sed plus sign doesn't work

Question

I\'m trying to replace /./ or /././ or /./././ to / only in bash script. I\'ve managed to create regex for sed but it doe

Answer 1

You can also do this with bash's built-in parameter substitution. This doesn't require sed, which doesn't accept -r on a Mac under OS X:

variable="something/./././"
a=${variable/\/*/}/                   # Remove slash and everything after it, then re-apply slash afterwards
echo $a
something/

See here for explanation and other examples.