我认为还有一种更优雅的解决方法:将stdout/stderr发送给具有标识符的syslog，并指示syslog管理器按程序拆分其输出名称.

I think there's a more elegant way to solve the problem: send the stdout/stderr to syslog with an identifier and instruct your syslog manager to split its output by program name.

在systemd服务单元文件中使用以下属性:

Use the following properties in your systemd service unit file:

StandardOutput=syslog
StandardError=syslog
SyslogIdentifier=<your program identifier> # without any quote

然后，假设您的发行版正在使用rsyslog管理syslog，请在/etc/rsyslog.d/<new_file>.conf中创建一个文件，其内容如下:

Then, assuming your distribution is using rsyslog to manage syslogs, create a file in /etc/rsyslog.d/<new_file>.conf with the following content:

if $programname == '<your program identifier>' then /path/to/log/file.log
& stop

现在使日志文件可通过syslog写入:

Now make the log file writable by syslog:

# ls -alth /var/log/syslog 
-rw-r----- 1 syslog adm 439K Mar  5 19:35 /var/log/syslog
# chown syslog:adm /path/to/log/file.log

重新启动rsyslog(sudo systemctl restart rsyslog)并享受！您的程序stdout/stderr仍可通过journalctl(sudo journalctl -u <your program identifier>)获得，但它们也将在您选择的文件中提供.

Restart rsyslog (sudo systemctl restart rsyslog) and enjoy! Your program stdout/stderr will still be available through journalctl (sudo journalctl -u <your program identifier>) but they will also be available in your file of choice.

通过archive.org来源