把每行特定字符开始，特定字符结束的所有匹配字符串都打印出来

linlone

比如：

1. 
   
2. 
   
3. 2015-10-29 13:53:26     [1972776081]    {text:5 step:5}  [BC0:time:5 5 0 memory num:2000-0-0]    [BC2:2 vcc timeout]      {num:0}   total:0.012118
   
4. 2015-10-29 13:55:26     [1972776876]    {text:9}     [BC4:time:8 5 0 memory num:2000-0-0]    [BC5:2 vcc timeout]   [BC9:2 vcc timeout]     {num:0}   total:0.012222
   
5. 2015-10-29 13:57:26     [1972776899]    {text:2}  [BC2:time:2 5 0 memory num:1000-0-0]    [BC3:2 vcc timeout]      {num:0}   total:0.012289
   
6. 
   

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提取“[BC数字:”开始，“]”结束的所有匹配的字符串，期望输出：

1. 
   
2. [BC0:time:5 5 0 memory num:2000-0-0]    [BC2:2 vcc timeout]
   
3. [BC4:time:8 5 0 memory num:2000-0-0]    [BC5:2 vcc timeout]   [BC9:2 vcc timeout]
   
4. [BC2:time:2 5 0 memory num:1000-0-0]    [BC3:2 vcc timeout]
   

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ly5066113

回复 1# linlone

1. awk -F '[][]' '{for(i=2;i<NF;i++)if($i~/^BC[0-9]*:/)printf "["$i"] ";print ""}' file

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jason680

回复 1# linlone

$ awk '{s="";while(match($0,/(\[BC[^]]+\])/,a)){s=s a[1]"  ";$0=substr($0,RSTART+RLENGTH-2)}print s}' FILE
[BC0:time:5 5 0 memory num:2000-0-0]  [BC2:2 vcc timeout]  
[BC4:time:8 5 0 memory num:2000-0-0]  [BC5:2 vcc timeout]  [BC9:2 vcc timeout]  
[BC2:time:2 5 0 memory num:1000-0-0]  [BC3:2 vcc timeout]  

$ perl -lane 'print join"  ",m/\[BC.+?\]/g' FILE
[BC0:time:5 5 0 memory num:2000-0-0]  [BC2:2 vcc timeout]
[BC4:time:8 5 0 memory num:2000-0-0]  [BC5:2 vcc timeout]  [BC9:2 vcc timeout]
[BC2:time:2 5 0 memory num:1000-0-0]  [BC3:2 vcc timeout]

   

haooooaaa

awk 4

1. awk -vFPAT='\\[BC[^]]*\\]' '$1=$1' a

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yjh777

4 楼方法好，学习了