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Martin Hope
user115930
Asked: 2020-03-12 21:34:12 +0800 CST
  • 5

我想将数据拆分如下：

$1       $2           $3               $4  $5  $6 $7       $8   .........
---------------------------------------------------------------------------------------------------
root     tty5                          Wed Dec 18 13:42:28 2019   still logged in             
                      ~~~~~~~~~~~~~    ~~~
                      ^                ^
root     tty5                          Wed Dec 18 11:23:20 2019 - Wed Dec 18 11:24:47 2019  (00:01)    
john     pts/2        xx.xxx.xx.xxx    Tue Sep  3 10:11:31 2019 - Tue Sep  3 10:21:18 2019  (00:09)    
john     pts/3        xx.xxx.xx.xxx    Mon Sep  2 14:42:29 2019 - Mon Sep  2 14:57:33 2019  (00:15)    
john     pts/2        xx.xxx.xx.xxx    Mon Sep  2 14:40:03 2019 - Mon Sep  2 14:45:27 2019  (00:05)    
john     pts/2        xx.xxx.xx.xxx    Mon Sep  2 13:52:09 2019 - Mon Sep  2 14:34:12 2019  (00:42)    
john     pts/3        xx.xxx.xx.xxx    Mon Sep  2 13:14:39 2019 - Mon Sep  2 14:03:24 2019  (00:48)    
john     pts/2        xx.xxx.xx.xxx    Mon Sep  2 13:08:11 2019 - Mon Sep  2 13:23:16 2019  (00:15)    
john     pts/2        xx.xxx.xx.xxx    Mon Sep  2 10:22:27 2019 - Mon Sep  2 11:10:48 2019  (00:48)    
john     pts/2        xx.xxx.xx.xxx    Fri Aug 30 17:25:19 2019 - Fri Aug 30 17:33:34 2019  (00:08)    
john     pts/2        xx.xxx.xx.xxx    Wed Aug 28 10:43:56 2019 - Wed Aug 28 10:52:48 2019  (00:08)    
john     pts/2        xx.xxx.xx.xxx    Tue Aug 27 16:59:30 2019 - Tue Aug 27 17:52:50 2019  (00:53)    
john     pts/2        xx.xxx.xx.xxx    Tue Aug  6 11:06:46 2019 - Tue Aug  6 11:12:05 2019  (00:05)    
john     pts/2        xx.xxx.xx.xxx    Tue Aug  6 10:48:39 2019 - Tue Aug  6 11:01:46 2019  (00:13)    
john     pts/2        xx.xxx.xx.xxx    Tue Aug  6 10:38:18 2019 - Tue Aug  6 10:43:18 2019  (00:05)    
john     pts/2        xx.xxx.xx.xxx    Tue Aug  6 10:28:02 2019 - Tue Aug  6 10:36:04 2019  (00:08)    
john     pts/2        xx.xxx.xx.xxx    Fri Aug  2 14:24:00 2019 - Fri Aug  2 14:24:16 2019  (00:00)    
root     tty5                          Fri Aug  2 14:21:30 2019 - Fri Nov 22 11:03:20 2019 (111+20:41) 
root     tty5                          Fri Jul 26 11:02:17 2019 - Fri Jul 26 11:03:58 2019  (00:01)    
john     pts/3        xx.xxx.xx.xxx    Thu Jul 25 16:24:44 2019 - Thu Jul 25 16:33:36 2019  (00:08)    
john     pts/2        xx.xxx.xx.xxx    Thu Jul 25 16:08:41 2019 - Thu Jul 25 16:33:53 2019  (00:25)

但是，如果 $3 为空，我无法正确获得 $3 和下一个字段的值。例如：

$ last -F | grep -E 'tty|pty|pts' | awk '{print $3}'
Wed                 <- not correct
Wed                 <- not correct
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
xx.xxx.xx.xxx
Fri                 <- not correct
Fri                 <- not correct
xx.xxx.xx.xxx
xx.xxx.xx.xxx

如何使用 awk 或类似的命令行工具正确解析它？

linux string
Martin Hope
user115930
Asked: 2020-01-08 02:27:04 +0800 CST
  • 7

Windows 修补程序的时间戳 ( InstalledOn) 格式不规律，它显示各种类型，如MM-DD-YYYY,和.YYYY/MM/DDYYYYMMDD01d15614cbaee92c

这些值可以从Win32_QuickFixEngineering中获得WMIC。

我想知道什么是时间戳01d15614cbaee92c以及如何解析它。

示例数据：

Update KB955484 10cd4bf3009a2541
Update KB971512 01cd35e8c07bdeb1
Security Update KB2079403 01cd04587fa78c94
Security Update KB3109094 01d15614cbaee92c

谢谢你。

windows wmic