openbsd /etc/rc文件导读:

rainren · 发表于 2004-6-3 16:40:52

/etc/rc文件导读

前言:
openbsd启动时执行/etc/rc文件, 检查挂载文件系统, 启动系统上如httpd, ftpd, named等服务, 因此我们有空时读读这个shell脚本文件对启动系统时出现的各类信息会有一个明确的了解.

基础知识:

shell编程的知识:
首先, 我们来说说if条件结构
在sh编程中:

if command; then
some commands;
fi

复制代码

第一个command语句用来测试值, 如果为真, 则执行下面的some commands; 如果为假, 跳过if语句块.

test命令常与if条件语句一起使用, test命令有字符串判断, 逻辑判断, 整数判断，文件判断等, 我们在这里只说说下面/etc/rc文件中用的test测试:

-f /var/somefile 测试后面跟着的参数是否是一个文件，

-d /var/dir 测试后面跟着的参数是否是一个目录，

！-f /var/somefile 对-f /var/somefile的结果取反。

-s /var/file 测试-s后面跟着的文件是否为一个非空文件

下面几个命令用于整数判断: -eq 等于， -ne 不等于， -gt 大于， -ge 大于等于， -lt小于， -le小于等于.

我们回来说说实例：
if [ $1x = shutdownx ]; then
判断第一个参数是否等于shutdown。

if [ “X${pf}” != X”NO” ]; then
这个用来测试从/etc/rc.conf里传递来来的pf参数是否等于NO，如果不等于NO，则执行if语句块中的命令。

在这里，为何在test的比较两边都加上一个X或x呢？这是为了保证即使左边参数为空，操作符两边仍然有占位符。比如当你在/etc/rc.conf里删除了pf这一行，如果在这里不放一个X在前面，测试两边都变成为空，这时test命令就会失败。因此我们在看脚本时自已在脑海中去掉这个X就可以了。

If [ X${nfs_server} = X”YES” –a –s /etc/exports –a \
`sed –e ‘/^#/d’ < /etc/exports | wc –l ` -ne 0 ]; then
这里重点是-a这个参数，这是一个逻辑判断，判断前面的X${nfs_server} = X”YES”是否为真，不为真是马上退出判断，返回假；然后再判断–s /etc/exports是否为真，同上一样，不为真时马上退出判断；最后再判断`sed –e ‘/^#/d’ < /etc/exports | wc –l ` -ne 0 是否为真，只有这三个表达式都为真是这个中括号的结果才为真，有一个为假都是假。具体命令分析就不说明了！

其它两个控制结构是：

case variable in
value1)
command
;;
value2)
command
;;
*)
command
;;
esac
for variable in var_list
do
commands
done

复制代码

我就不详细说明了，具体更多的情况请有兴趣的朋友们参看sh编程。

另一个要提一提的是： >/dev/null 2 >&1 这个语句的意思是将标准输出stdout和标准错误stderr重定向到/dev/null.

