----------------------------------------
freebsd 2.1 system, tour of file system:
----------------------------------------
homebrew# cd /
homebrew# ls -CF
.cshrc		cdrom/		kernel*		proc/		tmp/
.profile	dev/		kernel.GENERIC*	root/		typescript
COPYRIGHT	dos/		lkm/		sbin/		usr/
OK		etc/		mnt/		stand/		var/
bin/		home@		out		sys@
homebrew# ls -CF bin
[*		df*		ln*		rcp*		stty*
cat*		domainname*	ls*		red*		sync*
chmod*		echo*		mkdir*		rm*		test*
cp*		ed*		mv*		rmail*
csh*		expr*		pax*		rmdir*
date*		hostname*	ps*		sh*
dd*		kill*		pwd*		sleep*
homebrew# ls -CF cdrom
00_TRANS.TBL	RELNOTES.TXT	docs/		install.bat	ports/
00_index.txt	anims/		fbsdboot.exe	kernel*		tools/
HARDWARE.TXT	atapiflp.bat	filename.txt	kernel.IDE*	utils/
INSTALL.TXT	cdrom.cfg	floppies/	makeflp.bat	view.exe
README.TXT	dists/		inst_ide.bat	packages/	view.pif
homebrew# ls dev/MAKEDEV
dev/MAKEDEV
homebrew# ls -l /dev/rwd*
crw-r-----  1 root  operator    3, 65538 Dec 29 07:06 /dev/rwd0
crw-r-----  1 root  operator    3,   0 Dec 29 07:06 /dev/rwd0a
crw-r-----  1 root  operator    3,   1 Dec 29 07:06 /dev/rwd0b
crw-r-----  1 root  operator    3,   2 Dec 29 07:06 /dev/rwd0c
crw-r-----  1 root  operator    3,   3 Dec 29 07:06 /dev/rwd0d
crw-r-----  1 root  operator    3,   4 Dec 29 07:06 /dev/rwd0e
crw-r-----  1 root  operator    3,   5 Dec 29 07:06 /dev/rwd0f
crw-r-----  1 root  operator    3,   6 Dec 29 07:06 /dev/rwd0g
crw-r-----  1 root  operator    3,   7 Dec 29 07:06 /dev/rwd0h
crw-r-----  1 root  operator    3, 131074 Dec 29 07:06 /dev/rwd0s1
crw-r-----  1 root  operator    3, 196610 Dec 29 07:07 /dev/rwd0s2
crw-r-----  1 root  operator    3, 196608 Dec 29 07:07 /dev/rwd0s2a
crw-r-----  1 root  operator    3, 196609 Dec 29 07:07 /dev/rwd0s2b
crw-r-----  1 root  operator    3, 196610 Dec 29 07:07 /dev/rwd0s2c
crw-r-----  1 root  operator    3, 196611 Dec 29 07:07 /dev/rwd0s2d
crw-r-----  1 root  operator    3, 196612 Dec 29 07:07 /dev/rwd0s2e
crw-r-----  1 root  operator    3, 196613 Dec 29 07:07 /dev/rwd0s2f
crw-r-----  1 root  operator    3, 196614 Dec 29 07:07 /dev/rwd0s2g
crw-r-----  1 root  operator    3, 196615 Dec 29 07:07 /dev/rwd0s2h
crw-r-----  1 root  operator    3, 262146 Dec 29 07:06 /dev/rwd0s3
crw-r-----  1 root  operator    3, 327682 Dec 29 07:06 /dev/rwd0s4
homebrew# ls -ld /dev/wd*
brw-r-----  1 root  operator    0, 65538 Dec 29 07:06 /dev/wd0
brw-r-----  1 root  operator    0,   0 Dec 29 07:06 /dev/wd0a
brw-r-----  1 root  operator    0,   1 Dec 29 07:06 /dev/wd0b
brw-r-----  1 root  operator    0,   2 Dec 29 07:06 /dev/wd0c
brw-r-----  1 root  operator    0,   3 Dec 29 07:06 /dev/wd0d
brw-r-----  1 root  operator    0,   4 Dec 29 07:06 /dev/wd0e
brw-r-----  1 root  operator    0,   5 Dec 29 07:06 /dev/wd0f
brw-r-----  1 root  operator    0,   6 Dec 29 07:06 /dev/wd0g
brw-r-----  1 root  operator    0,   7 Dec 29 07:06 /dev/wd0h
