Sun Microsystems SunPCi 1.1 Guide D'installation page 20

2. Enter the following command:
% showrev -p | grep SUNWspci
This command shows the version number of the patch, the version number of the
patch that it replaced, and the name of the patch. If you do not have a patch
installed, the showrev command will produce no result; it simply returns the
system prompt. This means you do not have to remove the patch; proceed directly to
"Installing the SunPCi 1.1 Package" on page en-18.
3. Become superuser on your system.
Enter the following command:
% su
Enter the root password. The superuser prompt (for example, #) appears. If you do
not know the password, see your system administrator.
4. Type the cd command at the superuser prompt to change to the patch directory.
# cd /var/sadm/patch
5. Enter the following command to run the backoutpatch script. Substitute the
revision number of your previously installed patch for xxxxxx-xx.
# ./xxxxxx-xx/backoutpatch xxxxxx-xx
If the script executes successfully, it displays the following message:
Patch xxxxxx-xx has been backed out.
If the script returns an error message, refer to the README file included with the
patch.
en-16 SunPCi 1.1 Installation Guide • September 1999