Και λογαριασμό στο mas.to έχω (να μην το κρύψωμεν άλλωστε!)

 

 

 https://mas.to/web/accounts/139295

 

How Install Viber Messenger App on Ubuntu 20.04 LTS

https://vitux.com/how-to-install-viber-messenger-app-on-ubuntu-20-04-lts/

μια εντολή αρκεί

$ sudo snap install viber-unofficial

 

boot menu on toshiba satellite

 

https://support.dynabook.com/support/viewContentDetail?soid=403623 

Information

Many Toshiba PCs can boot (start Windows, or another operating system) from devices other than the built-in hard disk (HDD) or built-in diskette drive (FDD). These devices include USB diskette drives, CD-ROM discs, a local area network (LAN), and PC Card (PCMCIA) hard disk drives.

Toshiba PCs that offer alternate boot devices allow you to specify which device to boot from (the 'boot priority') by three methods:

• From BIOS Setup (semi-permanent setting)
  
  Boot priority specifies the order in which the computer searches for a bootable operating system. For example, if you set your system to boot from devices in this order: CD-ROM > HDD > LAN, the computer first checks for a bootable CD, then for a bootable HDD, then for a bootable LAN, and loads the operating system from the first one it finds.
  
  Different models offer different options for setting boot priority. For information about how to access the BIOS/CMOS settings on your Toshiba PC, please see the Support Bulletin entitled "How to access the BIOS Settings on your Toshiba Portable PC" that is applicable to your model. By setting the boot priority in this manner, the boot selected priority setting will be retained for all future restarts, until it is changed again.
  
  
• From the Boot Device Menu (temporary setting)
  
  

  When the TOSHIBA splash screen is displayed when you first turn on your computer, a boot menu prompt may be displayed for a few seconds near the bottom of the screen, indicating that a key (F2 or F12, for example) can be pressed to display a menu of boot options. The time allowed for detecting the keypress is very brief, so you'll need to be both prepared and quick.
  
  On some models this prompt reads Press F12 for boot menu. On others, it may say Press C to boot from CD-ROM. On still others, there may be a row of colored icons representing the various boot devices (HDD, FDD, CD, LAN, PCMCIA, etc.) Press F12 while these icons are displayed, and then use the arrow keys to move the cursor from one to another. As new models are released, the wording of these prompts may change.
  
  On models that offer a text boot device menu, simply press the key corresponding to the desired boot device from the list of available devices.

  The selection of a boot device from any of these boot device menus affects only the current startup operation; the next time the computer is started it will follow the boot priority setting established in BIOS Setup (see the BIOS Setup method, above).
  
  

• From the Boot Device Hotkeys (temporary setting)
  
  Immediately after pressing the power-on button, press the hotkey for the device from which you wish to boot:
  
  

  Hotkey	Boots from device
  C	IDE CD-ROM1
  F	ISA FDD2
  U	USB FDD3
  N	internal LAN adapter4

  The computer will boot from the selected device if it finds a bootable operating system, otherwise it will search for a bootable device, following the boot priority set in BIOS Setup.

  1. "IDE CD-ROM" refers to the computer's internal CD-ROM drive (built-in, SelectBay, or built-in to a Toshiba docking device).
     
     
  2. "ISA FDD" refers to an internal or SelectBay diskette drive, or an external diskette drive that connects to the PC through a special Toshiba-proprietary connector.
     
     
  3. Not all models support booting from a USB-connected diskette drive.
     
     
  4. Not all models support the hotkey for the internal LAN adapter, even though they may support booting from LAN.

The selection of a boot device from Boot Device Hotkeys affects only the current startup operation; the next time the computer is started it will follow the boot priority setting established in BIOS Setup (see the BIOS Setup method, above).

Notes:

• Booting from a CD in a CD-ROM drive requires that the CD be made bootable when it is created ('burned'). Simply copying files to a CD does not make it bootable.
  
