Shell Programming and Scripting

Hi All,
Please can you help me with below, i have a file with records ( eg of one record below)
Record R1 - The field separtaor between records is | (Pipe)

Code:

 |123|Mukesh\r\n|Vivek"sharma|

Now i want to do the following for each record in the file
if there is any field ( lets say field is F1) in the record having \r\n ( carriage return and new line coming together ) or single quotes i have to do the following
Replace single quotes with Double quotes
and put the entire field in opening and closing double quotes like this "F1"
so the output should be like for record R1

Code:

|123|"Mukesh\r\n"|"Vivek""sharma"|

Moderator's Comments:

Please use CODE tags as required by forum rules! Enclosing the ENTIRE post in CODE tags isn't the right way either!

Any attempts/ideas/thoughts from your side?

Are those the verbatim ASCII control characters <CR> (\r, 0x0D, ^M) and <NL> (\n, 0x0A, ^J), or two chars each, "\" and "r" or "\" and "n"?

Please note that there's NO single quote in field 4
so your spec wouldn't apply.

HI Rudi,

Thanks for the response
\n\r are ascii control characters, also I meant double quotes where I have mentioned single, I am not proficient in Unix and primarily a PL/SQL developer so don't have an idea how to proceed properly however I could only think of replacement of double quotes

Code:

 sed s/\"/\""/ a.txt > b.txt

So, in fact the file would look like

Code:

  |123|Mukesh^M
|Vivek"sharma|

?