The compressed RPM file must first be decompressed with gunzip and can then be installed with the rpm command. This requires administration rights
(root):

# gunzip pwrcmps-lpar-rte-1.7.0-1.x86_64.rpm.gz
# 
# rpm -iv pwrcmps-lpar-rte-1.7.0-1.x86_64.rpm
Preparing packages...
pwrcmps-lpar-rte-1.7.0-1.x86_64
#

The 4 commands of the LPAR-Tool (hmc, ms, lpar and vios) are installed under /opt/pwrcmps/bin:

# ls -l /opt/pwrcmps/bin
total 104256
-rwxr-xr-x 1 root system 14065602 Sep 2 16:30 hmc
-rwxr-xr-x 1 root system 15241792 Sep 2 16:30 lpar
-rwxr-xr-x 1 root system 14832670 Sep 2 16:30 ms
-rwxr-xr-x 1 root system 9230400 Sep 2 16:30 vios
#

In addition, the files Copyright, LicenseAgreement and sample.lpar.cfg (sample configuration file)
are installed under /opt/pwrcmps/etc:

# ls -l /opt/pwrcmps/etc
total 24
-rw-r--r-- 1 root system 108 Aug 30 13:27 Copyright
-rw-r--r-- 1 root system 273 Aug 30 13:27 LicenseAgreement
-rw-r--r-- 1 root system 542 Aug 30 13:27 sample.lpar.cfg
#

The shell search path (PATH variable) should be expanded to include /opt/pwrcmps/bin. Alternatively, on systems that have /usr/local/bin in the search path, symbolic links can be created under /usr/local/bin to the commands in /opt/pwrcmps/bin:

# ln -s /opt/pwrcmps/bin/hmc /usr/local/bin/hmc
# ln -s /opt/pwrcmps/bin/ms /usr/local/bin/ms
# ln -s /opt/pwrcmps/bin/lpar /usr/local/bin/lpar
# ln -s /opt/pwrcmps/bin/vios /usr/local/bin/vios