下面来简单看看/etc/rc文件：

# $OpenBSD: rc,v 1.241 2004/03/22 15:02:35 cedric Exp $
# System startup script run by init on autoboot
# or after single-user.
# Output and error are redirected to console by init,
# and the console is the controlling terminal.
# Subroutines (have to come first).
# Strip comments (and leading/trailing whitespace if IFS is set)
# from a file and spew to stdout
定义一个shel函数：
stripcom() {
local _file="$1"
local _line
{
while read _line ; do
_line=${_line%%#*} # strip comments
test -z "$_line" && continue
echo $_line
done
} < $_file
}
# End subroutines
stty status '^T'
# Set shell to ignore SIGINT (2), but not children;
# shell catches SIGQUIT (3) and returns to single user after fsck.
忽略信号2, 3
trap : 2
trap : 3 # shouldn't be needed
设置根目录，和命令的查找路径：
HOME=/; export HOME
PATH=/sbin:/bin:/usr/sbin:/usr/bin
export PATH
查看命令是否等于shutdown 如果是，执行下面的语句块：
if [ $1x = shutdownx ]; then
dd if=/dev/urandom of=/var/db/host.random bs=1024 count=64 >/dev/null 2>&1
chmod 600 /var/db/host.random >/dev/null 2>&1
if [ $? -eq 0 -a -f /etc/rc.shutdown ]; then
echo /etc/rc.shutdown in progress...
. /etc/rc.shutdown
echo /etc/rc.shutdown complete.
if [ "X${powerdown}" = X"YES" ]; then
exit 2
fi
# bring carp interfaces down gracefully
for hn in /etc/hostname.carp[0-9]*; do
# Strip off /etc/hostname. prefix
if=${hn#/etc/hostname.}
test "$if" = "carp[0-9]*" && continue
ifconfig $if down
done
else
echo single user: not running /etc/rc.shutdown
fi
exit 0
fi
读取/etc/ccd.conf，设置ccfconf
# Configure ccd devices.
if [ -f /etc/ccd.conf ]; then
ccdconfig -C
fi
设置raid
# Configure raid devices.
for dev in 0 1 2 3; do
if [ -f /etc/raid$dev.conf ]; then
raidctl -c /etc/raid$dev.conf raid$dev
fi
done
# Check parity on raid devices.
raidctl -P all
swapctl -A -t blk
是否为快速启动，如果是，跳过磁盘检测，如果是自动启动，
则使用fscp进行磁盘检测，如果在检测中出现什么错误，
会打印出case中的设置的错误信息：
if [ -e /fastboot ]; then
echo "Fast boot: skipping disk checks."
elif [ $1x = autobootx ]; then
echo "Automatic boot in progress: starting file system checks."
fsck -p
case $? in
0)
;;
2)
exit 1
;;
4)
echo "Rebooting..."
reboot
echo "Reboot failed; help!"
exit 1
;;
8)
echo "Automatic file system check failed; help!"
exit 1
;;
12)
echo "Boot interrupted."
exit 1
;;
130)
# interrupt before catcher installed
exit 1
;;
*)
echo "Unknown error; help!"
exit 1
;;
esac
fi
trap "echo 'Boot interrupted.'; exit 1" 3
mount根文件系统
umount -a >/dev/null 2>&1
mount -a -t nonfs
mount -uw / # root on nfs requires this, others aren't hurt
rm -f /fastboot # XXX (root now writeable)
读取/etc/rc.conf配置文件
# pick up option configuration
. /etc/rc.conf
# set flags on ttys. (do early, in case they use tty for SLIP in netstart)
echo 'setting tty flags'
ttyflags -a
查看/etc/rc.conf中是否将pf设置为启动，如果是，执行if中的语句块：
if [ "X${pf}" != X"NO" ]; then
RULES="block all"
RULES="$RULES\npass on lo0"
RULES="$RULES\npass in proto tcp from any to any port 22 keep state"
