What is the difference in a bash script when one places something between
single quotes:
- using the apostrophe, '
- using the accent grave, `
?
Eg.,
ps -fu 'whoami'
ps -fu `whoami`
They produce entirely different results.
There are many other places where one might wish to put a command, variable,
etc., into single quotes, so, which type of single quote sahould be used and
what is the diffence between the two?