This is a sed command to replace the word false with true in the updates.xml document.
sed -i "" 's/false/true/' /Users/work/Desktop/updates.xml
Here is a breakdown of the above command.
The -i will edit the file in place.
The "" will get around not having an extension after the -i as required by os x.
You could also use sed -i.bak which would create a backup of the file before it’s edited instead of the "".
The remainder of the command: replace “false” with “true” in the file updates.xml.
You could add a “g” to the command to replace all instances of false with true in the updates.xml document with the command below.
sed -i "" 's/false/true/g’ /Users/work/Desktop/updates.xml