &#8211; To shutdown the system<br \/>\nRunlevel 1: Single user mode<br \/>\nRunlevel 2: Basic multi user mode without NFS<br \/>\nRunlevel 3: Full multi user mode (text based)<br \/>\nRunlevel 4: unused<br \/>\nRunlevel 5: Multi user mode with Graphical User Interface<br \/>\nRunlevel 6: Reboot System<\/p>\n<p><strong>Runlevels 1 and 2<\/strong> are generally used for debugging purposed only, and are not used during normal operations. Most desktop linux distributions boot into runlevel 5, which starts up the Graphical Login Prompt. This allows the user to use the system with X-Windows server enabled. Most servers boot into runlevel 3, which starts the text based login prompt.<\/p>\n<p>Linux runlevels can be changed on the fly using the init tool. If you want to switch from text based operations to the Graphical Interface, you just have to type in &#8216;telinit 5&#8217; in the root prompt. This will bring up the Graphical Interface in your system.<\/p>\n<p>Each runlevel can be configured by the system administrator. The &#8220;\/etc\/inittab&#8221; file has information on which runlevel to start the system at and lists the processes to be run at each runlevel.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Runlevel 0: Halt System &#8211; To shutdown the system Runlevel 1: Single user mode Runlevel 2: Basic multi user mode without NFS Runlevel 3: Full multi user mode (text based) Runlevel 4: unused Runlevel 5: Multi user mode with Graphical User Interface Runlevel 6: Reboot System Runlevels 1 and 2 are generally used for debugging [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[114],"tags":[117,115,116],"class_list":["post-303","post","type-post","status-publish","format-standard","hentry","category-linuxunix","tag-init","tag-linux","tag-runlevels"],"_links":{"self":[{"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/posts\/303","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/comments?post=303"}],"version-history":[{"count":1,"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/posts\/303\/revisions"}],"predecessor-version":[{"id":304,"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/posts\/303\/revisions\/304"}],"wp:attachment":[{"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/media?parent=303"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/categories?post=303"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/eyoungwon.com\/journal\/wp-json\/wp\/v2\/tags?post=303"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}