SHSTAT is like the stat command and the stat() function except that it's designed for use in shell scripts. The tar.gz file contains a single C source file and a man page. A partial alternative to shstat is GNU find via its printf argument.
pdksh is a public domain implementation of the Korn shell (ksh88), a UNIX command line interpreter / scripting language. It also follows the POSIX 1003.2 spec for a shell. The few missing ksh88 features and some ksh93 features are being added.