Why are all the files in this folder locked in Ubuntu?

Question

I have also forgotten what operations I have done in the past few days. I only have files in apache2. Every time I modify a file and save it, I have to enter a password. How should I get it back if I don’t want to lock it?

Answer 1

The user does not have operating permissions on the current file (folder) and needs super user permissions, so he needs to enter a password every time.
Open terminal, cd to the current directory, and execute the command (you need to enter the password)

sudo chmod 777 ./*

Answer 2

For security reasons, use the sudo command to temporarily gain access permissions