systemd 啟動得 service,值行的 script,其中有 echo 的,都 echo 到 journald 裡。
所以要把 journald 打開。
/etc/systemd/journald.conf其中,第一個 config option:
[Journal] Storage=auto ...可以選...
- “none” :
This effectively turns off journaling. Any log message received will be dropped. However, any redirection to console, syslog, or kernel log buffer would still be in effect. - “volatile” :
Journal data is saved in memory and temporarily available under the /run/log/journal directory. The directory will be created if it does not exist. - “persistent” :
Journal data is saved persistently on disk under the /var/log/journal directory. The directory will be created if it does not exist. If the disk volume is not accessible or writable, the files will be created under /run/log/journal. - “auto” :
The storage mode is like persistent—data will be written to disk; however, if the /var/log/journal directory does not exist, it will be created under /run/log/journal.
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