This is useful if I want to edit a script but I'm not in my scripts
directory. It will look for a file with the name I have typed and
replace it.
for example:
vim yt<^n>
will be replaced with
vim /home/jonathan/.bin/yt
The script will first try `which <filename>`, searching the path. If
that fails, it will do `locate "*/filename"` which will search for the
file elsewhere
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