Grep正则表达式只能选择10个字符

使用 \K （来自Perl-regex的模式 ）放弃先前匹配的字符。 $ b

或

DEMO

I have a log file that I'm grep(ing) to select certain character.

The pattern of the log file looks like this

What I'm interested in only the 10 character string present between [ and --

I have successfully managed to compose the regex that look like this

I have cross checked the above regex over here.

But unfortunately the regex does not yield any output

But I'm mostly interested in the 10 character but the above regex yield 'Message Sent [' + 10 character + --

Any Clue ?

Use \K (pattern from Perl-regex) to discard the previously matched chars.

or

DEMO