Firmware flashing

how_to

@@ -31,6 +31,8 @@ Usefull packages :
         lnav
     Backlight management:
         light               # http://haikarainen.github.io/light/
+    IRC:
+        catgirl             # https://git.causal.agency/catgirl
 
 System setup:
     display/drivers:
@@ -106,9 +108,8 @@ keyboard :
 Nice environment :
     cd ~
     git clone http://gitlab.rezometz.org/lhark/rc.git
-    [git -C rc checkout v2]
     rc/install.sh
-    chsh -s </bin/zsh|/usr/bin/fish>
+    chsh -s /bin/zsh
 
 pacman :
     -Syu        Upgrade system
@@ -117,7 +118,9 @@ pacman :
     -Sc         Clean packages cache
     -Rns <>     Remove program, its unused dependencies, and config files
     -Qi <>      Package information
-    -Fo <file>  Which package the file belongs to
+    -Ql <>      List files owned by package
+    -Qo <file>  Which package the file belongs to
+    -Qs <>      Search install packages
     Recover installed packages from /var/log/pacman.log
         (awk '$3 ~ /installed/{print $4}' /var/log/pacman.log | sort | uniq; sed -En 's@.*/home/lhark/aur/(.*)/.*@\1@p' /var/log/pacman.log) | sort | uniq -u > package-list
 
@@ -231,6 +234,9 @@ PDF :
         convert [jpg|png|txt|pdf|...] output.pdf
         # Might need to tweak /etc/ImageMagick-7/policy.xml
         # https://stackoverflow.com/questions/52998331/imagemagick-security-policy-pdf-blocking-conversion
+    Create pdf from images losslessly:
+        pacman -S img2pdf
+        img2pdf -o <out.pdf> <in1.jpg..inN.jpg>
     Fill form & annotate:
         For well formatted interactive forms:
             evince
@@ -242,6 +248,7 @@ PDF :
             inkscape
         Batch mode with pdftk:
             # http://www.myown1.com/linux/pdf_formfill.shtml
+            # https://blog.nemirwen.me/posts/batch-pdf-form-filling
             Finding the fields:
                 # pdftk needs java-commons-lang
                 pdftk form.pdf dump_data_fields_utf8 > fields.flds
@@ -254,32 +261,32 @@ PDF :
             Filling the form:
                 pdftk form.pdf fill_form fields.fdf output filled_form.pdf
 
-Generate a PDF quickly from Markdown:
-    # tectonic is pretty nice as a "it just works" latex compiler
-    pandoc --pdf-engine=tectonic in.md -o out.pdf
+    Generate a PDF quickly from Markdown:
+        # tectonic is pretty nice as a "it just works" latex compiler
+        pandoc --pdf-engine=tectonic in.md -o out.pdf
 
