Regex to get string having number in it-CodePudding

I have a string which could be of below of format

dir1/abc001_config.xml
cd23-config.xml
dir1/dir2/efg45_config.xml
dir1/dir2/efg45-config.xml

I need to extract a string which has number attached to it. For eg for above it will be

abc001
cd23
efg45
efg45

Please help with regex. I need to run this in shell. Update: I looked up for answer but could only find the regex which gives the number in a string. grep -Eo \d I understand we need a pattern to be matched, pattern is matched string can be followed by '-' or '' and it can have '/', '', '-' just before it.

CodePudding user response：

you can use this regex

(?:(. \/)|^)(. )(?:(-|_). )$

and to extract your results: $2

For explanation, you can translate this regex by: (my_dir or NULL)(my_searched_string)(- or _ followed by a string)

CodePudding user response：

If regex is not necesary try with:

str_has_num = any(char.isdigit() for char in input_str) #returns boolean if input_str has a number