brw-r-----  1 root  operator    0, 131074 Dec 29 07:06 /dev/wd0s1
brw-r-----  1 root  operator    0, 196610 Dec 29 07:07 /dev/wd0s2
brw-r-----  1 root  operator    0, 196608 Dec 29 07:07 /dev/wd0s2a
brw-r-----  1 root  operator    0, 196609 Dec 29 07:07 /dev/wd0s2b
brw-r-----  1 root  operator    0, 196610 Dec 29 07:07 /dev/wd0s2c
brw-r-----  1 root  operator    0, 196611 Dec 29 07:07 /dev/wd0s2d
brw-r-----  1 root  operator    0, 196612 Dec 29 07:07 /dev/wd0s2e
brw-r-----  1 root  operator    0, 196613 Dec 29 07:07 /dev/wd0s2f
brw-r-----  1 root  operator    0, 196614 Dec 29 07:07 /dev/wd0s2g
brw-r-----  1 root  operator    0, 196615 Dec 29 07:07 /dev/wd0s2h
brw-r-----  1 root  operator    0, 262146 Dec 29 07:06 /dev/wd0s3
brw-r-----  1 root  operator    0, 327682 Dec 29 07:06 /dev/wd0s4
---------------------------------------------------------------------
note # df
Filesystem  1K-blocks     Used    Avail Capacity  Mounted on
/dev/wd0a       32254    13066    16606    44%    /
/dev/wd0s1     409504   237608   171896    58%    /dos
/dev/wd0s2f    531678   274522   214620    56%    /usr
/dev/wd0s2e     30206     1454    26334     5%    /var
procfs              4        4        0   100%    /proc
/dev/cd0a      650002   650002        0   100%    /cdrom
---------------------------------------------------------------------
homebrew# ls etc
XF86Config		hosts.equiv		profile
adduser.conf		hosts.lpd		protocols
adduser.message		inetd.conf		pwd.db
aliases			kerberosIV		rc
backup.sh		localtime		rc.i386
cdrom.sh		login.access		rc.local
crontab			magic			rc.serial
csh.cshrc		mail.rc			remote
csh.login		make.conf		resolv.conf
csh.logout		manpath.config		rmt
daily			manpath.config.sample	rpc
disktab			master.passwd		security
dm.conf			modems			sendmail.cf
dumpdates		monthly			services
fstab			motd			shells
fstab.old		mountdos.sh		shells.bak
fstab.orig		mtree			skeykeys
fstab.wd		namedb			spwd.db
ftpusers		net.info		sysconfig
gettytab		netstart		syslog.conf
gnats			networks		termcap
group			passwd			ttys
group.bak		phones			uucp
host.conf		ppp			weekly
hosts			printcap		xf86conf
---------------------------------------------------------------------
homebrew# ls home
jrb
---------------------------------------------------------------------
homebrew# size kernel
text	data	bss	dec	hex
839680	69632	80876	990188	f1bec
homebrew# ls -l kernel
-rwxr-xr-x  1 root  wheel  1029926 Dec 29 11:16 kernel
homebrew# file kernel
kernel: demand paged executable
---------------------------------------------------------------------
homebrew# ls lkm
blank_saver_mod.o	if_ppp_mod.o		null_mod.o
cd9660_mod.o		if_sl_mod.o		portal_mod.o
fade_saver_mod.o	if_tun_mod.o		procfs_mod.o
fdesc_mod.o		ipfw_mod.o		snake_saver_mod.o
green_saver_mod.o	kernfs_mod.o		socksys_mod.o
ibcs2_coff_mod.o	linux_mod.o		star_saver_mod.o
ibcs2_mod.o		msdos_mod.o		umap_mod.o
