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编辑 # /etc/rc.local 文件，在文件 exit 0 之前添加执行的命令
# cat /etc/rc.local
#!/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.
cd /root/caddy
./caddy &
exit 0
如下两条命令就是添加进去的
cd /root/caddy
./caddy &