How to find a substring in a string?

**Jason Voorhees** · 07-09-2012

I want to write a code such that I would be able to find data on my Mac using the string name of the file or the folder. For example I have a file with string name as ‘27.5.2012/11:6:40 scooby 50:67:f0:e7:d9:1c N/A 0.0 0.0’. Now If I just type ‘50:67:f0:e7:d9:1c’, I want the whole string to appear. In other words, I want to make a code that will find part of string from my search. Can someone help me with it?

**Lennon Norris** · 07-09-2012

I have devised a code for your requirement, but I don’t think that it is much accurate. There is still need for some more work on it, but you can have it for now.

**Rashid** · 07-09-2012

he code that Lennon Norris has provided works well but it faces one problem, which makes it go into loops sometimes. Even if the proper strings are found with desired sub strings, it again starts searching for them again and it shows same results again. I studied the concept and the logic behind the code that Lennon Norris devised and I designed my own code.

**Sib Bachchan** · 08-09-2012

That was a good piece of code that you have provided Rashid, it actually works. But again it fails to find the strings which have more than one space in the MAC address. I think that it is the only big disadvantage of it. I have been playing around with the variable and found a breakthrough in it. I replaced some part of the code with my own statements. Now the code looks like this and it works for data with two spaces in MAC address.