-Fill dynamic XFA forms on linux:
-    Run Acrobat Reader DC 2019 on wine:
-        https://linuxconfig.org/how-to-install-latest-adobe-acrobat-reader-dc-on-ubuntu-18-04-bionic-beaver-linux-with-wine
-        https://www.quora.com/How-do-I-install-Adobe-Reader-on-Ubuntu-using-the-Wine-software
-        ftp://ftp.adobe.com/pub/adobe/reader/win/AcrobatDC/
-        WINEARCH=win32
-        WINEPREFIX=~/.wine-32
-        winetricks mspatcha
-        winetricks riched20
-        winetricks allfonts  # Maybe not ?
-        trizen -S ttf-windows  # Indispensable, without it no text in UI
-        # maybe? winetricks atmlib wsh57
-        winetricks settings win7
-        wget ftp://ftp.adobe.com/pub/adobe/reader/win/AcrobatDC/1901220034/AcroRdrDC1901220034_en_US.exe  # Replace by latest version
-        wine ./AcroRdrDC1901220034_en_US.exe
-        wine ~/.wine-32/drive_c/Program\ Files/Adobe/Acrobat\ Reader\ DC/Reader/AcroRd32.exe
-        Select "Always open with Protected Mode Disabled"
-        Don't forget to kill the wineserver, adobe leaves a lot of garbage running:
-            wineserver --kill
-    Master PDF Editor (free version):
-        https://code-industry.net/free-pdf-editor/
-        trizen -S masterpdfeditor
+    Fill dynamic XFA forms on linux:
+        Run Acrobat Reader DC 2019 on wine:
+            https://linuxconfig.org/how-to-install-latest-adobe-acrobat-reader-dc-on-ubuntu-18-04-bionic-beaver-linux-with-wine
+            https://www.quora.com/How-do-I-install-Adobe-Reader-on-Ubuntu-using-the-Wine-software
+            ftp://ftp.adobe.com/pub/adobe/reader/win/AcrobatDC/
+            WINEARCH=win32
+            WINEPREFIX=~/.wine-32
+            winetricks mspatcha
+            winetricks riched20
+            winetricks allfonts  # Maybe not ?
+            trizen -S ttf-windows  # Indispensable, without it no text in UI
+            # maybe? winetricks atmlib wsh57
+            winetricks settings win7
+            wget ftp://ftp.adobe.com/pub/adobe/reader/win/AcrobatDC/1901220034/AcroRdrDC1901220034_en_US.exe  # Replace by latest version
+            wine ./AcroRdrDC1901220034_en_US.exe
+            wine ~/.wine-32/drive_c/Program\ Files/Adobe/Acrobat\ Reader\ DC/Reader/AcroRd32.exe
+            Select "Always open with Protected Mode Disabled"
+            Don't forget to kill the wineserver, adobe leaves a lot of garbage running:
+                wineserver --kill
+        Master PDF Editor (free version):
+            https://code-industry.net/free-pdf-editor/
+            trizen -S masterpdfeditor
 
 D-Bus :
     To reload service files /usr/share/dbus-1/services/
@@ -306,6 +313,8 @@ Wallpapers :
             center selection
             etc.
 
+        Or use https://github.com/aearil/dustr in a loop
+
 
 Drag & drop files:
     dragon : https://github.com/mwh/dragon
@@ -341,6 +350,9 @@ Network Manager:
         Under IPv4:
             select Shared
 
+    Chrony integration:
+        trizen -S https://aur.archlinux.org/networkmanager-dispatcher-chrony.git/
+
 Power saving :
     echo "vm.dirty_writeback_centisecs = 6000" >> /etc/sysctl.d/dirty.conf
     echo "vm.laptop_mode = 5" >> /etc/sysctl.d/laptop.conf
@@ -459,19 +471,18 @@ Borg backup:
 
 Serial terminal
     st -l /dev/ttyUSB0 <baud>
+    # Or
+    minicom -D /dev/ttyUSB0 -b <baud>
 
 Wifi AP:
-    https://wiki.archlinux.org/index.php/Software_access_point
+    # https://wiki.archlinux.org/index.php/Software_access_point
     sudo pacman -S create_ap
-    https://github.com/oblique/create_ap/issues/107
+    # https://github.com/oblique/create_ap/issues/107
     sed -i '/CHANNEL=$WIFI_IFACE_CHANNEL/d' /usr/bin/create_ap
-    Replace is_wifi_connected with:
-        is_wifi_connected() { return 1 }
+    # Replace is_wifi_connected with:
+    #    is_wifi_connected() { return 1 }
     sudo create_ap [-c <channel>] wlp2s0 wlp2s0 <ssid> <pwd>
 
-Sync from phone:
-    adb-sync -R /sdcard/<folder>/ <dest>
-
 fail2ban unban:
     Check if/where IP is banned
         iptables -L -n | less
@@ -485,33 +496,6 @@ fail2ban unban:
         # Remove leading "-A "
         iptables -D <rule>
 