if_disc_mod.o		nfs_mod.o		union_mod.o
---------------------------------------------------------------------
homebrew# ls proc
0	133	138	152	165	190	241	3	82
1	134	143	154	166	191	253	4	84
129	135	149	160	167	192	254	58	88
131	136	150	162	168	199	255	64	curproc
132	137	151	164	170	2	273	75
---------------------------------------------------------------------
homebrew# ls sbin
adjkerntz	fasthalt	modunload	mount_umap	restore
badsect		fdisk		mount		mount_union	route
clri		fsck		mount_cd9660	mountd		rrestore
comcontrol	ft		mount_fdesc	newfs		savecore
disklabel	halt		mount_kernfs	newlfs		scsi
dmesg		ifconfig	mount_lfs	nfsd		shutdown
dset		init		mount_mfs	nfsiod		slattach
dump		ipfw		mount_msdos	nologin		startslip
dumpfs		ldconfig	mount_nfs	ping		swapon
dumplfs		md5		mount_null	quotacheck	tunefs
dumpon		mknod		mount_portal	rdump		umount
fastboot	modload		mount_procfs	reboot
---------------------------------------------------------------------
homebrew# ls var
account		cron		mail		rwho
at		db		msgs		spool
backups		games		preserve	tmp
crash		log		run		yp
homebrew# ls var/log
adduser			maillog.3		messages.1
lastlog			maillog.4		messages.2
lpd-errs		maillog.5		sendmail.st
maillog			maillog.6		setuid.today
maillog.0		maillog.7		setuid.yesterday
maillog.1		messages		wtmp
maillog.2		messages.0
---------------------------------------------------------------------
homebrew# ls usr
X11		home		local		ports		tape2
X11R6		include		mdec		sbin		tmp
bin		lib		netscape	share
games		libexec		obj		src
---------------------------------------------------------------------
homebrew# ls usr/X11R6
bin	include	lib	man
---------------------------------------------------------------------
homebrew# ls usr/home
jrb
---------------------------------------------------------------------
homebrew# ls /usr/include
a.out.h		fstab.h		ndbm.h		regexp.h	sys
ar.h		fts.h		net		resolv.h	sysexits.h
arpa		g++		netccitt	rpc		syslog.h
assert.h	glob.h		netdb.h		rpcsvc		tar.h
bitstring.h	gnuregex.h	netinet		rune.h		term.h
com_err.h	grp.h		netiso		runetype.h	termcap.h
ctype.h		histedit.h	netns		scsi.h		termios.h
curses.h	kerberosIV	nfs		setjmp.h	time.h
db.h		kvm.h		nl_types.h	sgtty.h		ttyent.h
dialog.h	limits.h	nlist.h		signal.h	ufs
dirent.h	link.h		nterm.h		skey.h		unctrl.h
disktab.h	locale.h	objc		ss		unistd.h
dlfcn.h		machine		osreldate.h	stab.h		utime.h
err.h		malloc.h	paths.h		stdarg.h	utmp.h
errno.h		math.h		pcap-namedb.h	stddef.h	values.h
f2c.h		md2.h		pcap.h		stdio.h		varargs.h
fcntl.h		md4.h		protocols	stdlib.h	vis.h
float.h		md5.h		pwd.h		strhash.h	vm
floatingpoint.h	memory.h	ranlib.h	string.h
fnmatch.h	mpool.h		readline	strings.h
forms.h		ncurses.h	regex.h		struct.h
---------------------------------------------------------------------
homebrew# ls /usr/include/sys
acct.h		exec.h		mbuf.h		signal.h	tty.h
buf.h		fbio.h		mman.h		signalvar.h	ttychars.h
