To find out if a 32-bit or 64-bit Unix operating system is installed on a server, you can use the uname command with the -m option. The -m option shows the machine hardware name, which indicates the architecture of the operating system.
For example, you can run the following command:
uname -m
If the output of the command is i686 or i386, it means that the operating system is a 32-bit version. If the output is x86_64, it means that the operating system is a 64-bit version.
You can also use the getconf LONG_BIT command to check the size of the long data type, which indicates the architecture of the operating system.
For example, you can run the following command:
getconf LONG_BIT
If the output of the command is 32, it means that the operating system is a 32-bit version. If the output is 64, it means that the operating system is a 64-bit version.