Manually Installing SAP Host Agent on UNIX 
You can install SAP Host Agent manually by executing the saphostexec executable with option –install from the decompressed SAPHOSTAGENT<SP-version>.SAR archive.
You are logged on as a user with root authorization.
You have downloaded the SAPHOSTAGENT<SP-version>.SAR archive.
Copy the downloaded SAPHOSTAGENT<SP-version>.SAR archive to a temporary directory, for example /tmp/hostagent.
Decompress the SAPHOSTAGENT<SP-version>.SAR archive with the SAPCAR tool to this directory. Take SAP Note 212876 into account when doing so. Normally, you use the following command for decompression, and execute it in the directory of the archive:
./sapcar -xvf SAPHOSTAGENT<SP-version>.SAR
Example
./sapcar -xvf SAPHOSTAGENT126_126-20005735.SAR /tmp/hostagent
The archive also contains the saphostexec program.
Change to the directory to which you have decompressed SAPHOSTAGENT<SP-version>.SAR.
Example
cd /tmp/hostagent
Start the installation by entering the following command:
./saphostexec -install
The progress of the installation is displayed on the command line.
After the installation you can delete the temporary directory.
Example
rm -rf /tmp/hostagent
The administrator user sapadm of the SAP Host Agent was created during the installation, but it did not get assigned a password. You can assign a password to user sapadm by entering the following command:
passwd sapadm
After the installation has successfully finished, SAP Host Agent is up and running.
You have installed and started the following units on your host:
The control program saphostexec
The operating system collector saposcol
The SAP NetWeaver Management agent SAPHostControl (sapstartsrv in host mode)
If you use System Landscape Directory (SLD), register the host with the SLD after installing SAP Host Agent (see Registering Hosts with the SLD Using sldreg). You need this data in the SLD, for example, for using the Adaptive Computing Infrastructure.