callout.h	fcntl.h		mount.h		snoop.h		ttycom.h
cdefs.h		file.h		msg.h		socket.h	ttydefaults.h
cdio.h		filedesc.h	msgbuf.h	socketvar.h	ttydev.h
chio.h		filio.h		mtio.h		sockio.h	types.h
clist.h		ftape.h		namei.h		stat.h		ucred.h
conf.h		gmon.h		param.h		syscall-hide.h	uio.h
dataacq.h	imgact.h	proc.h		syscall.h	un.h
devconf.h	imgact_aout.h	protosw.h	sysctl.h	unistd.h
device.h	inflate.h	ptrace.h	sysent.h	unpcb.h
dir.h		ioccom.h	queue.h		syslimits.h	user.h
dirent.h	ioctl.h		reboot.h	syslog.h	utsname.h
disk.h		ioctl_compat.h	resource.h	systm.h		vadvise.h
disklabel.h	ipc.h		resourcevar.h	tablet.h	vcmd.h
diskslice.h	kernel.h	rlist.h		termios.h	vlimit.h
dkbad.h		ktrace.h	rtprio.h	time.h		vmmeter.h
dkstat.h	libkern.h	scsiio.h	timeb.h		vnioctl.h
dmap.h		lkm.h		select.h	times.h		vnode.h
domain.h	lockf.h		sem.h		timex.h		vsio.h
errno.h		malloc.h	shm.h		tprintf.h	wait.h
---------------------------------------------------------------------
homebrew# ls usr
X11		home		local		ports		tape2
X11R6		include		mdec		sbin		tmp
bin		lib		netscape	share
games		libexec		obj		src
---------------------------------------------------------------------
homebrew# ls /usr/lib
X11			libg++_p.a		libreadline.so.3.0
c++rt0.o		libgcc.a		libreadline_p.a
crt0.o			libgcc.so.261.0		libresolv.a
gcrt0.o			libgcc_p.a		libresolv.so.2.0
kzhead.o		libgcc_pic.a		libresolv_p.a
kztail.o		libgnumalloc.a		librpcsvc.a
libc.a			libgnumalloc.so.2.0	librpcsvc.so.2.0
libc.so.2.2		libgnumalloc_p.a	librpcsvc_p.a
libc_p.a		libgnuregex.a		libscrypt.a
libc_pic.a		libgnuregex.so.2.0	libscrypt.so.2.0
libcom_err.a		libgnuregex_p.a		libscrypt_p.a
libcom_err.so.2.0	libkeycap.a		libscsi.a
libcom_err_p.a		libkeycap_p.a		libscsi.so.2.0
libcompat.a		libkvm.a		libscsi_p.a
libcompat_p.a		libkvm.so.2.0		libskey.a
libcrypt.a		libkvm_p.a		libskey.so.2.0
libcrypt.so.2.0		libl.a			libskey_p.a
libcrypt_p.a		libl_p.a		libss.a
libcurses.a		libln.a			libss.so.2.0
libcurses.so.2.0	libln_p.a		libss_p.a
libcurses_p.a		libm.a			libtelnet.a
libdialog.a		libm.so.2.0		libtelnet.so.2.0
libdialog.so.3.0	libm_p.a		libtelnet_p.a
libdialog_p.a		libmd.a			libtermcap.a
libedit.a		libmd_p.a		libtermcap.so.2.1
libedit.so.2.0		libmytinfo.a		libtermcap_p.a
libedit_p.a		libmytinfo.so.2.0	libtermlib.a
libf2c.a		libmytinfo_p.a		libtermlib.so.2.1
libf2c.so.2.0		libncurses.a		libtermlib_p.a
libf2c_p.a		libncurses.so.3.0	libutil.a
libforms.a		libncurses_p.a		libutil.so.2.0
libforms.so.3.0		libpcap.a		libutil_p.a
libforms_p.a		libpcap.so.2.0		liby.a
libg++.a		libpcap_p.a		liby.so.2.0
libg++.so.3.0		libreadline.a		liby_p.a
---------------------------------------------------------------------
homebrew# ls /usr/libexec
atrun		ftpd		lpr		rlogind		uucpd
bootpd		getNAME		mail.local	rpc.rstatd	vfontedpr
bootpgw		getty		makekey		rpc.rusersd	xtend
cc1		ld.so		mknetid		rpc.rwalld	yppwupdate
