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…

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DELL G7 15 Duel boot Ubuntu 18 and Window 10

I have a DELL G7 15, and I want to duel boot Ubuntu 18.04 and Window 10. I have carefully followed this community guide, https://www.dell.com/support/article/us/en/19/sln301754/how-to-install-ubuntu-and-windows-8-or-10-as-a-dual-boot-on-your-dell-pc?lang=en However, when I modified all settings, restart and run ubuntu without installing, I encountered this error…… Not sure if anybody can help me with this issue please… enter image description…

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can’t make wired connection while trying to install

I’m trying to install ubuntu 18.04 on an intel NUC8i3BEH. While running ubuntu from the USB stick it’s unable to make a wired connection. I tried changing the line in /etc/NetworkManager/NetworkManager.conf managed=false to managed=true (as suggested in some posts) but it didn’t work. My /etc/netplan/01-network-manager-all.yaml already contains the line: renderer: NetworkManager (also as suggested to…

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Recall nth word from previous command that used brace expansion

I frequently find myself copying an existing file before editing it. I’m quite lazy, so of course I make use of brace expansion: $ cp some/long/path/to/file{a,b}.txt $ vi some/long/path/to/fileb.txt I’m wondering if there’s a way to save even more tedious typing by referring to the expanded “fileb” path somehow. Bash’s event/word designators don’t seem to…

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