  
• If a "PXE..." error is displayed when you start the computer, it indicates that the computer is attempting to boot from a network (LAN), but is not able to find a remote boot server. If this happens repeatedly, and you are not deliberately trying to boot from a network server, change the boot priority in BIOS Setup to make 'LAN' the last entry in the list of boot devices.

^{- cc/wa}

Export Control and EULA

Use of any software made available for download from this system constitutes your acceptance of the Export Control Terms and the terms in the Toshiba end-user license agreement both of which you can view before downloading any such software. 

 

how delete SIGNAL messages you no longer need automatically

trim according to the number of messages in each conversations in

Settings > Storage > Message trimming settings

I founded the tip in the

https://community.signalusers.org/

χρόνος εκκίνησης Ubuntu LTS

μεταχειρισμένο lenovo thinkpad  intel i5 memory 8gb και ssd

18.04

$ systemd-analyze

Startup finished in 4.174s (kernel) + 8.094s (userspace) = 12.268s graphical.target reached after 8.086s in userspace

20.04

$ systemd-analyze
Startup finished in 2.659s (kernel) + 11.241s (userspace) = 13.901s
graphical.target reached after 11.220s in userspace

αναβάθμιση σε Ubuntu 20.04 gnome

είχα φτιάξει ήδη στικάκι

με το Startup Disk Creator,

o φορητός με ρυθμισμένο bios να εκκινεί από το usb,

οπότε

η εγκατάσταση

(με σβήσιμο όλου του δίσκου αφού είχα κάνει από πριν backup)

μου πήρε λιγότερο από 15 λεπτά

μαζί με την προσθήκη ελληνικού πληκτρολογίου και λοιπές ρυθμίσεις,

ο φυλλομετρητής firefox συγχρονισμένος, οπότε δε χρειάζεται να κάνω τίποτε

για τα bookmarks

κι έτσι το σύστημα στο μεταχειρισμένο μου φορητό

... ολοκαίνουριο!

Snaps commands

https://www.tecmint.com/install-snap-in-linux/

how to make a bootable usb on Xubuntu

for

1. use "Startup Disk Creator".

sudo apt-get update

sudo apt-get install usb-creator-gtk

after installing it, you can find it in the settings

caffeinate - inhibit desktop idleness

http://manpages.ubuntu.com/manpages/bionic/man1/caffeinate.1.html

έμαθα για την εφαρμογή από ανάρτηση για εντολές σε τερματικό Mac

https://medium.com/better-programming/impress-your-friends-with-these-fun-and-useful-mac-terminal-commands-c091ec2a0024

αλλά είναι ίδιες (ή σχεδόν ίδιες) και σε συστήματα GNU Linux

μόλις ενεργοποιήσεις την εφαρμογή το εικονίδιο τη κούπας καφέ... αχνίζει

χα χα!

test your internet download speed from terminal

απίστευτα εύκολα μέσω του

για Debian, Ubuntu κλπ.

sudo snap install fast

μία εντολή στο τερματικό

fast

για άλλες διανομές GNU Linux, δείτε

https://snapcraft.io/fast

Signal on Xubuntu 20.04

only one command in the terminal

sudo snap install signal-desktop

αναβάθμιση από fedora 31 σε fedora 32

GNULinux Fedora 32 Xfce

με τις παρακάτω εντολές:

sudo dnf upgrade --refresh
sudo dnf install dnf-plugin-system-upgrade
sudo dnf system-upgrade download --releasever=32
το κατέβασμα των 1879 πακέτων λογισμικού μου πήρε 40 λεπτά
με την ταχύτητα να κυμαίνεται από 455kB/s μέχρι 1,7MB/s  
sudo dnf system-upgrade reboot
η εγκατάσταση μου πήρε ακριβώς 1 ώρα και 50 λεπτά

ταχύτητα εκκίνησης fedora 31 xfce σε φορητό 12 ετών!

