Hi
The string must be changed. Tools like awk, sed, and a shell script in the built-in programming language are suitable
This example on 'sed'
sed -r 's/([^,]*,){2}bcd,.*,(.){4}.*/&,\2/'
REMARK:...
If you want to match characters in a certain position with sed you have to create a basic regular expression that matches the desired number of characters at the start of the line followed by the...