cc1plus		lfs_cleanerd	named-xfer	rshd		ypxfr
comsat		locate.bigram	ntalkd		telnetd
cpp		locate.code	rbootd		tftpd
fingerd		locate.updatedb	rexecd		uucp
---------------------------------------------------------------------
homebrew# ls /usr/local
bin		info		man		share		www
etc		lib		netscape	tclX
include		libexec		sbin		tkX
---------------------------------------------------------------------
homebrew# ls /usr/sbin
ac		edquota		mcon		pppstats	timed
accton		fdcontrol	mixer		praliases	timedc
adduser		fdformat	mk-amd-map	pstat		traceroute
amd		fdwrite		mrinfo		pwd_mkdb	trpt
amq		fontedit	mrouted		quotaoff	tzsetup
apm		fsinfo		mtrace		quotaon		uuchk
apmconf		idprio		mtree		rarpd		uuconv
arp		inetd		named		repquota	vidcontrol
bad144		iostat		named.reload	rmt		vidfont
bootparamd	ispcvt		named.restart	routed		vipw
bootpef		kbdcontrol	ncrcontrol	rtprio		vnconfig
bootptest	kbdmap		ndc		rwhod		vt220keys
callbootd	kcon		nslookup	sa		vttest
cdcontrol	kernbb		ntpdate		scon		watch
cdplay		kgmon		ntptrace	sendmail	xntpd
chown		kvm_mkdb	pac		sgsc		xntpdc
chroot		loadfont	pkg_add		sicontrol	xten
config		lpc		pkg_create	sliplogin	yp_mkdb
cron		lpd		pkg_delete	slstat		ypbind
ctm		lptcontrol	pkg_info	spkrtest	yppasswdd
ctm_rmail	lptest		pkg_manage	swapinfo	yppoll
ctm_scan	lsdev		pmap_dump	sysctl		ypserv
ctm_smail	mailstats	pmap_set	syslogd		ypset
cursor		makemap		portmap		tcpdump		zdump
dev_mkdb	manctl		ppp		tcpslice	zic
diskpart	map-mbone	pppd		tickadj		zzz
---------------------------------------------------------------------
homebrew# ls /usr/share
calendar	groff_font	me		sgml		zoneinfo
dict		info		misc		skel
doc		isdn		mk		syscons
examples	locale		nls		tabset
games		man		perl		tmac
---------------------------------------------------------------------
homebrew# ls /usr/share/doc
FAQ		papers		smm
handbook	psd		usd
---------------------------------------------------------------------
homebrew# cd /usr/src/sys
---------------------------------------------------------------------
homebrew# ls -CF
Makefile	gnu/		miscfs/		netiso/		scsi/
compile/	i386/		msdosfs/	netns/		sys/
conf/		isofs/		net/		nfs/		ufs/
ddb/		kern/		netccitt/	pccard/		vm/
dev/		libkern/	netinet/	pci/
---------------------------------------------------------------------
homebrew# cd i386
homebrew# ls
Makefile	conf		ibcs2		linux
apm		eisa		include		scsi
boot		i386		isa
---------------------------------------------------------------------
homebrew# cd conf
homebrew# ls
BOOTMFS		LINT		ZYMURGY		files.i386	zymurgy.old
GENERIC		Makefile.i386	devices.i386	orig
---------------------------------------------------------------------
homebrew# cd ../../compile
homebrew# ls
.keep_me	ZYMURGY
homebrew# cd ZYMURGY
homebrew# ls kernel Makefile
ls: kernel: No such file or directory
Makefile
---------------------------------------------------------------------
homebrew# cd ../..
