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how_to
43
how_to
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@ -353,6 +353,9 @@ Network Manager:
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Chrony integration:
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trizen -S https://aur.archlinux.org/networkmanager-dispatcher-chrony.git/
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Display wifi password for current SSID:
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nmcli device wifi show-password
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Power saving :
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echo "vm.dirty_writeback_centisecs = 6000" >> /etc/sysctl.d/dirty.conf
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echo "vm.laptop_mode = 5" >> /etc/sysctl.d/laptop.conf
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@ -369,6 +372,12 @@ Use scanner from command line
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Example to scan US letter in good quality
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scanimage --device "plop" --resolution 300 --format jpeg -y 280 --mode Color > whatevs.jpg
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Setup printer
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HP:
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Use hplip's interactive CLI to configure CUPS (USB/Network):
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hp-setup -i
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Remote presentation tool:
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ssh <slides-machine>
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while read -r; do DISPLAY=:0 xdotool getactivewindow key space; done
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@ -863,6 +872,25 @@ Android:
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# https://toot.party/@SigmaOne/106159205703917847
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Custom NotoColorEmoji.ttf in /system/fonts/
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Make SIP call from the default phone app:
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# https://shkspr.mobi/blog/2020/07/adding-sip-calls-to-android-for-free/
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Phone > Settings > Call Settings > SIP accounts
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Rip an ebook (or any paginated document) from android (quick and dirty):
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# By Terence Eden
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# https://shkspr.mobi/blog/2021/12/quick-and-dirty-way-to-rip-an-ebook-from-android/
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screenshot script:
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#!/bin/bash
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for i in {00001..00555}; do
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adb exec-out screencap -p > $i.png
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adb shell input tap 1000 2000
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sleep 1s
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done
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echo All done
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Use mogrify to crop and trim as needed.
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Use pdfsandwich or ocrmypdf to add OCR info.
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Fix: Failed to activate service 'org.freedesktop.login1': timed out:
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If dbus has been restarted, don't forget to restart elogind/systemd-logind
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@ -920,6 +948,21 @@ ssh:
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from server:
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ssh -p 2222 <user>@127.0.0.1
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Transfer files without using ssh/scp:
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# Credits: @Chapoline, @britaliope
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Server-side (untars in current directory):
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# directory
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nc -l -p 1234 | openssl enc -aes-256-cbc -d -iter 1000 | tar -xzf -
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# file
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nc -l -p 1234 | openssl enc -aes-256-cbc -d -iter 1000 | gunzip - > <file>
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Client-side:
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# directory
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tar -zc <dir> -c | openssl enc -aes-256-cbc -e -iter 1000 | nc <ip> 1234 -q 1
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# file
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gzip <file> -c | openssl enc -aes-256-cbc -e -iter 1000 | nc <ip> 1234 -q 1
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# Both need the same passphrase in stdin
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Run MSVC on linux with Wine:
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As seen on the internet, not tested:
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https://hackernoon.com/a-c-hello-world-and-a-glass-of-wine-oh-my-263434c0b8ad
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