Ubuntu 16.04重新启动后,如何查找以前的引导日志?

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$ journalctl -b -1



在不重新安装Ubuntu的情况下创建多个启动日志


$ sudo mkdir -p /var/log/journal


$ sudo systemd-tmpfiles --create --prefix /var/log/journal


Cannot set file attribute for '/var/log/journal', value=0x00800000, mask=0x00800000: Operation not supported



简而言之,删除注释,并修改以下行:

 
storage=persistent



显示以前引导的列表


$ journalctl --list-boots


-15 58a9e56135564cd8a52d547b19e76bf5 Fri 2018-02-02 18:34:35 MST-Fri 2018-02-02 23:07:14 M


-14 3514e056440341b1b6e5f03d109681bc Sat 2018-02-03 06:05:12 MST-Sat 2018-02-03 08:07:44 M


-13 0d1a32dc275348589f5ecdc72180c018 Sat 2018-02-03 08:08:05 MST-Sat 2018-02-03 08:08:34 M


-12 74159b593f3a401589ee6bd78e31684b Sat 2018-02-03 08:08:51 MST-Sun 2018-02-04 08:32:09 M


-11 4b394a9aad584ab2bfabe3b77eeed78f Sun 2018-02-04 08:32:26 MST-Mon 2018-02-05 16:54:02 M


-10 8e461ed2593c4fd896ca3b71eb3c0fba Mon 2018-02-05 16:54:34 MST-Tue 2018-02-06 03:54:30 M


 -9 ec7ba0e4dfe241c0b9c978d278fcca6d Tue 2018-02-06 03:54:47 MST-Tue 2018-02-06 16:25:02 M


 -8 b5c110267c214c38b63d0a367197d118 Tue 2018-02-06 16:25:19 MST-Thu 2018-02-08 16:49:03 M


 -7 75c3b117ac6a4de984dc3ced15edb7f8 Thu 2018-02-08 16:49:22 MST-Fri 2018-02-09 03:51:09 M


 -6 7338bd1007bc42dda5c8667eeefe1a59 Fri 2018-02-09 03:51:26 MST-Fri 2018-02-09 16:55:52 M


 -5 4b6cd0121327454ca3db035c7ed42df6 Fri 2018-02-09 16:56:09 MST-Sat 2018-02-10 07:55:14 M


 -4 0d56207f9ec0405ca3a3fd638334de2f Sat 2018-02-10 07:55:32 MST-Mon 2018-02-12 22:16:05 M


 -3 0f230cc546fd4aec8f5233e0074ab3e1 Tue 2018-02-13 03:57:20 MST-Wed 2018-02-14 22:58:56 M


 -2 c0d2c0141dd840cbab75d3c2254f8781 Wed 2018-02-14 22:59:13 MST-Sat 2018-02-17 22:46:14 M


 -1 aafb2573a6374e019a7165cb8eee74a0 Sun 2018-02-18 06:02:03 MST-Mon 2018-02-19 04:16:36 M


 0 8462f1969c6f4d61973e7e245014b846 Mon 2018-02-19 04:16:53 MST-Tue 2018-02-20 18:51:42 M



显示上次启动日志


$ journalctl -b-1


-- Logs begin at Fri 2018-02-02 18:34:35 MST, end at Thu 2018-03-01 16:43:25 MST. --


Feb 28 20:03:15 alien systemd-journald[290]: Runtime journal (/run/log/journal/) is 8.0M, 


Feb 28 20:03:15 alien kernel: Linux version 4.14.23-041423-generic (kernel@kathleen) (gcc 


Feb 28 20:03:15 alien kernel: Command line: BOOT_IMAGE=/boot/vmlinuz-4.14.23-041423-generi


Feb 28 20:03:15 alien kernel: KERNEL supported cpus:


Feb 28 20:03:15 alien kernel: Intel GenuineIntel


Feb 28 20:03:15 alien kernel: AMD AuthenticAMD


Feb 28 20:03:15 alien kernel: Centaur CentaurHauls


Feb 28 20:03:15 alien kernel: x86/fpu: Supporting XSAVE feature 0x001: 'x87 floating point


Feb 28 20:03:15 alien kernel: x86/fpu: Supporting XSAVE feature 0x002: 'SSE registers'


Feb 28 20:03:15 alien kernel: x86/fpu: Supporting XSAVE feature 0x004: 'AVX registers'


Feb 28 20:03:15 alien kernel: x86/fpu: Supporting XSAVE feature 0x008: 'MPX bounds registe


Feb 28 20:03:15 alien kernel: x86/fpu: Supporting XSAVE feature 0x010: 'MPX CSR'


Feb 28 20:03:15 alien kernel: x86/fpu: xstate_offset[2]: 576, xstate_sizes[2]: 256


Feb 28 20:03:15 alien kernel: x86/fpu: xstate_offset[3]: 832, xstate_sizes[3]: 64


Feb 28 20:03:15 alien kernel: x86/fpu: xstate_offset[4]: 896, xstate_sizes[4]: 64


Feb 28 20:03:15 alien kernel: x86/fpu: Enabled xstate features 0x1f, context size is 960 b


Feb 28 20:03:15 alien kernel: e820: BIOS-provided physical RAM map:


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000000000000-0x0000000000057fff] usabl


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000000058000-0x0000000000058fff] reser


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000000059000-0x000000000009dfff] usabl


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x000000000009e000-0x000000000009ffff] reser


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000000100000-0x0000000030a5ffff] usabl


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000030a60000-0x0000000030a71fff] reser


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000030a72000-0x0000000030a89fff] usabl


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000030a8a000-0x0000000030a8afff] ACPI 


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000030a8b000-0x0000000030ad4fff] reser


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000030ad5000-0x0000000030b2dfff] usabl


Feb 28 20:03:15 alien kernel: BIOS-e820: [mem 0x0000000030b2e000-0x0000000031099fff] reser


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