The "lsup" Command

If an update is unavailable in your control panel (or you just prefer the command line), you can update LSWS from the terminal.

The lsup command is a simple way to update LiteSpeed Web Server from the command line, allowing the possibility of upgrading hordes of LSWS installations with a single command.

The lsup command is located at $SERVER_ROOT/admin/misc/ In most CentOS installations, the command is thus:


Running the basic lsup command will automatically upgrade your installation of LiteSpeed Web Server to the latest release. There are also options for customizing the command listed below.

  • -f: If you already have the most recent stable version installed, the basic lsup command will abort. The -f option forces lsup to install the latest edge build.
  • -v: You can control what version you install with the -v option followed by a version number. (For example: ./ -v 5.3.4) This will allow you to downgrade to older versions if you run into a bug.
  • -b: Designates a build number. All versions start from build 0. To view what build you are currently using, view /usr/local/lsws/autoupdate/build. Will automatically upgrade to the latest build of the designated version if -b is not set. (Only available for versions 5.0 and higher.)

NOTE: for -v and -b, you can look up a version/build number here if you need to.

Force an update to version 5.3.4:

/usr/local/lsws/admin/misc/ -f -v 5.3.4

Force an update to version 5.3.4 build 4:

/usr/local/lsws/admin/misc/ -f -v 5.3.4 -b 4

Starting from version 5.3.7 build 4, LiteSpeed Web Server introduces tiers to meet your auto upgrade requirements through the script. This will make your server more stable during the upgrade, while still keeping edge users in mind. Here's how it works:

  • The /usr/local/lsws/autoupdate/follow_stable marker will be set automatically when you upgrade to 5.3.7 build 4 or a later version.
  • If you want to set up a cron job, please use without any parameters instead of using -f.
  • without a parameter will follow the Stable Tier if the follow_stable marker is set, and the Stable Tier number is controlled.
  • -f will install the edge build, which is the latest build available, and it will stop following the Stable Tier by removing the follow_stable marker.
  • If a particular version is forced, such as with -f -v <version>, the command without parameters will stop following the Stable Tier, and will do nothing.
  • To start following the Stable Tier again, you can manually create a follow_stable marker by running touch /usr/local/lsws/autoupdate/follow_stable.
  • Why is follow_stable important? When you install an edge build, or downgrade to an older version, you certainly do not want in your daily cron job to change the version to the Stable Tier automatically during the test. In these situations, unsetting follow_stable will make do nothing in a cron job.
  • Please be aware that the new powerful Stable/Edge Tier system is only available in for version 5.3.7 build 4 and later. If you force a downgrade to an earlier version/build, it will not have the above feature.

You may get a 404 error when tring to downgrade to a specific legacy version, such as 5.2.7, using this command:

/usr/local/lsws/admin/misc/ -f -v 5.2.7 

or maybe this:


This is because only the latest version for a branch are kept available. For example, if the latest version for the 5.2.x branch v5.2.8, you can only download/downgrade to 5.2.8. You cannot access any lower version, like 5.2.7.

For owned licenses, if you have a license that cannot use the latest version for the current branch, then if you need to downgrade, your only options is to download the latest version of the previous branch. In this example, that would be v5.1.17. If you have no plans to purchase the yearly add-on, please always keep your own archive of downloaded versions in case you need to perform a reinstallation.

  • Admin
  • Last modified: 2020/06/22 19:07
  • by Lisa Clarke