Shell Programming and Scripting

I want to replace only the exact match of string inside the file with another value during the run time.

So,
I have a file filename.txt
where contents are:

Code:

version="1.0.7", 
url="https://google.com/_api/version=GBMaster"

now in my script
I have variable and tried to replace the value of that variable in version line with double quotes and comma.

Code:

new_version="1.0.7.1234567"
sed -i -e "s/version=.*/version="""$new_version""",/g"  filename.txt

the above kind of working, but it also replace the version in url and also not adding (double quotes) like below

Code:

version=1.0.7.1234567, 
url="https://google.com/_api/version=1.0.7.1234567"

I tried a lot variety of seds to make sure my file should only replace version= in version line not in URL.
that includes \< \> or ^. None of them are working.

I would like my o/p to be like below after sed

Code:

version="1.0.7.1234567", 
url="https://google.com/_api/version=GBMaster"

--- Post updated at 08:09 AM ---

never mind, guys fixed it.

Please share with us your final working code.

Thanks.

The fixes are ^version to require the beginning of the line, and \" for a " within " ".
Short solutions:

Code:

sed "s/^\(version=\).*/\1\"$new_version\",/"  filename.txt

Code:

sed "/^version=/ s/=.*/=\"$new_version\",/"  filename.txt

it was with quotes, that's why was not showing it properly.
below one is the working one:
unless you have something else in mind.

Code:

sed -i -e "s/version=\"[[:digit:].]*/version=\"$new_version/g"