homebrew# ls
Makefile	gnu		miscfs		netiso		scsi
compile		i386		msdosfs		netns		sys
conf		isofs		net		nfs		ufs
ddb		kern		netccitt	pccard		vm
dev		libkern		netinet		pci
---------------------------------------------------------------------
homebrew# ls dev
aic7xxx	vn
---------------------------------------------------------------------
homebrew# ls gnu
i386	isdn
---------------------------------------------------------------------
homebrew# ls isofs
cd9660
---------------------------------------------------------------------
homebrew# ls kern
Make.tags.inc		kern_subr.c		tty_conf.c
Makefile		kern_synch.c		tty_pty.c
imgact_aout.c		kern_sysctl.c		tty_snoop.c
imgact_gzip.c		kern_time.c		tty_subr.c
imgact_shell.c		kern_xxx.c		tty_tb.c
inflate.c		makesyscalls.sh		tty_tty.c
init_main.c		subr_autoconf.c		uipc_domain.c
init_sysent.c		subr_diskslice.c	uipc_mbuf.c
kern_acct.c		subr_dkbad.c		uipc_proto.c
kern_clock.c		subr_log.c		uipc_socket.c
kern_descrip.c		subr_prf.c		uipc_socket2.c
kern_devconf.c		subr_prof.c		uipc_syscalls.c
kern_exec.c		subr_rlist.c		uipc_usrreq.c
kern_exit.c		subr_xxx.c		vfs_bio.c
kern_fork.c		sys_generic.c		vfs_cache.c
kern_ktrace.c		sys_process.c		vfs_cluster.c
kern_lkm.c		sys_socket.c		vfs_conf.c
kern_lockf.c		syscalls.c		vfs_init.c
kern_malloc.c		syscalls.master		vfs_lookup.c
kern_ntptime.c		sysv_ipc.c		vfs_subr.c
kern_physio.c		sysv_msg.c		vfs_syscalls.c
kern_proc.c		sysv_sem.c		vfs_vnops.c
kern_prot.c		sysv_shm.c		vnode_if.sh
kern_resource.c		tty.c			vnode_if.src
kern_sig.c		tty_compat.c
---------------------------------------------------------------------
homebrew# ls libkern
Makefile	ffs.c		mcount.po	rindex.po	strncpy.c
adddi3.c	ffs.o		moddi3.c	scanc.c		strncpy.o
adddi3.o	ffs.po		moddi3.o	scanc.o		strncpy.po
adddi3.po	inet_ntoa.c	moddi3.po	scanc.po	subdi3.c
anddi3.c	inet_ntoa.o	muldi3.c	skpc.c		subdi3.o
anddi3.o	inet_ntoa.po	muldi3.o	skpc.o		subdi3.po
anddi3.po	iordi3.c	muldi3.po	skpc.po		ucmpdi2.c
ashldi3.c	iordi3.o	negdi2.c	strcat.c	ucmpdi2.o
ashldi3.o	iordi3.po	negdi2.o	strcat.o	ucmpdi2.po
ashldi3.po	libkern.a	negdi2.po	strcat.po	udivdi3.c
ashrdi3.c	libkern_p.a	notdi2.c	strcmp.c	udivdi3.o
ashrdi3.o	locc.c		notdi2.o	strcmp.o	udivdi3.po
ashrdi3.po	locc.o		notdi2.po	strcmp.po	umoddi3.c
bcmp.c		locc.po		qdivrem.c	strcpy.c	umoddi3.o
bcmp.o		lshldi3.c	qdivrem.o	strcpy.o	umoddi3.po
bcmp.po		lshldi3.o	qdivrem.po	strcpy.po	xordi3.c
cmpdi2.c	lshldi3.po	quad.h		strlen.c	xordi3.o
cmpdi2.o	lshrdi3.c	random.c	strlen.o	xordi3.po
cmpdi2.po	lshrdi3.o	random.o	strlen.po
divdi3.c	lshrdi3.po	random.po	strncmp.c
divdi3.o	mcount.c	rindex.c	strncmp.o
divdi3.po	mcount.o	rindex.o	strncmp.po
