I am using Raspbian.

The problem arised when I changed my wifi AP's hidden key by inserting the following line in wpa_supplicant.conf


When I try to view the info of wpa_supplicant file or try to edit it with nano, I just see an empty file.

How can this value of hidden key be returned to as it was initially?


Sorry, It was a silly mistake. I wasn't using root/admin privileges. So, using sudo did all the work.

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