shell 过滤 输出

mcumsigscr

Enclosure Device ID: 252
Slot Number: 6
Enclosure position: 0
Device Id: 15
Sequence Number: 2
Media Error Count: 20
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SAS
Raw Size: 558.911 GB [0x45dd2fb0 Sectors]
Non Coerced Size: 558.411 GB [0x45cd2fb0 Sectors]
Coerced Size: 558.406 GB [0x45cd0000 Sectors]


Enclosure Device ID: 252
Slot Number: 7
Enclosure position: 0
Device Id: 15
Sequence Number: 2
Media Error Count: 20
Other Error Count: 0
Predictive Failure Count: 0
Last Predictive Failure Event Seq Number: 0
PD Type: SAS
Raw Size: 558.911 GB [0x45dd2fb0 Sectors]
Non Coerced Size: 558.411 GB [0x45cd2fb0 Sectors]
Coerced Size: 558.406 GB [0x45cd0000 Sectors]

上述两段内容，如何用一句话shell实现，如果“Media Error Count”不等于0，则输出Slot Number后面的数字呢？

yestreenstars

1. [root@localhost ~]# awk -F ': ' '/Slot Number/{t=$2}/Media Error Count/&&$2{print t}' i
   
2. 6
   
3. 7
   
4. [root@localhost ~]#

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mcumsigscr

回复 2# yestreenstars


多谢星辰。后面的&&$2是什么意思？

   

yestreenstars

回复 3# mcumsigscr
&&是逻辑且~
$2是以$2的值作为判断条件，如果$2为0或不存在则为假，反之为真~

   

liion631818

1. 
   
2. lee@ubuntu:/etc$ echo 'Enclosure Device ID: 252
   
3. Slot Number: 6
   
4. Enclosure position: 0
   
5. Device Id: 15
   
6. Sequence Number: 2
   
7. Media Error Count: 20
   
8. Other Error Count: 0
   
9. Predictive Failure Count: 0
   
10. Last Predictive Failure Event Seq Number: 0
    
11. PD Type: SAS
    
12. Raw Size: 558.911 GB [0x45dd2fb0 Sectors]
    
13. Non Coerced Size: 558.411 GB [0x45cd2fb0 Sectors]
    
14. Coerced Size: 558.406 GB [0x45cd0000 Sectors]' |while read line; do IFS=":"; set -- $line; if [[ $1 =~ "Slot Number" ]]; then slot=$2; fi;if [[ $1 =~ "Media Error Count" && ! $2 =~ " 0$" ]]; then echo $slot; fi;done
    
15. 6
    
16. 
    

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mcumsigscr

yestreenstars 发表于 2013-12-13 14:34
回复 3# mcumsigscr
&&是逻辑与~
$2是以$2的值作为判断条件，如果$2为0或不存在则为假，反之为真~

多谢：）

mcumsigscr

liion631818 发表于 2013-12-13 14:37

感谢回复。不过您写的语句貌似Media Error count是0或不是0 都会输出。

liion631818

回复 7# mcumsigscr


    确实，这个代码有问题，修改了
$1 =~ "Media Error Count" && ! $2 =~ " 0$"