正则表达式-Shell脚本

Question

I have a file which looks like this : 我有一个看起来像这样的文件：

{
    "0" : NumberLong(654654),
    "1" : NumberLong(31321),
    "2" : NumberLong(44534564),
    "3" : NumberLong(464564645),
}

My output should be something like this : 我的输出应该是这样的：

I tried to do this : 我试图这样做：

grep -Po ' NumberLong\("\K[^"]*' file

But it doesn't seem to work for me. 但这似乎对我不起作用。

Answer 1

Try this grep: 试试这个grep：

grep -Po ' NumberLong\(\K[^)]*' file
654654
31321
44534564
464564645

OR this grep: 或这个grep：

grep -Po ' NumberLong\(\K\d+' file
654654
31321
44534564
464564645

Answer 2

尝试

grep -Po ' NumberLong\(\K\d+' file

Answer 3

使用此命令： grep -Po "(?<=\\()[^)]+" data.txt 654654 31321 44534564 464564645