---------------------------------------------------------------------
homebrew# ls miscfs
deadfs	fdesc	kernfs	portal	specfs	union
devfs	fifofs	nullfs	procfs	umapfs
---------------------------------------------------------------------
homebrew# ls msdosfs
bootsect.h		fat.h			msdosfs_lookup.c
bpb.h			msdosfs_conv.c		msdosfs_vfsops.c
denode.h		msdosfs_denode.c	msdosfs_vnops.c
direntry.h		msdosfs_fat.c		msdosfsmount.h
---------------------------------------------------------------------
homebrew# ls net
bpf.c		if_disc.c	if_sl.c		pppcompress.c	route.h
bpf.h		if_dl.h		if_slvar.h	pppcompress.h	rtsock.c
bpf_compat.h	if_ethersubr.c	if_sppp.h	radix.c		slcompress.c
bpf_filter.c	if_fddisubr.c	if_spppsubr.c	radix.h		slcompress.h
bpfdesc.h	if_llc.h	if_tun.c	raw_cb.c	slip.h
if.c		if_loop.c	if_tun.h	raw_cb.h
if.h		if_ppp.c	if_types.h	raw_usrreq.c
if_arp.h	if_ppp.h	netisr.h	route.c
---------------------------------------------------------------------
homebrew# ls netinet
icmp_var.h	in_cksum.c	ip_fw.h		raw_ip.c	tcp_timer.c
if_ether.c	in_pcb.c	ip_fwdef.c	tcp.h		tcp_timer.h
if_ether.h	in_pcb.h	ip_icmp.c	tcp_debug.c	tcp_usrreq.c
if_fddi.h	in_proto.c	ip_icmp.h	tcp_debug.h	tcp_var.h
igmp.c		in_rmx.c	ip_input.c	tcp_fsm.h	tcpip.h
igmp.h		in_systm.h	ip_mroute.c	tcp_input.c	udp.h
igmp_var.h	in_var.h	ip_mroute.h	tcp_output.c	udp_usrreq.c
in.c		ip.h		ip_output.c	tcp_seq.h	udp_var.h
in.h		ip_fw.c		ip_var.h	tcp_subr.c
---------------------------------------------------------------------
homebrew# ls nfs
nfs.h		nfs_socket.c	nfs_vnops.c	nfsrtt.h	xdr_subs.h
nfs_bio.c	nfs_srvcache.c	nfsdiskless.h	nfsrvcache.h
nfs_node.c	nfs_subs.c	nfsm_subs.h	nfsv2.h
nfs_nqlease.c	nfs_syscalls.c	nfsmount.h	nqnfs.h
nfs_serv.c	nfs_vfsops.c	nfsnode.h	rpcv2.h
---------------------------------------------------------------------
homebrew# ls sys
acct.h		exec.h		mbuf.h		signal.h	tty.h
buf.h		fbio.h		mman.h		signalvar.h	ttychars.h
callout.h	fcntl.h		mount.h		snoop.h		ttycom.h
cdefs.h		file.h		msg.h		socket.h	ttydefaults.h
cdio.h		filedesc.h	msgbuf.h	socketvar.h	ttydev.h
chio.h		filio.h		mtio.h		sockio.h	types.h
clist.h		ftape.h		namei.h		stat.h		ucred.h
conf.h		gmon.h		param.h		syscall-hide.h	uio.h
dataacq.h	imgact.h	proc.h		syscall.h	un.h
devconf.h	imgact_aout.h	protosw.h	sysctl.h	unistd.h
device.h	inflate.h	ptrace.h	sysent.h	unpcb.h
dir.h		ioccom.h	queue.h		syslimits.h	user.h
dirent.h	ioctl.h		reboot.h	syslog.h	utsname.h
disk.h		ioctl_compat.h	resource.h	systm.h		vadvise.h
disklabel.h	ipc.h		resourcevar.h	tablet.h	vcmd.h
diskslice.h	kernel.h	rlist.h		termios.h	vlimit.h
dkbad.h		ktrace.h	rtprio.h	time.h		vmmeter.h
