redhat man page for strsep

STRSEP(3)						     Linux Programmer's Manual							 STRSEP(3)

NAME
       strsep - extract token from string

SYNOPSIS
       #include <string.h>

       char *strsep(char **stringp, const char *delim);

DESCRIPTION
       If *stringp is NULL, the strsep() function returns NULL and does nothing else. Otherwise, this function finds the first token in the string
       *stringp, where tokens are delimited by symbols in the string delim.  This token is terminated with a `' character  (by  overwriting  the
       delimiter)  and	*stringp  is  updated to point past the token.	In case no delimiter was found, the token is taken to be the entire string
       *stringp, and *stringp is made NULL.

RETURN VALUE
       The strsep() function returns a pointer to the token, that is, it returns the original value of *stringp.

NOTES
       The strsep() function was introduced as a replacement for strtok(), since the latter cannot handle empty fields.   However,  strtok()  con-
       forms to ANSI-C and hence is more portable.

BUGS
       This function suffers from the same problems as strtok().  In particular, it modifies the original string. Avoid it.

CONFORMING TO
       BSD 4.4

SEE ALSO
       index(3), memchr(3), rindex(3), strchr(3), strpbrk(3), strspn(3), strstr(3), strtok(3)

GNU
								    1993-04-12								 STRSEP(3)