$ systemd-analyze
Startup finished in 2.939s (kernel) + 9.311s (initrd) + 53.207s (userspace) = 1min 5.458s
graphical.target reached after 48.634s in userspace

uname -a
Linux localhost.localdomain 5.6.8-200.fc31.x86_64 #1 SMP Wed Apr 29 19:10:01 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux

$ uname -srm
Linux 5.6.8-200.fc31.x86_64 x86_64

$ lspci -v

00:01.2 RAM memory: NVIDIA Corporation MCP67 Memory Controller (rev a2)
    Subsystem: Hewlett-Packard Company Device 30cf
    Flags: 66MHz, fast devsel, NUMA node 0

00:01.3 Co-processor: NVIDIA Corporation MCP67 Co-processor (rev a2)
    Subsystem: Hewlett-Packard Company Device 30cf
    Flags: bus master, 66MHz, fast devsel, latency 0, IRQ 11, NUMA node 0
    Memory at f6200000 (32-bit, non-prefetchable) [size=512K]

$ lscpu
Architecture:                    x86_64
Model name:                      AMD Turion(tm) 64 X2 Mobile Technology TL-60

memory while using:

firefox and

the terminal

free
              total        used        free      shared  buff/cache   available
Mem:        2989752     1791272      303920       79668      894560      962172
Swap:       3129340       27916     3101424

just installed 32bit openSUSE tumbleweed on my old turbox laptop

emmanuel@localhost:~> inxi -F
System:
  Host: localhost Kernel: 5.6.11-1-pae i686 bits: 32
  Desktop: Xfce 4.14.2
  Distro: openSUSE Tumbleweed 20200508

CPU:
  Topology: Dual Core model: Intel T1400 bits: 64
  type: MCP L2 cache: 512 KiB
  Speed: 1733 MHz min/max: N/A Core speeds (MHz): 1: 1733
  2: 1733

emmanuel@localhost:~> uname -m
i686

I downloaded the iso

and made a live usb using fedora usb maker

the live usb is surprisingly fast (if you don;t want to install the os)

google lens accuracy

just tried google lens  on my andrpid xiaomi cellphone to

copy and paste handwritten notes in a google doc

the greek script doesn't work well,

but the text i wrote in english was transcribed perfectly

i'd written all the text clearly,  in capitals

this is how its was copied in a google doc:

AOKIMH GOOGLE LENS DA METAT POTTA XEIPOTEPA Y

E

KEIM ENO LET'S ALSO TRY IT IN ENGLISH TO SEE WHICH SCRIPT

WORKS BETTER MAY 8th, 2020

Ubuntu 20.04 LTS (Focal Fossa) released

Ubuntu Linux 20.04 LTS 'Focal Fossa'


Date: Thu, 23 Apr 2020 18:47:04 +0100
From: Iain Lane <laney@ubuntu.com>
To: ubuntu-announce@lists.ubuntu.com
Cc: ubuntu-release@lists.ubuntu.com
Subject: Ubuntu 20.04 LTS (Focal Fossa) released
Message-ID: <20200423174704.GA648173@nightingale.orangesquash.org.uk>
Content-Type: text/plain; charset="utf-8"

The Ubuntu team is very pleased to announce our eighth long-term support
release, Ubuntu 20.04 LTS for Desktop, Server, Cloud and Core.

Codenamed "Focal Fossa", 20.04 LTS continues Ubuntu's proud tradition
of integrating the latest and greatest open source technologies into a
high-quality, easy-to-use Linux distribution. The team has been hard at
work through this cycle, introducing new features and fixing bugs.

The Ubuntu kernel has been updated to the 5.4 based Linux kernel,
with additional support for Wireguard VPN, AUFS5, and improved support
for IBM, Intel, Raspberry Pi and AMD hardware.

