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Question

不遵循StackOverflow最佳实践的道歉

我想要实现的是假设

FILE1.TXT

something blah blah
something blah blah target_pattern blah blah target_pattern

FILE2.TXT

something blah blah
something blah blah target_pattern blah blah

file3.txt

something blah blah
something blah blah target_pattern blah blah target_pattern blah blah target_pattern

我希望输出为

file1.txt target_pattern blah blah target_pattern
file3.txt target_pattern blah blah target_pattern blah blah target_pattern

注意file2.txt有target_pattern但没有重复。 如果你知道如何计算＆＃34; target_pattern＆＃34;每个grep搜索结果的单词，也适用于我。

例如字数：

file1.txt 2
file2.txt 1
file3.txt 3

到目前为止我尝试过的是：

> cat q.txt    
something blah blah    
something blah blah target_pattern blah blah target_pattern    
> cat w.txt
something blah blah
something blah blah target_pattern blah blah    
>cat e.txt    
something blah blah    
something blah blah target_pattern blah blah target_pattern    
> grep -r "target_pattern" ./*    
./e.txt:something blah blah target_pattern blah blah target_pattern    
./q.txt:something blah blah target_pattern blah blah target_pattern    
./w.txt:something blah blah target_pattern blah blah    
> grep -r "target_pattern" ./*|grep "target_pattern"    
./e.txt:something blah blah target_pattern blah blah target_pattern    
./q.txt:something blah blah target_pattern blah blah target_pattern    
./w.txt:something blah blah target_pattern blah blah    
> grep -r "target_pattern" ./*| wc -w    
20    
> grep -r "target_pattern" ./*| wc -l   
3

Answer 1

Grep for 2次target_pattern，中间有一些东西（。*）：

grep -E "target_pattern.*target_pattern" targetpat.txt 
something blah blah target_pattern blah blah target_pattern
something blah blah target_pattern blah blah target_pattern blah blah target_pattern

了解模式匹配/正则表达式以了解更多信息。