External disk drive write performance decreases after some time. What could be the reason?

I have an external USB 3 “spinning rust” 2.5” Harddisk. Serial number lookup at Western Digital reveals this is a model WDBYNN0010BBL, “WD My Passport (Ultra) Portable Storage, Blue”. 1 TB = 931.48 GB, cheap and cheerful. No data sheet. WD instrumentation software provides no way to find out more about the actual harddisk in…

How to restart apache2 server

I’m unable to run sudo service apache2 restart on my sever. Inorder to troubleshoot this when I execute sudo systemctl status apache2.service and I get the following log. Loaded: loaded (/lib/systemd/system/apache2.service; enabled; vendor preset: enabled) Drop-In: /lib/systemd/system/apache2.service.d └─apache2-systemd.conf Active: failed (Result: exit-code) since Sat 2019-12-07 13:04:25 UTC; 7min ago Process: 17357 ExecStart=/usr/sbin/apachectl start (code=exited, status=1/FAILURE)…