cmdok checks that specified commands are OK. If command is OK than it exists in PATH and can be run.
It is a simple, small and portable Bash script. It is useful in software packages that want to check that some commands exist before trying to run them.
See wiki for more information and examples.
pofig - portable shell script for probing base system properties: OS, OS version, kernel version, distro, distro version, architecture.
It detects: 19 operating systems, 11 major linux distros, 13 CPU types.
See wiki for more information and examples.
lpp-get is a tool to automate download and installation of AIX filesets/packages from archive sites. lpp-get includes the ability to process new filesets and to patch existing ones.