WordPress plugins not visible fix

Just putting this out there to be found by anyone who tries to google this issue, I had some trouble with this and couldn’t find this solution.
My plugin wasn’t visible by wordpress but all the other plugins were. After a reinstallation of wordpress (didn’t help) and some other poking around, I found out that the permissions of the folder wasn’t open enough for the webserver to read and execu. te.
The permissions of your folder should be at least open enough to be visible by your webserver(my webserver runs under the user www-data and for testing my wordpress folder lives in my home directory which belongs to another user).

Anyway, type this in the commandline(either locally or remotely):
$ chmod 755 <directory/of/your/plugin>

result: drwxr-xr-x
This did the trick for this specific problem, type $ ls -alF, in the commandline to find out if your permissions are set correctly.

Richard