You would like to enable debug logging for an installation error with the Symantec Agent for Linux. This applies to both Symantec Endpoint Protection (SEP) and Symantec Endpoint Security (SES).
./LinuxInstaller -xThis will create a new directory that starts with inst*.
./installagent.sh --debugThis will generate debug logs of the installation session. This is an interactive installation, so you will need to press Enter when the script asks.