-Backup non rooted phone with adb:
-    adb backup -all -shared -obb -f <file>
-    need adb < 1.0.31
-    sometimes you might need to quote all arguments together
-
-Root Samsung GT-S7275R "Ace 3" :
-    Use heimdall (cross platform equivalent to Samsung's Odin)
-    Install TWRP recovery:
-        Boot phone to download mode (Hold vol-down & home at boot)
-        Connect USB
-        $ heimdall flash --RECOVERY <recovery.img>
-        Keep vol-up & home pressed during reboot to go straight into recovery or img is overwritten by stock ROM
-    Flash CM13:
-        Use TWRP to Wipe system, data, dalvik & cache
-        $ adb push <cm13.zip> /sdcard
-        Use TWRP to flash CM13
-    Setup tips:
-        Activate dev mode by spamming Settings > About > Build
-        Enable USB debugging
-        Settings > Developer Options > Root Access
-    Sources:
-        https://forum.xda-developers.com/ace-3/development/recovery-t-r-p-samsung-galaxy-ace-3-lte-t2989278
-        https://web.archive.org/web/20160321062212/https://davideddu.org/blog/posts/how-to-flash-a-recovery-image-using-heimdall/
-        https://twrp.me/devices/samsunggalaxyace3.html
-        https://forum.xda-developers.com/ace-3/development/gt-s7275r-b-t-cyanogenmod-13-ace-3-lte-t3242054
-        https://forum.xda-developers.com/ace-3/development/gt-s7275r-b-t-cyanogenmod-14-samsung-t3468084
-
 Nginx + uwsgi:
     $ pacman -S nginx (nginx-runit) uwsgi uwsgi-plugin-python
     /etc/
@@ -568,25 +552,39 @@ Nginx + uwsgi:
     runit:
         echo "exec uwsgi --ini /etc/uwsgi/emperor.ini --logto /var/log/uwsgi.log" > /etc/sv/uwsgi/run
 
-Easy LaTeX compilation:
-    $ trizen -S tectonic
-    $ tectonic <file>.tex
-    Should automatically resolve all dependencies
-    Also takes care of biblatex
-    Uses Xetex to compile
+LaTeX:
+    Easy LaTeX compilation:
+        $ trizen -S tectonic
+        $ tectonic <file>.tex
+        Should automatically resolve all dependencies
+        Also takes care of biblatex
+        Uses Xetex to compile
+    Subtle enby non-binary flag in latex:
+        # Thx @Scarlet
+        \newcommand\crule[3][black]{\textcolor{#1}{\rule{#2}{#3}}}
+        \definecolor{nb1}{RGB}{255,244,48}
+        \definecolor{nb2}{RGB}{220,220,220}
+        \definecolor{nb3}{RGB}{156,89,209}
+        \definecolor{nb4}{RGB}{0,0,0}
+        \begin{center}
+        \crule[nb1]{0.5cm}{0.1cm}
+        \crule[nb2]{0.5cm}{0.1cm}
+        \crule[nb3]{0.5cm}{0.1cm}
+        \crule[nb4]{0.5cm}{0.1cm}
+        \end{center}
 
 Rename files from date of creation:
     for f in *;do
         mv "$f" "$(date "+IMG_%Y%m%d_%H%M%S.${f##*.}" -r "$f")"
     done
 
-    Dans le cas d'android, utiliser tar -cf pour garder les timestamps
+    In Android's case, use tar -cf to keep the timestamps
 
-Deduplication de fichiers:
+file deduplication:
     find ./ -type f -exec md5sum '{}' + | tee imgmd5
     cat imgmd5| sort | uniq --check-chars=32 -d | cut --characters=35- | xargs rm
-    # Pour le debug : | xargs feh -.
-    # Voir aussi la commande cmp, plus efficace qu'un calcul de hash dans certains cas
+    # For debugging : | xargs feh -.
+    # See also the `cmp` command, might be more efficient than a hash computation
 
 Install and update YouCompleteMe on Arch:
     sudo pacman -S clang cmake
@@ -627,10 +625,11 @@ Install 64 bits kernel on 32 bits system (and 64 bits hardware) (bad idea)
 
 Compile C for ATmega328p/Arduino:
     sudo xbps-install -S avr-gcc avr-libc avrdude
-    sudo usermod -aG dialout <user> # Or /dev/ttyACM0 group
+    sudo pacman -S avr-libc avrdude
+    sudo usermod -aG dialout <user> # Or /dev/ttyACM0 group (might be uucp)
 
     avr-gcc -g -Os -DF_CPU=16000000UL -mmcu=atmega328p -c -o <name>.o <name>.c
-    avr-gcc  -mmcu=atmega328p <name>.o -o <name>
+    avr-gcc -mmcu=atmega328p <name>.o -o <name>
     avr-objcopy -O ihex -R .eeprom <name> <name>.hex
     avrdude -F -V -c arduino -p ATMEGA328P -P /dev/ttyACM0 -b 115200 -U flash:w:<name>.hex
 
