Given:
I have Firefox with the [Firefox Page Title] page open on my Ubuntu computer.
Here is my command:
After trying several different approaches to get xdotool to work correctly, I'm inclined to believe that xdotool itself is the issue. Here is what I tried, none worked.
I also tried these commands in a script, as the frontpage for xdotool recommends, although it states this is the "older" version, as it is separated into multiple commands. The "new" version was the version I was trying to execute before and is a single command (see question).
WID=`xdotool search "Firefox Page Title"`
xdotool windowactivate --sync $WID
xdotool key --clearmodifiers ctrl+r
All of the above attempts ALWAYS correctly focused to the window I wanted, but it does not send the key whether it was F5 or ctrl+r.
However, the following worked correctly:
xdotool selectwindow key ctrl+r
OR
xdotool selectwindow key F5
The selectwindow command, when executed, turns your cursor into a rectangular selection tool at which point you can select the window you want to be focused and, in this case, what window to send either the ctrl+r or F5 key to. Unfortunately, this is not what I was looking for, as it requires user input to work correctly.
Final Solution:
My solution (since I was attempting to use xdotool to constantly refresh a web-page) was to use the ReloadEvery Firefox add-on, which refreshes any page you set it on in any time interval you choose. It is intended to be a replica of the Opera browser's built-in automatic page refresh feature, and thus far, it works well.
For those of you who use Chrome and are looking for a similar solution, there are plenty of add-ons available for you too. https://chrome.google.com/webstore/search/auto%20refresh