SED command in linux to edit a file with script [duplicate] - regex

Question

This question already has answers here:
Using Sed to expand environment variables inside files
(2 answers)
Closed 8 years ago.
I have a file name temp.txt with content as
ANSWER "1234:IDGK"
ANSWER "123456:DEF"
I need to change answer "1234:$1"with input parameter from script.
Right now, I am using the code below in script (run.sh) to change the content in temp.txt
#!/bin/bash
Prompt1=$1
sed -i -e "s/\(1234:\).*/\1$1/" temp.txt
But when I run the script with any input value {irrespective of length of value} " is over written in temp.txt.
for example
./run.sh ABCDEF
temp.txt is updated as
ANSWER "1234:ABCDEF
ANSWER "123456:DEF"
The expected output is
ANSWER "1234:ABCDEF"
ANSWER "123456:DEF"
Note: input value in file will always not be same so I can't go with
sed s/IDGK/ABCDEF/g
Please suggest correct SED command which will replace the only text and not the ".

Answer 1

Since you don't want the trailing double quote deleted, you need to exclude it from the substitution. For example:
sed -i -e "s/\(1234:\).*\(.\)/\1$1\2/" temp.txt
The second capture matches the last character on the line, the double quote.
Or:
sed -i -e 's/\(1234:\)[^"]*'"/\1$1/" temp.txt
Instead of matching any character, only match characters that are not double quotes. Note the use of single quotes and double quotes to ensure the double quote in the negated character class is a double quote. Alternatively again:
sed -i -e "s/\(1234:\)[^\"]*/\1$1/" temp.txt
This escapes the double quote with a backslash. It isn't the way I'd do it, but it will work fine.

Answer 2

You can try this.
sed -i -e 's/\(1234:\).*/\1'$1'"/' temp.txt
Last character will be the double quotes. So you can directly place that in the substitution. Or else you can try this.
sed -i -e 's/\(1234:\)[^"]*/\1'$1'/' temp.txt
If your system not allow to use the -i option, you can use the redirect like this.
sed -e 's/\(1234:\)[^"]*/\1'$1'/' temp.txt > temp.txt