Ubuntu Desktop 20.04 LTS features the latest version of the GNOME
desktop environment, 3.36. Notable changes from 18.04 LTS include
performance improvements, a new lock screen design, and support for
fractional scaling under X11. 20.04 LTS also features a new
look-and-feel: the “Yaru” theme, available in both light and dark
variants.

20.04 LTS also brings support for installing an Ubuntu desktop system on
top of ZFS. The latest version brings performance enhancements and
optional encryption support. Zsys, Ubuntu’s ZFS system tool, provides
automated system and user state saving. Tight integration with GRUB
allows a user to revert to any system state on boot and go back in time
to pave the way to a bulletproof Ubuntu Desktop.

Ubuntu 20.04 LTS includes Python 3.8 as the default version but Python
2.7 is still available in the Ubuntu archive.

Ubuntu Server brings major updates to industry-standard packages
available on private clouds, public clouds, containers or bare metal in
your datacentre. Included are an updated HA/Clustering stack, PHP 7.4,
Ruby 2.7, Postgres 12, MySQL 8 and updated OpenSSH with U2F support for
security.

The newest Ubuntu Budgie, Kubuntu, Lubuntu, Ubuntu Kylin, Ubuntu MATE,
Ubuntu Studio and Xubuntu are also being released today.

More details can be found for these at their individual release notes:

    https://wiki.ubuntu.com/FocalFossa/ReleaseNotes#Official_flavours

Maintenance updates will be provided for 5 years for Ubuntu Desktop,
Ubuntu Server, Ubuntu Cloud and Ubuntu Core. All the remaining flavours
will be supported for 3 years. Additional security support is available
with ESM (Extended Security Maintenance).


To get Ubuntu 20.04 LTS
-----------------------

In order to download Ubuntu 20.04 LTS, visit:

   https://ubuntu.com/download

Users of Ubuntu 19.10 will be offered an automatic upgrade to 20.04 LTS
via Update Manager shortly. Users of 18.04 LTS will be offered the
automatic upgrade when 20.04.1 LTS is released, which is scheduled for
July 23rd. For further information about upgrading, see:

   https://ubuntu.com/download/desktop/upgrade

As always, upgrades to the latest version of Ubuntu are entirely free
of charge.

We recommend that all users read the release notes, which document
caveats, workarounds for known issues, as well as more in-depth notes
on the release itself. They are available at:

   https://wiki.ubuntu.com/FocalFossa/ReleaseNotes

Find out what's new in this release with a graphical overview:

   https://ubuntu.com/desktop
   https://ubuntu.com/desktop/features

If you have a question, or if you think you may have found a bug but
aren't sure, you can try asking in any of the following places:

   #ubuntu on irc.freenode.net
   https://lists.ubuntu.com/mailman/listinfo/ubuntu-users
   https://ubuntuforums.org
   https://askubuntu.com


Help Shape Ubuntu
-----------------

If you would like to help shape Ubuntu, take a look at the list of ways
you can participate at:

   https://discourse.ubuntu.com/contribute


About Ubuntu
------------

Ubuntu is a full-featured Linux distribution for desktops, laptops, clouds
and servers, with a fast and easy installation and regular releases. A
tightly-integrated selection of excellent applications is included, and an
incredible variety of add-on software is just a few clicks away.

Professional services including support are available from Canonical and
hundreds of other companies around the world. For more information about
support, visit:

   https://ubuntu.com/support


More Information
----------------

You can learn more about Ubuntu and about this release on our website
listed below:

   https://ubuntu.com

To sign up for future Ubuntu announcements, please subscribe to Ubuntu's
very low volume announcement list at:

   https://lists.ubuntu.com/mailman/listinfo/ubuntu-announce


On behalf of the Ubuntu Release Team,

--
Iain Lane                                  [ iain@orangesquash.org.uk ]
Debian Developer                                   [ laney@debian.org ]
Ubuntu Developer                                   [ laney@ubuntu.com ]
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