dkstat.h	libkern.h	scsiio.h	timeb.h		vnioctl.h
dmap.h		lkm.h		select.h	times.h		vnode.h
domain.h	lockf.h		sem.h		timex.h		vsio.h
errno.h		malloc.h	shm.h		tprintf.h	wait.h
---------------------------------------------------------------------
homebrew# ls ufs
ffs	lfs	mfs	ufs
---------------------------------------------------------------------
homebrew# ls ufs/ufs
dinode.h	quota.h		ufs_extern.h	ufs_lookup.c	ufs_vfsops.c
dir.h		ufs_bmap.c	ufs_ihash.c	ufs_quota.c	ufs_vnops.c
inode.h		ufs_disksubr.c	ufs_inode.c	ufs_readwrite.c	ufsmount.h
---------------------------------------------------------------------
homebrew# ls vm
device_pager.c	vm.h		vm_kern.h	vm_page.c	vm_prot.h
device_pager.h	vm_extern.h	vm_map.c	vm_page.h	vm_swap.c
kern_lock.c	vm_fault.c	vm_map.h	vm_pageout.c	vm_unix.c
lock.h		vm_glue.c	vm_meter.c	vm_pageout.h	vnode_pager.c
pmap.h		vm_inherit.h	vm_mmap.c	vm_pager.c	vnode_pager.h
swap_pager.c	vm_init.c	vm_object.c	vm_pager.h
swap_pager.h	vm_kern.c	vm_object.h	vm_param.h
---------------------------------------------------------------------
homebrew# cd /sys/i386/isa
homebrew# ls
README.le		if_egreg.h		ncr5380.c
aha1542.c		if_el.c			npx.c
aha1742.c		if_elreg.h		out
aic6360.c		if_ep.c			pcaudio.c
aic7770.c		if_epreg.h		pcibus.c
asc.c			if_fe.c			pcic.c
ascreg.h		if_fereg.h		pcic.h
atapi.c			if_ie.c			pcvt
atapi.h			if_ie507.h		psm.c
b004.c			if_iereg.h		rc.c
b004.h			if_ix.c			rcreg.h
bt742a.c		if_ixreg.h		readMBR.c
clock.c			if_le.c			rtc.h
cronyx.c		if_lnc.c		scd.c
ctx.c			if_lnc.h		scdreg.h
ctxreg.h		if_wl.c			seagate.c
cx.c			if_wl.h			si.c
cxreg.h			if_wl_i82586.h		si_code.c
cy.c			if_wl_wavelan.h		sio.c
cyreg.h			if_wv.c			sioreg.h
diskslice_machdep.c	if_wvreg.h		sireg.h
elink.c			if_ze.c			snarf
elink.h			if_zereg.h		sound
fd.c			if_zp.c			spigot.c
fdc.h			if_zpreg.h		spkr.c
fdreg.h			isa.c			syscons.c
ft.c			isa.h			syscons.h
ftreg.h			isa_device.h		tags
gpib.c			iso8859.font		timerreg.h
gpib.h			joy.c			tw.c
gpibreg.h		kbd.h			ultra14f.c
gsc.c			kbdtables.h		vector.s
gscreg.h		labpc.c			wavelan.tar
ic			lpt.c			wcd.c
icu.h			lptreg.h		wd.c
icu.s			makewv.sh		wd7000.c
if_cx.c			matcd			wdreg.h
if_ed.c			mcd.c			wt.c
if_edreg.h		mcdreg.h		wtreg.h
if_eg.c			mse.c
---------------------------------------------------------------------
homebrew# cd ../i386
homebrew# ls
autoconf.c		in_cksum.c		support.s
conf.c			locore.s		swapgeneric.c
cons.c			machdep.c		swtch.s
cons.h			math_emu.h		symbols.raw
db_disasm.c		math_emulate.c		sys_machdep.c
db_interface.c		mem.c			trap.c
db_trace.c		microtime.s		userconfig.c
dkbad.c			ns_cksum.c		vm_machdep.c
exception.s		pmap.c
genassym.c		procfs_machdep.c