若问个 awk 正则问题

dgtnk

要匹配数字的话是不是不能用 \d+  而是用 {0-9}+ ？？
谢谢各位

xiaopan3322

Two ways:
1.
[0-9]
matches any digit. Multiple ranges are allowed. E.g., the list [A-Za-z0-9] is a common way to express the idea of "all alphanumeric characters." To include one of the characters `\', `]', `-' or `^' in a character list, put a `\' in front of it. For example:

2.
[:digit:]
Numeric characters.

xiaopan3322

also refer to:
http://www.informatik.uni-hambur ... ilities/gawk_5.html

dgtnk

学习了，非常感谢！回复 3# xiaopan3322