RULES="$RULES\npass out proto { tcp, udp } from any to any port 53 keep state"
RULES="$RULES\npass out inet proto icmp all icmp-type echoreq keep state"
RULES="$RULES\npass proto { pfsync, carp }"
case `sysctl vfs.mounts.nfs 2>/dev/null` in
*[1-9]*)
# don't kill NFS
RULES="scrub in all no-df\n$RULES"
RULES="$RULES\npass in proto udp from any port { 111, 2049 } to any"
RULES="$RULES\npass out proto udp from any to any port { 111, 2049 }"
;;
esac
echo $RULES | pfctl -f - -e
fi
如果有/etc/sysctl.conf文件，则读取文件，进行设置：
if [ -f /etc/sysctl.conf ]; then
(
# delete comments and blank lines
set -- `stripcom /etc/sysctl.conf`
while [ $# -ge 1 ] ; do
sysctl $1
shift
done
)
fi
读取/etc/netstat文件
# set hostname, turn on network
echo 'starting network'
. /etc/netstart
如果设置pf为启动，现在检测pf_rules文件是否存在，
如存在，载入规则文件：
if [ "X${pf}" != X"NO" ]; then
if [ -f ${pf_rules} ]; then
pfctl -f ${pf_rules}
fi
fi
mount /usr分区， /var分区：
mount /usr >/dev/null 2>&1
mount /var >/dev/null 2>&1
设置系统随机random：
# if there's no /var/db/host.random, make one through /dev/urandom
if [ ! -f /var/db/host.random ]; then
dd if=/dev/urandom of=/var/db/host.random bs=1024 count=64 \
>/dev/null 2>&1
chmod 600 /var/db/host.random >/dev/null 2>&1
else
dd if=/var/db/host.random of=/dev/urandom bs=1024 count=64 \
> /dev/null 2>&1
dd if=/var/db/host.random of=/dev/arandom bs=1024 count=64 \
> /dev/null 2>&1
fi
# reset seed file, so that if a shutdown-less reboot occurs,
# the next seed is not a repeat
dd if=/dev/urandom of=/var/db/host.random bs=1024 count=64 \
> /dev/null 2>&1
# clean up left-over files
rm -f /etc/nologin
rm -f /var/spool/lock/LCK.*
rm -f /var/spool/uucp/STST/*
(cd /var/run && { test -r dhclient.pid && dhclient_pid=`cat
dhclient.pid`; rm -rf -- *; install -c -m 664 -g utmp /dev/null utmp; test -n "$dhclient_pid" && echo "$dhclient_pid" > dhclient.pid; })
(cd /var/authpf && rm -rf -- *)
将启动信息写入/var/run/dmesg.boot：
# save a copy of the boot messages
dmesg >/var/run/dmesg.boot
echo 'starting system logger'
rm -f /dev/log
测试是否启动named 服务器，是则删除/var/named/dev/log下的日志文件，
使用syslogd_flags来进行日志记录：
if [ "X${named_flags}" != X"NO" ]; then
rm -f /var/named/dev/log
syslogd_flags="${syslogd_flags} -a /var/named/dev/log"
fi
if [ -d /var/empty ]; then
rm -f /var/empty/dev/log
mkdir -p -m 0555 /var/empty/dev
syslogd_flags="${syslogd_flags} -a /var/empty/dev/log"
fi
syslogd ${syslogd_flags}
pf的日志记录：
if [ X"${pf}" != X"NO" -a X"${pflogd_flags}" != X"NO" ]; then
ifconfig pflog0 up
pflogd ${pflogd_flags}
fi
如果启动了named，则启动if语句块中的内容：
# $named_flags is imported from /etc/rc.conf;
# if $named_flags != NO, named is run.
if [ "X${named_flags}" != X"NO" ]; then
if ! cmp -s /etc/rndc.key /var/named/etc/rndc.key ; then
echo -n "rndc-confgen: generating new shared secret... "
if /usr/sbin/rndc-confgen -a -t /var/named >/dev/null 2>&1; then
chmod 0640 /var/named/etc/rndc.key >/dev/null 2>&1
echo done.
else
