for z in *.txt; do zip "${z%".txt"}.zip" "$z"; done

Where “txt” can be replaced by any other extension, so file1.txt will be zipped to file1.zip, file2.txt will be file2.zip etc.

And to unzip all the files you can use the following:

for z in *.zip; do unzip "$z"; done

Easiest way to sort subdirectory sizes:

du -h -d 1 |sort -k1 -rh

Where du -h -d 1 is used to show human readable format (-h) and only 1st level of subdirectory (-d 1).

I tried recently to update WordPress to release 6.3 but it was constantly failing in my setup with nginx/php-fpm7.4.

Easiest way to fix it is to find this part of your site config in nginx:

        location ~ \.php(?:$|/) {
                include snippets/fastcgi-php.conf;
                fastcgi_pass php;
        }

and append it with fastcgi timeout settings:

        location ~ \.php(?:$|/) {
                include snippets/fastcgi-php.conf;
                fastcgi_read_timeout 600;
                fastcgi_send_timeout 600;
                fastcgi_connect_timeout 600;
                fastcgi_pass php;
        }