Question

If I wanted to search for a line in a file and append a string to the end of that line, how can I go about it? I.E.:

file=?

I want to search for file=? and replace the question mark with a file path. The file path is located in a variable $FILEPATH

file=$FILEPATH

Thanks!

EDIT

sed -i -f "s,file=\?,file=$FILEPATH,g"

The above works well and is what I’m looking for but is there a way to replace the question mark? With the code above if I have the following:

FILEPATH=/file/path

Properties file:

something=?
file=?

The replacement produces:

Properties file:

something=?
file=/file/path?

Is there a way to replace the ? completely?

Answer 1

I’d use sed for that:

sed -i "s/file=?/file=$FILEPATH/g" your_file

If your $FILEPATH has / then use a different sed separator, something like:

sed -i "s,file=?,file=$FILEPATH,g"