IP Filter
TCP/IP Packet Filtering package Autoconf Tutorial
Introduction to programming using GNU's autoconf system. Autoconf simplifies the porting process and provides a consistent build interface for system administrators. Wildcard Pattern Matching
C routine to check whether a string matches a unix wildcard. '*', '?', sets of characters, and negated sets of characters are supported. Serial Programming Guide for POSIX Operating Systems
Programming serial ports in Unix. UNIX and Programming Section
Tutorials and manuals for Java and PHP. Unix programming resources and examples
Annotated source code examples for most Unix system and library calls. Plus working source code examples of some classic algorithms.