echo failed.
fi
fi
echo 'starting named'; named $named_flags
fi
# $isakmpd_flags is imported from /etc/rc.conf;
# If $isakmpd_flags == NO or /etc/isakmpd/isakmpd.policy doesn't exist, then
# isakmpd isn't run.
if [ "X${isakmpd_flags}" != X"NO" -a -e /etc/isakmpd/isakmpd.policy ]; then
echo 'starting isakmpd'; isakmpd ${isakmpd_flags}
fi
echo -n 'starting rpc daemons:'
这个是为RPC服务启动的：
# $portmap is imported from /etc/rc.conf;
# if $portmap == YES, the portmapper is started.
if [ X"${portmap}" = X"YES" ]; then
echo -n ' portmap'; portmap
fi
if [ -d /var/yp/binding -a X`domainname` != X ]; then
if [ -d /var/yp/`domainname` ]; then
# yp server capabilities needed...
echo -n ' ypserv'; ypserv ${ypserv_flags}
#echo -n ' ypxfrd'; ypxfrd
fi
echo -n ' ypbind'; ypbind
if [ X"${yppasswdd_flags}" != X"NO" -a -d /var/yp/`domainname` ]; then
# if we are the master server, run rpc.yppasswdd
_host1=`ypwhich -m passwd 2> /dev/null`
_host2=`hostname`
if [ `grep '^lookup' /etc/resolv.conf | grep yp | wc -c` -ne 0 ]; then
_host1=`ypmatch $_host1 hosts | cut -d' ' -f2`
_host2=`ypmatch $_host2 hosts | cut -d' ' -f2 | head -1`
else
_host1=`nslookup $_host1 | grep '^Name: ' | \
sed -e 's/^Name: //'`
_host2=`nslookup $_host2 | grep '^Name: ' | \
sed -e 's/^Name: //'`
fi
if [ "$_host2" = "$_host1" ]; then
echo -n ' rpc.yppasswdd'
rpc.yppasswdd ${yppasswdd_flags}
fi
fi
fi
NFS服务器启动脚本处：
# $nfs_server is imported from /etc/rc.conf;
# if $nfs_server == YES, the machine is setup for being an nfs server
if [ X${nfs_server} = X"YES" -a -s /etc/exports -a \
`sed -e '/^#/d' < /etc/exports | wc -l` -ne 0 ]; then
rm -f /var/db/mountdtab
echo -n > /var/db/mountdtab
echo -n ' mountd'; mountd
echo -n ' nfsd'; nfsd ${nfsd_flags}
if [ X${lockd} = X"YES" ]; then
echo -n ' rpc.lockd'; rpc.lockd
fi
fi
amd启动脚本：
if [ X${amd} = X"YES" -a -e ${amd_master} ]; then
echo -n ' amd'
(cd /etc/amd; amd -l syslog -x error,noinfo,nostats -p \
-a ${amd_dir} `cat ${amd_master}` > /var/run/amd.pid )
fi
rdate启动脚本：
# run rdate before timed
if [ X"${rdate_flags}" != X"NO" ]; then
echo -n ' rdate'; rdate -s ${rdate_flags}
fi
timed时间服务器启动脚本：
# $timed_flags is imported from /etc/rc.conf;
# if $timed_flags == NO, timed isn't run.
if [ "X${timed_flags}" != X"NO" ]; then
echo -n ' timed'; timed $timed_flags
fi
echo '.'
mount -a -t nfs
swapctl -A -t noblk
# /var/crash should be a directory or a symbolic link
# to the crash directory if core dumps are to be saved.
if [ -d /var/crash ]; then
savecore ${savecore_flags} /var/crash
fi
if [ "X${afs}" = X"YES" -a -c /dev/xfs0 ]; then
echo -n 'mounting afs:'
mkdir -p -m 0755 /afs
mount -t xfs /dev/xfs0 /afs
/usr/libexec/afsd ${afsd_flags}
echo ' done.'
fi
磁盘限额的启动脚本：
if [ "X${check_quotas}" = X"YES" ]; then
echo -n 'checking quotas:'
quotacheck -a
echo ' done.'
quotaon -a
fi
# build ps databases
echo -n 'building ps databases:'
echo -n " kvm"
kvm_mkdb
echo -n " dev"
