一、问题
ubuntu-18.04及以上系统取消了rc.local自启动功能,因此不能像ubuntu16一样通过编辑rc.local来设置开机启动脚本,通过下列简单设置后,可以使rc.local重新发挥作用。
二、方法
1、建立rc-local.service文件
sudo vim /etc/systemd/system/rc-local.service
2、输入如下内容
[Unit]
Description=/etc/rc.local Compatibility
ConditionPathExists=/etc/rc.local
[Service]
Type=forking
ExecStart=/etc/rc.local start
TimeoutSec=0
StandardOutput=tty
RemainAfterExit=yes
SysVStartPriority=99
[Install]
WantedBy=multi-user.target
3、创建rc.local
sudo vim /etc/rc.local
4、输入如下内容
#!/bin/sh -e
#
# rc.local
#
# This script is executed at the end of each multiuser runlevel.
# Make sure that the script will "exit 0" on success or any other
# value on error.
#
# In order to enable or disable this script just change the execution
# bits.
#
# By default this script does nothing.
echo "成功启动CAN驱动配置" > /usr/local/test.log
sudo modprobe can
sudo modprobe can_raw
sudo modprobe mttcan
sudo ip link set can0 type can bitrate 500000
sudo ip link set up can0
exit 0
5、添加rc.local可执行权限
sudo chmod +x /etc/rc.local
6、启动服务
sudo systemctl enable rc-local
7、启动服务查看启动状态
sudo systemctl start rc-local.service
sudo systemctl status rc-local.service
8、重启,若在/usr/local下能够看到 test.log文件说明自启动已经成功了!