Ubuntu Software Update Application Always Fails GNOME Application Platform version 3.34 on Ubuntu 18.04

ID Arch Branch Op Remote Download 1. org.gnome.Platform x86_64 3.34 u flathub < 318.4 MB 2. org.gnome.Platform.Locale x86_64 3.34 u flathub < 322.7 MB (partial) 3. org.freedesktop.Platform.openh264 x86_64 19.08 i flathub < 593.4 kB So I should not install these into Ubuntu 18.04. correct? This shows in terminal. like this -> $ flatpak update also…

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Can we measure bitcoin’s accumulated work in terms of entropy (in bits) directly rather than expected number of hashes?

The Background Bitcoin tracks chain work by counting the (expected) minimum number of hashes it would take to create a chain of the same number of blocks and same difficulty steps[1]. Naturally, accumulated work measured in this fashion (e.g. expected number of hashes) increases with each new block that is added to the chain. For…

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Wait for onDataChange in Firebase

I have a model that contains fields 1- name , 2- price, One firebase function gets the list of items (with both the fields) Then i have a button that adds the data to firebase. first name is added then price is added public void addItemForStore(String itemName, String itemPrice) { DatabaseReference ref = database.getReference().child(“items”).push(); ref.child(“name”).setValue(itemName);…

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Are there any shell utilities on modern Unix-like operating systems that cannot operate on text files with super long lines?

One can obtain the value of of LINE_MAX by running getconf LINE_MAX. On FreeBSD 12 and Ubuntu 18.04 (and I suspect many others) this value is 2048 bytes. In POSIX world, there are many shell utilties that are specifically designed to work with text files. A file that has any one line that exceeds LINE_MAX…

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Will a NVMePCIe gen3 x4 (physical x16) Adapter use x8 of PCIe gen2?

I’ve found a couple of x16 nvme adapters like those: https://www.amazon.de/dp/B07VV9DYTL/ref=sr_1_2_sspa https://www.amazon.de/dp/B07RWCGP1S/ref=sr_1_8 So as a follow up to my earlier question PCIe gen3 x4 card in PCIe gen2 x8 slot – full performance possible?: If a gen3 card that has physical x16 but only uses x4 (gen3) is put into a gen2 slot, would it…

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In CentOS 7, is there a way to specify which block devices should be tuned with the scheduler (or ELEVATOR)?

In CentOS 6, there was /etc/tune-profiles/my-server/ktune.sysconfig with this text(I’m referring to the comments that explain what the code is doing): # This is the I/O scheduler ktune will use. This will *not* override anything # explicitly set on the kernel command line, nor will it change the scheduler # for any block device that is…

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