dev_mkdb
echo "."
chmod 666 /dev/tty[pqrstuvwxyzPQRST]*
chown root:wheel /dev/tty[pqrstuvwxyzPQRST]*
# check the password temp/lock file
if [ -f /etc/ptmp ]; then
logger -s -p auth.err \
'password file may be incorrect -- /etc/ptmp exists'
fi
echo clearing /tmp
# prune quickly with one rm, then use find to clean up /tmp/[lq]*
# (not needed with mfs /tmp, but doesn't hurt there...)
(cd /tmp && rm -rf [a-km-pr-zA-Z]* &&
find . ! -name . ! -name lost+found ! -name quota.user \
! -name quota.group -execdir rm -rf -- {} \; -type d -prune)
如果系统上安装了XFREE，存在/usr/X11R6/lib文件，则执行下面的脚本：
# create Unix sockets directories for X if needed and make sure they have
# correct permissions
if [ -d /usr/X11R6/lib ]; then
for d in /tmp/.X11-unix /tmp/.ICE-unix ; do
if [ -d $d ]; then
if [ `ls -ld $d | cut -d' ' -f4` != root ]; then
chown root $d
fi
if [ `ls -ld $d | cut -d' ' -f1` != drwxrwxrwt ]; then
chmod 1777 $d
fi
elif [ -e $d ]; then
echo "Error: $d exists and isn't a directory."
else
mkdir -m 1777 $d
fi
done
fi
设置系统安装级别：
[ -f /etc/rc.securelevel ] && . /etc/rc.securelevel
if [ X${securelevel} != X"" ]; then
echo -n 'setting kernel security level: '
sysctl kern.securelevel=${securelevel}
fi
每次登陆系统时的信息，同freebsd的motd一样，
只不过在freebsd可以在rc.conf中关闭它，
而在openbsd则需要修改此处才能关闭它：
# patch /etc/motd
if [ ! -f /etc/motd ]; then
install -c -o root -g wheel -m 664 /dev/null /etc/motd
fi
T=`mktemp /tmp/_motd.XXXXXXXXXX`
if [ $? -eq 0 ]; then
sysctl -n kern.version | sed 1q > $T
echo "" >> $T
sed '1,/^$/d' < /etc/motd >> $T
cmp -s $T /etc/motd || cp $T /etc/motd
rm -f $T
fi
if [ -f /var/account/acct ]; then
echo 'turning on accounting'; accton /var/account/acct
fi
if [ -f /sbin/ldconfig ]; then
echo 'creating runtime link editor directory cache.'
if [ -d /usr/local/lib ]; then
shlib_dirs="/usr/local/lib $shlib_dirs"
fi
if [ -d /usr/X11R6/lib ]; then
shlib_dirs="/usr/X11R6/lib $shlib_dirs"
fi
ldconfig $shlib_dirs
fi
如果/usr/libexec/vi.recover是可执行文件则执行if语句块中的内容：
if [ -x /usr/libexec/vi.recover ]; then
echo 'preserving editor files'; /usr/libexec/vi.recover
fi
创建ssh的主机密匙，通常在系统第一次启动时创建，
当然如果你删除了/etc/ssh/下的文件，它也会再重新创建一个新的：
if [ ! -f /etc/ssh/ssh_host_dsa_key ]; then
echo -n "ssh-keygen: generating new DSA host key... "
if /usr/bin/ssh-keygen -q -t dsa -f /etc/ssh/ssh_host_dsa_key -N ''; then
echo done.
else
echo failed.
fi
fi
if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
echo -n "ssh-keygen: generating new RSA host key... "
if /usr/bin/ssh-keygen -q -t rsa -f /etc/ssh/ssh_host_rsa_key -N ''; then
echo done.
else
echo failed.
fi
fi
if [ ! -f /etc/ssh/ssh_host_key ]; then
echo -n "ssh-keygen: generating new RSA1 host key... "
if /usr/bin/ssh-keygen -q -t rsa1 -f /etc/ssh/ssh_host_key -N ''; then
echo done.
else
echo failed.
fi
fi
echo -n starting network daemons:
routed启动脚本：
# $routed_flags are imported from /etc/rc.conf.
# If $routed_flags == NO, routed isn't run.
if [ "X${routed_flags}" != X"NO" ]; then
