Identify the special characters in file in unix
 

Hi Friends ,
Need your help to solve this issue . Need to identify the special characters in a file . I tried the below way .

Step 1 :
Create data file test.txt


Steps 2 : run the syntax
it should give you the below record ,bcz it has a special character @
104231840,475,20180115,20180331,192,Salt 2018

But it does not . Can you please let me know what is wrong in this

probably you missed some chars, like space (from your regexp).

thats a tricky one,

might not be the exact what you're looking for though. could just look for the special char.
all the other are canceled out, no need to even look for them. just set it up to look for the special char(s) you're looking for.

This way i have to identify all the special characters and hard code them .It will not fulfill my requirement.
Do not understand why the below syntax does not give the correct result .

did you notice you're identifying all of the other characters and not getting your desired results? that is all I know about that one. let research it?

Repeating the same question will not help. Would be nice to explain what should be the correct result, what did you get instead. Also did you check post #2?

I think your best bet is to work on the basics. First figure out what a pattern is, or what does a pattern consist of,
or what qualifications does something have to have in order to be defined as a pattern? Whence you figure that out,
then move onto the next step, finding a program that searches for patterns and learn how to use it to do just that.
If you have any difficulties arise then seek guidance for same.