bsd man page for nlist

NLIST(3)						     Library Functions Manual							  NLIST(3)

NAME
       nlist - get entries from name list

SYNOPSIS
       #include <nlist.h>

       nlist(filename, nl)
       char *filename;
       struct nlist nl[];

DESCRIPTION
       Nlist  examines	the name list in the given executable output file and selectively extracts a list of values.  The name list consists of an
       array of structures containing names, types and values.	The list is terminated with a null name.  Each name is looked up in the name  list
       of  the	file.	If  the name is found, the type and value of the name are inserted in the next two fields.  If the name is not found, both
       entries are set to 0.  See a.out(5) for the structure declaration.

       This subroutine is useful for examining the system name list kept in the file /vmunix.  In this way programs can  obtain  system  addresses
       that are up to date.

SEE ALSO
       a.out(5)

DIAGNOSTICS
       If the file cannot be found or if it is not a valid namelist -1 is returned; otherwise, the number of unfound namelist entries is returned.

       The type entry is set to 0 if the symbol is not found.

4th Berkeley Distribution					   May 15, 1985 							  NLIST(3)