linux service 自启动
refer： https://blog.csdn.net/dreamstar613/article/details/124063201
1 需要编辑文件：
<span style="color:#f5ab35">#</span> 编辑服务单元文件
sudo vim /etc/systemd/system/myservice.service内容如下：
[Unit]
Description=My Service
After=network.target
[Service]
ExecStart=/path/to/your/service
Type=simple
[Install]
WantedBy=multi-user.target例如：
[Unit]
Description=My Service Start Trojan
After=network.target
[Service]
WorkingDirectory=/workspace/coding_tools/trojan/
ExecStart=/workspace/coding_tools/trojan/trojan
Type=simple [Install]
WantedBy=multi-user.target
2.保存好，重新加载：
sudo systemctl daemon-reload3.启动：
sudo systemctl enable myservice手动启动：
sudo systemctl start myservice手动停止：
sudo systemctl stop myservice重启：
sudo systemctl restart myservice查看状态：
sudo systemctl status myservice不能这样写：
<span style="color:#00e0e0">[Unit]</span>
Description=My Service Start Trojan
After=network.target
<span style="color:#00e0e0">[Service]</span>
ExecStart=/home/linlin/trojan
Type=simple
<span style="color:#00e0e0">[Install]</span>
WantedBy=multi-user.target因为我的可执行文件start_trojan是一个需要到文件夹后在执行的文件：service是需要绝对路径，而不是相对路径。参考：https://blog.csdn.net/dreamstar613/article/details/124063201
如果没有启动成功，使用命令查看日志：
journalctl -u myservice
修改文件后，需要重启：
sudo<span style="color:#dcc6e0"> system</span>ctl daemon-reload
sudo<span style="color:#dcc6e0"> system</span>ctl start myservice例如我终于成功后：
sudo systemctl daemon-reload
sudo systemctl start myservice
linlin@linlin-i5:/workspace/coding_tools/trojan$ lsof -i:1090
COMMAND PID USER FD TYPE DEVICE SIZE/OFF NODE NAME
firefox-b 6553 linlin 68u IPv4 558344 0t0 TCP localhost:40500->localhost:1090 (ESTABLISHED)
firefox-b 6553 linlin 91u IPv4 548605 0t0 TCP localhost:40508->localhost:1090 (ESTABLISHED)
firefox-b 6553 linlin 96u IPv4 568903 0t0 TCP localhost:40512->localhost:1090 (ESTABLISHED)可以看到之前失败的日志还保存着：
journalctl -u myservice
11月 19 14:08:37 linlin-i5 systemd[1]: Started My Service Start Trojan.
11月 19 14:08:37 linlin-i5 systemd[1112]: myservice.service: Failed to execute /home/linlin/start_trojan: Exec format error
11月 19 14:08:37 linlin-i5 systemd[1112]: myservice.service: Failed at step EXEC spawning /home/linlin/start_trojan: Exec format error
11月 19 14:08:37 linlin-i5 systemd[1]: myservice.service: Main process exited, code=exited, status=203/EXEC
11月 19 14:08:37 linlin-i5 systemd[1]: myservice.service: Failed with result 'exit-code'.
11月 19 14:14:37 linlin-i5 systemd[8718]: myservice.service: Failed to execute /home/linlin/start_trojan: Exec format error
11月 19 14:14:37 linlin-i5 systemd[8718]: myservice.service: Failed at step EXEC spawning /home/linlin/start_trojan: Exec format error
11月 19 14:14:37 linlin-i5 systemd[1]: Started My Service Start Trojan.
11月 19 14:14:37 linlin-i5 systemd[1]: myservice.service: Main process exited, code=exited, status=203/EXEC
11月 19 14:14:37 linlin-i5 systemd[1]: myservice.service: Failed with result 'exit-code'.
11月 19 14:16:15 linlin-i5 systemd[8763]: myservice.service: Failed to execute /home/linlin/start_trojan: Exec format error
11月 19 14:16:15 linlin-i5 systemd[8763]: myservice.service: Failed at step EXEC spawning /home/linlin/start_trojan: Exec format error
11月 19 14:16:15 linlin-i5 systemd[1]: Started My Service Start Trojan.
11月 19 14:16:15 linlin-i5 systemd[1]: myservice.service: Main process exited, code=exited, status=203/EXEC
11月 19 14:16:15 linlin-i5 systemd[1]: myservice.service: Failed with result 'exit-code'.
11月 19 14:16:30 linlin-i5 systemd[1]: Started My Service Start Trojan.
11月 19 14:16:30 linlin-i5 trojan[8823]: Welcome to trojan 1.16.0
11月 19 14:16:30 linlin-i5 trojan[8823]: [2023-11-19 14:16:30] [FATAL] fatal: config.json: cannot open file
11月 19 14:16:30 linlin-i5 trojan[8823]: [2023-11-19 14:16:30] [FATAL] exiting. . .
11月 19 14:16:30 linlin-i5 systemd[1]: myservice.service: Main process exited, code=exited, status=1/FAILURE
11月 19 14:16:30 linlin-i5 systemd[1]: myservice.service: Failed with result 'exit-code'.
11月 19 14:18:37 linlin-i5 systemd[1]: Started My Service Start Trojan.
11月 19 14:18:37 linlin-i5 trojan[8887]: Welcome to trojan 1.16.0
11月 19 14:18:37 linlin-i5 trojan[8887]: [2023-11-19 14:18:37] [WARN] trojan service (client) started at 127.0.0.1:1090
11月 19 14:18:38 linlin-i5 trojan[8887]: [2023-11-19 14:18:38] [ALL] 127.0.0.1:40500 incoming connection
11月 19 14:18:38 linlin-i5 trojan[8887]: [2023-11-19 14:18:38] [INFO] 127.0.0.1:40500 requested connection to tch271958.tch.poe.com:443
11月 19 14:18:38 linlin-i5 trojan[8887]: [2023-11-19 14:18:38] [ALL] 127.0.0.1:40500 demo2.nextc1oud.com is resolved to 154.39.65.3