@@ -676,15 +675,15 @@ Get hardware informations:
         dmidecode -t memory
     Others values are <bios|baseboard|chassis>
 
-Music fingerprinting
+Music fingerprinting:
     # https://github.com/beetbox/pyacoustid
     for f in *.mp3;do echo $f; python ~/src/pyacoustid/aidmatch.py $f;done > ident
     awk '/\.mp3/{f = $0;next} f{printf "mv %s \"../%s.mp3\"\n", f, $0; f=0}' ident > rename.sh
 
-Echo to stderr
+Echo to stderr:
     >&2 echo "message"
 
-Reset gpg-agent passphrase cache
+Reset gpg-agent passphrase cache:
     Useful mainly for testing purposes
     echo RELOADAGENT | gpg-connect-agent
 
@@ -703,9 +702,160 @@ Better Bibtex, Zotero:
 Bumblebee runit fix:
     sed -i 's/Driver=$/Driver=nvidia/' /etc/bumblebee/bumblebee.conf
 
-Uncompress android .ab backup files:
-    # https://stackoverflow.com/questions/18533567/how-to-extract-or-unpack-an-ab-file-android-backup-file
-    ( printf "\x1f\x8b\x08\x00\x00\x00\x00\x00" ; tail -c +25 backup.ab ) |  tar xfvz -
+Runit logging:
+    socklog
+        * syslogd replacement
+        * gets messages sent via syslog() (into /dev/log)
+    svlogd
+        * builtin log rotation
+        * needs to be setup for each service (/etc/runit/sv/<service>/log/run)
+            `exec chpst -u log svlogd -tt /var/log/<service>`
+            $ sudo mkdir /var/log/<service>
+            $ sudo chown -R :log /var/log/<service>
+            $ sudo chmod g+w /var/log/<service>
+    runsvdir
+        * sends its stdout to /dev/console
+        * sends its stderr to its own command line (ps aux | grep runsvdir)
+    runsv
+        * if <service>/log exists, redirects service's stdout to logger's stdin
+        * by default, runsv's stderr, stdout (and stdin?) are redirected to /dev/console
+Android:
+    Uncompress android .ab backup files:
+        # https://stackoverflow.com/questions/18533567/how-to-extract-or-unpack-an-ab-file-android-backup-file
+        ( printf "\x1f\x8b\x08\x00\x00\x00\x00\x00" ; tail -c +25 backup.ab ) |  tar xfvz -
+
+    Setup udev for android device with adb:
+        # Solves "adb: error: failed to get feature set: insufficient permissions for device"
+        # https://wiki.archlinux.org/index.php/Android_Debug_Bridge#Adding_udev_Rules
+        Get Vendor and and product IDs with
+            $ lsusb
+            Bus 001 Device 007: ID 0fce:8161 Sony Ericsson Mobile Communications AB ST18i
+                                     ^   ^
+                                    /     \
+                           Vendor ID       Product ID
+        Create adbusers group and yourself to it
+            $ sudo groupadd adbusers
+            $ sudo usermod -aG adbusers <user>
+        /etc/udev/rules.d/51-android.rules:
+            SUBSYSTEM=="usb",ATTR{idVendor}=="<your vendor id>", MODE="0660", GROUP="adbusers"  # Or sdkusers
+            SUBSYSTEM=="usb",ATTR{idVendor}=="<your vendor id>",ATTR{idProduct}=="<your product id>",SYMLINK+="android_adb"
+            SUBSYSTEM=="usb",ATTR{idVendor}=="<your vendor id>",ATTR{idProduct}=="<your product id>",SYMLINK+="android_fastboot"
+        $ sudo udevadm control --reload-rules
+
+    Setup android emulator:
+        trizen -S android-emulator \
+                android-google-apis-x86-system-image-23 \
+                android-sdk-cmdline-tools-latest  # Some tools are borked in the original package
+        source /etc/profile  # Update PATH
+        # avdmanager will complain about permissions at first start but will
+        # happily put AVDs in /root/.android/avd if you let it have it for too long
+        /opt/android-sdk/cmdline-tools/latest/bin/avdmanager create avd \
+                --force \
+                --name <your AVD name> \
+                --package 'system-images;android-23;google_apis;x86'  # Match path in /opt/android-sdk/system-images/
+        # AVD is stored in ~/.android/avd/
+        # Enable using the hardware keyboard, and switch layout to azerty
+        sed -i  -e 's/\(hw.keyboard=\).*/\1yes/' \
+                -e 's/\(hw.keyboard.charmap=\).*/\1azerty/' \
+                ~/.android/avd/<your AVD name>.avd/config.ini
+        # If you have issues running image from different arch, try checking the PATH or
+        # https://www.bram.us/2017/05/12/launching-the-android-emulator-from-the-command-line/
+        emulator -avd <your AVD name> [-camera-back <none|emulated|webcam0|virtualscene>]
+
+        # Other method, never tried: https://acavalin.com/p/android_emu
+
+    Android diagnostic debug phone codes:
+        # https://www.itworld.com/article/2708985/debug-your-phone-with-these-hidden-android-secret-codes.html