echo -n ' routed'; routed $routed_flags
fi
# $mrouted_flags is imported from /etc/rc.conf;
# If $mrouted_flags == NO, then mrouted isn't run.
if [ "X${mrouted_flags}" != X"NO" ]; then
echo -n ' mrouted'; mrouted $mrouted_flags
fi
bgpd启动脚本：
if [ "X${bgpd_flags}" != X"NO" ]; then
echo -n ' bgpd'; /usr/sbin/bgpd $bgpd_flags
fi
dhcpd服务器启动脚本：
# $dhcpd_flags is imported from /etc/rc.conf
# If $dhcpd_flags == NO or /etc/dhcpd.conf doesn't exist, then dhcpd isn't run.
if [ "X${dhcpd_flags}" != X"NO" -a -f /etc/dhcpd.conf ]; then
touch /var/db/dhcpd.leases
if [ -f /etc/dhcpd.interfaces ]; then
dhcpd_ifs=`stripcom /etc/dhcpd.interfaces`
fi
echo -n ' dhcpd'; /usr/sbin/dhcpd ${dhcpd_flags} ${dhcpd_ifs}
fi
ifconfig设置网络：
if ifconfig lo0 inet6 >/dev/null 2>&1; then
fw=`sysctl -n net.inet6.ip6.forwarding`
if [ "X${fw}" == X"0" ]; then
# $rtsold_flags is imported from /etc/rc.conf;
# If $rtsold_flags == NO, then rtsold isn't run.
if [ "X${rtsold_flags}" != X"NO" ]; then
echo -n ' rtsold'
/usr/sbin/rtsold ${rtsold_flags}
fi
else
# $route6d_flags is imported from /etc/rc.conf;
# If $route6d_flags == NO, then route6d isn't run.
if [ "X${route6d_flags}" != X"NO" ]; then
echo -n ' route6d'
/usr/sbin/route6d ${route6d_flags}
fi
# $rtadvd_flags is imported from /etc/rc.conf;
# If $rtadvd_flags == NO, then rtadvd isn't run.
if [ "X${rtadvd_flags}" != X"NO" ]; then
echo -n ' rtadvd'
/usr/sbin/rtadvd ${rtadvd_flags}
fi
fi
fi
rwhod服务器启动脚本：
# $rwhod is imported from /etc/rc.conf;
# if $rwhod == YES, rwhod is run.
if [ X${rwhod} = X"YES" ]; then
echo -n ' rwhod'; rwhod
fi
打印服务器启动脚本：
if [ "X${lpd_flags}" != X"NO" ]; then
echo -n ' printer'; lpd ${lpd_flags}
fi
邮件服务器sendmail启动脚本：
# $sendmail_flags is imported from /etc/rc.conf;
# If $sendmail_flags == NO or /etc/mailer.conf doesn't exist, then
# sendmail isn't run. We call sendmail with a full path so that
# SIGHUP works. Note that /usr/sbin/sendmail may actually call a
# mailer other than sendmail, depending on /etc/mailer.conf.
if [ "X${sendmail_flags}" != X"NO" -a -s /etc/mailer.conf ]; then
echo -n ' sendmail'; ( /usr/sbin/sendmail ${sendmail_flags} >/dev/null 2>&1 & )
fi
web服务器启动脚本：
if [ "X${httpd_flags}" != X"NO" ]; then
# Clean up left-over httpd locks
rm -f /var/www/logs/{ssl_mutex,httpd.lock,accept.lock}.*
echo -n ' httpd'; /usr/sbin/httpd ${httpd_flags}
fi
FTP服务器启动脚本：
if [ "X${ftpd_flags}" != X"NO" ]; then
echo -n ' ftpd'; /usr/libexec/ftpd ${ftpd_flags}
fi
if [ "X${identd_flags}" != X"NO" ]; then
echo -n ' identd'; /usr/libexec/identd ${identd_flags}
fi
INETD服务器启动脚本：
if [ X${inetd} = X"YES" -a -e /etc/inetd.conf ]; then
echo -n ' inetd'; inetd
fi
SSH服务器启动脚本：
if [ X"${sshd_flags}" != X"NO" ]; then
echo -n ' sshd'; /usr/sbin/sshd ${sshd_flags};
fi
if [ "X${spamd_flags}" != X"NO" ]; then
if [ "X${spamd_grey}" != X"NO" ]; then
spamd_flags="${spamd_flags} -g"
