# View log through journald, why could not see the log about application, I only see the log about biOS and cpu?

**URL:** <https://forum.webosose.org/t/view-log-through-journald-why-could-not-see-the-log-about-application-i-only-see-the-log-about-bios-and-cpu/1187>\
**Category:** Uncategorized\
**Created:** [August 31, 2020, 9:50am UTC](https://forum.webosose.org/t/view-log-through-journald-why-could-not-see-the-log-about-application-i-only-see-the-log-about-bios-and-cpu/1187 "2020-08-31T09:50:31Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![gengxiaoquan](https://avatars.discourse-cdn.com/v4/letter/g/d2c977/32.png) [@gengxiaoquan](https://forum.webosose.org/u/gengxiaoquan)\
**Post date:** [August 31, 2020, 9:50am UTC](https://forum.webosose.org/t/view-log-through-journald-why-could-not-see-the-log-about-application-i-only-see-the-log-about-bios-and-cpu/1187/1 "2020-08-31T09:50:31Z")

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I could not see the log about application

 ![微信图片_20200831175014](https://canada1.discourse-cdn.com/flex031/uploads/developer1/original/1X/42ab089da9b2f9996bf16d97c4e2acbcb15b6752.png) through journald,

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**Author:** ![youngyun](https://yyz1.discourse-cdn.com/flex031/user_avatar/forum.webosose.org/youngyun/32/377_2.png) [@youngyun](https://forum.webosose.org/u/youngyun)\
**Post date:** [September 2, 2020, 6:44am UTC](https://forum.webosose.org/t/view-log-through-journald-why-could-not-see-the-log-about-application-i-only-see-the-log-about-bios-and-cpu/1187/2 "2020-09-02T06:44:44Z")

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Dear @gengxiaoquan

Please read journald page.  
I think below page may be helpful.  
[https://www.webosose.org/docs/guides/development/logging/viewing-logs/viewing-logs-journald/#follow-logs](https://www.webosose.org/docs/guides/development/logging/viewing-logs/viewing-logs-journald/#follow-logs)

Thanks.

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**Author:** ![gengxiaoquan](https://avatars.discourse-cdn.com/v4/letter/g/d2c977/32.png) [@gengxiaoquan](https://forum.webosose.org/u/gengxiaoquan)\
**Post date:** [September 3, 2020, 10:30am UTC](https://forum.webosose.org/t/view-log-through-journald-why-could-not-see-the-log-about-application-i-only-see-the-log-about-bios-and-cpu/1187/3 "2020-09-03T10:30:02Z")

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oh thank you , I have another question to ask, I filter the log about crash through journalctl. I also find rdxd api in LS2 API, Can I use it to generate crash reports？Where are the generated reports？In addition， I see .log file in previous log packs, can I generate the .log file of today?Looking forward to your reply

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**Author:** ![nicolas](https://avatars.discourse-cdn.com/v4/letter/n/67e7ee/32.png) [@nicolas](https://forum.webosose.org/u/nicolas)\
**Post date:** [September 4, 2020, 2:24am UTC](https://forum.webosose.org/t/view-log-through-journald-why-could-not-see-the-log-about-application-i-only-see-the-log-about-bios-and-cpu/1187/4 "2020-09-04T02:24:38Z")

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You can find a generated log file under the "/var/log/" directory. As far as I found, you can set a logging period in /etc/logrotate.conf or /etc/logrotate.d. But I don't know exactly. 🙂

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**Author:** ![gengxiaoquan](https://avatars.discourse-cdn.com/v4/letter/g/d2c977/32.png) [@gengxiaoquan](https://forum.webosose.org/u/gengxiaoquan)\
**Post date:** [September 4, 2020, 3:23am UTC](https://forum.webosose.org/t/view-log-through-journald-why-could-not-see-the-log-about-application-i-only-see-the-log-about-bios-and-cpu/1187/5 "2020-09-04T03:23:56Z")

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thank you for your answer . Do you know the previous logs？Is it generated automatically or need some commands?Is it generated every day?