Uninstalling Liberty interim fixes from IBM i operating systems using the command line

You can use the IBM® Installation Manager command-line function to remove interim fixes from WebSphere® Application Server Liberty.

About this task

Use this procedure whenever you want to remove an interim fix from your system using the command line.

Tip: You can also uninstall interim fixes using silent response files with Installation Manager. For information on creating and using response files, read Installing Liberty fix packs on IBM i operating systems using response files and the IBM Installation Manager product documentation.

Sign on to the IBM i system with a user profile that has *ALLOBJ and *SECADM special authorities.
Stop all servers and applications on the WebSphere Application Server Liberty installation.
On a CL command line, run the STRQSH command to start the Qshell command shell.
Make sure that the umask is set to 022.
To verify the umask setting, issue the following command:
```
umask
```
To set the umask setting to 022, issue the following command:
```
umask 022
```
Change to the Installation_Manager_binaries/eclipse/tools directory, where Installation_Manager_binaries is the installation root directory for the Installation Manager.

On IBM i systems, the root directory for the Installation Manager is /QIBM/ProdData/InstallationManager.

Uninstall the interim fix:

./imcl uninstall interim_fix_name
  -installationDirectory offering_installation_location

Optional: List all installed packages to verify the uninstallation.
```
./imcl listInstalledPackages -long
```