On Wednesday, 5 May 2004 at 9:10:27 -0400, Bill Moran wrote: > Thuan Truong wrote: >> >> I would like to have the source code of 'ln' (make hard or symbolic >> links to files) command from Free-BSD ftp site. Please let me know >> how and where to unload it. > > If you installed source on your FreeBSD system, it's in /usr/src/bin/ln > > Otherwise, you can download any version you want from cvs: > http://www.freebsd.org/cgi/cvsweb.cgi/src/bin/ln/
Note that ln(1) is a relatively simple interface to link(2), which is
in the kernel. Here's the complete source of the version supplied
with the Sixth Edition of UNIX:
main(argc, argv)
char **argv;
{
static struct ibuf statb;
register char *np;
if (argc<2) {
write(1, "Usage: ln target [ newname ]\n", 29);
exit(1);
}
if (argc==2) {
np = argv[1];
while(*np++);
while (*--np!='/' && np>argv[1]);
np++;
argv[2] = np;
}
stat(argv[1], &statb);
if ((statb.iflags&FMT) == DIR) {
write(1, "No directory link\n", 18);
exit(1);
}
if (link(argv[1], argv[2])<0) {
write(1, "Can't link\n", 11);
exit(1);
}
exit(0);
}
Greg
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