chmod

I wanted to see what GDevelop 5 is - I downloaded a file from the official website. the site. I executed the command chmod a+ ... n error is returned bash: ./GDevelop-5-5.0.0-beta97.AppImage: cannot execute binary file: Exec format error What should I do?

On the locale, apache2 is raised, for sites/tests I use the directory /home/www/ The following directories with 777 permissi ... ig Why is the newly created file new.php assigned rights to 644? How do I fix this ? Ps: tired of typing chmod -R 777 ./*

In ubuntu 14, 4 executed chmod 777 /, after which su and sudo -s stopped executing. How do I fix this? $ su operation not ... rmitted $ sudo -s /etc/sudoers is world writable no valid sudoers souces found, quitting unable to initialize policy plugin