Chapter 4: Posix Entry Points

This section is excerpted from The GNU C Library reference manual by Sandra Loosemore with Richard M. Stallman, Roland McGrath, and Andrew Oram.

The GNU C library supports the standard POSIX.2 interface. Programs using this interface should include the header file `rxposix.h'.

POSIX Regexp Compilation Using regcomp to prepare to match.

Flags for POSIX Regexps Syntax variations for regcomp.

Matching POSIX Regexps Using regexec to match the compiled pattern that you get from regcomp.

Regexp Subexpressions Finding which parts of the string were matched.

Subexpression Complications Find points of which parts were matched.

Regexp Cleanup Freeing storage; reporting errors.