+        # https://www.redmondpie.com/hidden-android-secret-codes-for-samsung-htc-motorola-sony-lg-and-other-devices/
+
+        Confirmed working on Samsung Galaxy Ace 3:
+            *#06# – IMEI number
+            *#*#4636#*#* – Phone information, usage statistics and battery
+
+        *#0*# – Enter the service menu on newer phones like Galaxy S III
+        *#*#34971539#*#* – Detailed camera information
+        *#*#273282*255*663282*#*#* – Immediate backup of all media files
+        *#*#197328640#*#* – Enable test mode for service
+        *#*#232339#*#* – Wireless LAN tests
+        *#*#0842#*#* – Backlight/vibration test
+        *#*#2664#*#* – Test the touchscreen
+        *#*#1111#*#* – FTA software version (1234 in the same code will give PDA and firmware version)
+        *#12580*369# – Software and hardware info
+        *#9090# – Diagnostic configuration
+        *#872564# – USB logging control
+        *#9900# – System dump mode
+        *#301279# – HSDPA/HSUPA Control Menu
+        *#7465625# – View phone lock status
+        *#*#7780#*#* – Reset the /data partition to factory state
+        *2767*3855# – Format device to factory state (will delete everything on phone)
+        ##7764726 – Hidden service menu for Motorola Droid
+        *#*#7594#*#* – Enable direct powering down of device once this code is entered
+        *#*#273283*255*663282*#*#* – Make a quick backup of all the media files on your Android device
+        *#*#232338#*#* – Shows Wi-Fi MAC address
+        *#*#1472365#*#* – Perform a quick GPS test
+        *#*#1575#*#* – For a more advanced GPS test
+        *#*#0283#*#* – Perform a packet loopback test
+        *#*#0*#*#* – Run an LCD display test
+        *#*#0289#*#* – Run Audio test
+        *#*#2663#*#* – Show device’s touch-screen version
+        *#*#0588#*#* – Perform a proximity sensor test
+        *#*#3264#*#* – Show RAM version
+        *#*#232331#*#* – Run Bluetooth test
+        *#*#232337#*# – Show device’s Bluetooth address
+        *#*#7262626#*#* – Perform a field test
+        *#*#8255#*#* – Monitor Google Talk service
+        *#*#4986*2650468#*#* – Show Phone, Hardware, PDA, RF Call Date firmware info
+        *#*#1234#*#* – Show PDA and Phone firmware info
+        *#*#2222#*#* – Show FTA Hardware version
+        *#*#44336#*#* – Show Build time and change list number
+        *#*#8351#*#* – Enable voice dialing log mode, dial *#*#8350#*#* to disable it
+        ##778 (+call) – Show EPST menu
+        These codes are specific to HTC devices only:
+        *#*#3424#*#* – Run HTC function test program
+        *#*#4636#*#* – Show HTC info menu
+        ##8626337# – Run VOCODER
+        ##33284# – Perform field test
+        *#*#8255#*#* – Launch Google Talk service monitor
+        ##3424# – Run diagnostic mode
+        ##3282# – Show EPST menu
+        ##786# – Reverse Logistics Support
+
+    Android wpa_supplicant conf file path:
+        /data/misc/wifi/wpa_supplicant.conf
+
+    Sync from phone:
+        adb-sync -R /sdcard/<folder>/ <dest>
+
+    Backup non rooted phone with adb:
+        adb backup -all -shared -obb -f <file>
+        need adb < 1.0.31
+        sometimes you might need to quote all arguments together
+
+    Root Samsung GT-S7275R "Ace 3" :
+        Use heimdall (cross platform equivalent to Samsung's Odin)
+        Install TWRP recovery:
+            Boot phone to download mode (Hold vol-down & home at boot)
+            Connect USB
+            $ heimdall flash --RECOVERY <recovery.img>
+            Keep vol-up & home pressed during reboot to go straight into recovery or img is overwritten by stock ROM
+        Flash CM13:
+            Use TWRP to Wipe system, data, dalvik & cache
+            $ adb push <cm13.zip> /sdcard
+            Use TWRP to flash CM13
+        Setup tips:
+            Activate dev mode by spamming Settings > About > Build
+            Enable USB debugging
+            Settings > Developer Options > Root Access
+        Sources:
+            https://forum.xda-developers.com/ace-3/development/recovery-t-r-p-samsung-galaxy-ace-3-lte-t2989278
+            https://web.archive.org/web/20160321062212/https://davideddu.org/blog/posts/how-to-flash-a-recovery-image-using-heimdall/
+            https://twrp.me/devices/samsunggalaxyace3.html
+            https://forum.xda-developers.com/ace-3/development/gt-s7275r-b-t-cyanogenmod-13-ace-3-lte-t3242054
+            https://forum.xda-developers.com/ace-3/development/gt-s7275r-b-t-cyanogenmod-14-samsung-t3468084
+
+    Update Emojis on old androids:
+        # https://toot.party/@SigmaOne/106159205703917847
+        Custom NotoColorEmoji.ttf in /system/fonts/
 
