Arch linux操作系统之开机启动
上篇文章介绍了Arch操作系统的网络配置，包括动态DHCP以及静态IP获取的配置方法：http：//www.t4x.org/basic/arch-linux-network/,此次介绍一下开机启动的问题。
顺便说一下的Centos 7中的rc.local其实依然是可以使用的，无法使用的原因是由于在/etc/rc.d/rc.local中没有X权限，增加一个执行权限即可。
既然centos中的可以使用，哪么arch linux中其实也是可以使用的。直接copycentos中的资料即可。
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[root@Arch ~]# egrep -v "#" /usr/lib/systemd/system/rc-local.service
[Unit]
Description=/etc/rc.local Compatibility
ConditionFileIsExecutable=/etc/rc.local
After=network.target
[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
RemainAfterExit=yes
SysVStartPriority=99
[Install]
WantedBy=multi-user.target
[root@Arch ~]# touch /etc/rc.local
[root@Arch ~]# chmod +x /etc/rc.local
[root@Arch ~]# systemctl enable rc-local.service
Created symlink from /etc/systemd/system/multi-user.target.wants/rc-local.service to /usr/lib/systemd/system/rc-local.service.
[root@Arch ~]# cat /etc/rc.local
ulimit -HSn 30961 && echo 'right' >>/tmp/right.txt || echo 'wrong' >>/tmp/wrong.txt
printf $(ulimit -n) >>/tmp/ulimit1.txt 2>&1
ulimit -HSn 3096
printf $(ulimit -n) >>/tmp/ulimit.txt 2>&1
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测试：
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[root@Arch ~]# ls -al /usr/lib/systemd/system/rc-local.service
-rw-r--r-- 1 root root 675 Apr 5 23:24 //usr/lib/systemd/system/rc-local.service
[root@Arch ~]# chmod +x /usr/lib/systemd/system/rc-local.service
[root@Arch ~]# ls -al /usr/lib/systemd/system/rc-local.service
-rwxr-xr-x 1 root root 675 Apr 5 23:24 //usr/lib/systemd/system/rc-local.service
[root@Arch ~]# systemctl start rc-local.service
Job for rc-local.service failed. See "systemctl status rc-local.service" and "journalctl -xe" for details.
[root@Arch ~]# systemctl status rc-local.service
● rc-local.service - /etc/rc.local Compatibility
Loaded: loaded (/usr/lib/systemd/system/rc-local.service; enabled; vendor preset: disabled)
Active: failed (Result: exit-code) since Sun 2015-04-05 23:30:27 UTC; 9s ago
Process: 246 ExecStart=/etc/rc.local start (code=exited, status=203/EXEC)
Apr 05 23:30:27 Arch systemd[1]: rc-local.service: control process exited, code=exited status=203
Apr 05 23:30:27 Arch systemd[1]: Failed to start /etc/rc.local Compatibility.
Apr 05 23:30:27 Arch systemd[1]: Unit rc-local.service entered failed state.
Apr 05 23:30:27 Arch systemd[1]: rc-local.service failed.
[root@Arch ~]# ls -al /usr/lib/systemd/system/sshd.service #排除权限原因
-rw-r--r-- 1 root root 410 Mar 20 04:52 /usr/lib/systemd/system/sshd.service
[root@Arch ~]# journalctl -xe
Apr 05 23:29:34 Arch systemd[1]: Configuration file /usr/lib/systemd/system/rc-local.service is marked executable. Please remove exec
Apr 05 23:29:38 Arch systemd[1]: rc-local.service: control process exited, code=exited status=203
-- Subject: Unit rc-local.service has failed
-- Unit rc-local.service has failed.
Apr 05 23:29:38 Arch systemd[1]: Unit rc-local.service entered failed state.
Apr 05 23:29:38 Arch systemd[1]: rc-local.service failed.
[root@Arch ~]# systemctl start rc-local.service
Warning: Unit file of rc-local.service changed on disk, 'systemctl daemon-reload' recommended.
Job for rc-local.service failed. See "systemctl status rc-local.service" and "journalctl -xe" for details.
[root@Arch ~]# systemctl | grep rc-loca
rc-local.service loaded active exited /etc/rc.local Compatibility
[root@Arch ~]# cat /etc/rc.local
#!/bin/sh
[root@Arch ~]# egrep -v "#" /etc/systemd/system/multi-user.target.wants/rc-local.service
[Unit]
Description=/etc/rc.local Compatibility
ConditionFileIsExecutable=/etc/rc.local
After=network.target
[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
StandardOutput=tty
RemainAfterExit=yes
SysVStartPriority=99
[Install]
WantedBy=multi-user.target
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rc.loca在拱中无法启动的原因是由于我在rc.loca中没有设置＃！/ bin / sh的导致的！
结束