fi
echo -n ' spamd'; /usr/libexec/spamd ${spamd_flags}
/usr/libexec/spamd-setup
if [ "X${spamd_grey}" != X"NO" ]; then
echo -n ' spamlogd'
/usr/libexec/spamlogd
fi
fi
# $rarpd_flags is imported from /etc/rc.conf;
# If $rarpd_flags == NO or /etc/ethers doesn't exist, then
# rarpd isn't run.
if [ "X${rarpd_flags}" != X"NO" -a -s /etc/ethers ]; then
echo -n ' rarpd'; rarpd ${rarpd_flags}
fi
# $bootparamd_flags is imported from /etc/rc.conf;
# If $bootparamd_flags == NO or /etc/bootparams doesn't exist, then
# bootparamd isn't run.
if [ "X${bootparamd_flags}" != X"NO" -a -s /etc/bootparams ]; then
echo -n ' rpc.bootparamd'; rpc.bootparamd ${bootparamd_flags}
fi
# $rbootd_flags is imported from /etc/rc.conf;
# If $rbootd_flags == NO or /etc/rbootd.conf doesn't exist, then
# rbootd isn't run.
if [ "X${rbootd_flags}" != X"NO" -a -s /etc/rbootd.conf ]; then
echo -n ' rbootd'; rbootd ${rbootd_flags}
fi
# $mopd_flags is imported from /etc/rc.conf;
# If $mopd_flags == NO or /tftpboot/mop doesn't exist, then
# mopd isn't run.
if [ "X${mopd_flags}" != X"NO" -a -d /tftpboot/mop ]; then
echo -n ' mopd'; mopd ${mopd_flags}
fi
echo '.'
if [ -x /sbin/wsconsctl -a -f /etc/wsconsctl.conf ]; then
(
# delete comments and blank lines
save_IFS="$IFS"
IFS="
"
set -- `stripcom /etc/wsconsctl.conf`
IFS="$save_IFS"
while [ $# -ge 1 ] ; do
eval /sbin/wsconsctl -w $1
shift
done
)
fi
键盘设置：
if [ -f /sbin/kbd -a -f /etc/kbdtype ]; then
kbd `cat /etc/kbdtype`
fi
kerberosV设置：
# KerberosV master KDC
if [ X${krb5_master_kdc} = X"YES" ]; then
echo 'KerberosV master KDC'
/usr/libexec/kdc &
/usr/libexec/kadmind &
/usr/libexec/kpasswdd &
fi
# KerberosV slave KDC
if [ X${krb5_slave_kdc} = X"YES" ]; then
echo 'KerberosV slave KDC'
/usr/libexec/kdc &
# Remember to enable hpropd in inetd.conf
fi
[ -f /etc/rc.local ] && . /etc/rc.local
echo -n standard daemons:
apmd启动脚本：
# $apmd_flags is imported from /etc/rc.conf;
# don't run daemon if $apmd_flags == NO or /usr/sbin/apmd doesn't exist
if [ "X${apmd_flags}" != X"NO" -a -x /usr/sbin/apmd ]; then
echo -n ' apmd'; /usr/sbin/apmd ${apmd_flags}
fi
if [ X"${sensorsd_flags}" != X"NO" ]; then
echo -n ' sensorsd'; /usr/sbin/sensorsd ${sensorsd_flags}
fi
echo -n ' cron'; cron
echo '.'
date
mouse控制：
if [ "X${wsmoused_flags}" != X"NO" -a -x /usr/sbin/wsmoused ]; then
echo 'starting wsmoused...'; /usr/sbin/wsmoused ${wsmoused_flags}
fi
如果装了x，则这个xdm要设置为启动， X才能用：
# Alternatively, on some architectures, xdm may be started in /etc/ttys.
if [ "X${xdm_flags}" != X"NO" ]; then
echo 'starting xdm...'; /usr/X11R6/bin/xdm ${xdm_flags}
fi
exit 0

复制代码

好了，马马虎虎的说一些，今天上午体检了一下，
然后下午就乱写了这一篇，跟大伙一起读读/etc/rc文件，
了解了解系统启动时的各类信息和系统设置。
各位对这些有不明白的地方可指出来，我将它加进文章去！

欢迎参加openbsd项目，欢迎访问项目主页：http://openbsd.linuxsir.cn

yanyp · 发表于 2004-6-4 12:09:06

好文,多谢

777 · 发表于 2004-6-4 19:52:47

楼主开始学shell了？？

		自动登录	找回密码
密码			注册

openbsd /etc/rc文件导读:

好文,多谢

浏览过的版块