 Fix: Failed to activate service 'org.freedesktop.login1': timed out:
     If dbus has been restarted, don't forget to restart elogind/systemd-logind
@@ -731,6 +881,8 @@ Euro truck simulator 2:
     Run ETS2Studio under wine
         winetricks dotnet45
         Confirmed to work on a 32 bits prefix, untested on 64
+    To run TruckersMP on linux:
+        https://github.com/truckersmp-cli/truckersmp-cli
 
 ssh:
     get machine fingerprints:
@@ -744,6 +896,23 @@ ssh:
             ssh-keygen -t ed25519 -a 100
         Good ol' RSA, with 4096 bits for good measure
             ssh-keygen -t rsa -b 4096 -o -a 100
+    Restricted access for backups:
+        Create system user with no password, give it a HOME and a group (or use a backup group)
+        Prepend key in .ssh/authorized_keys with
+            command="scp -f /path/to/<file|wildcard>",no-agent-forwarding,no-port-forwarding,no-pty,no-X11-forwarding ssh-rsa AAAAB[...]
+        Setup rssh
+            pacman -S rssh
+            # Access bits order: rsync, rdist, cvs, sftp, scp, svnserve
+            echo "user=<backup user>:<umask>:000010:" >> /etc/rssh.conf
+            sudo chsh -s /usr/bin/rssh <backup user>
+    Fix key auth:
+        chmod 700 ~/.ssh/
+        chmod 600 ~/.ssh/authorized_keys
+    Allow connections from behind a NAT:
+        from NAT-ed machine:
+            ssh -R 2222:localhost:22 <user>@<server>
+        from server:
+            ssh -p 2222 <user>@127.0.0.1
 
 Run MSVC on linux with Wine:
     As seen on the internet, not tested:
@@ -780,24 +949,6 @@ Image/photo sorting with feh:
     feh --action1 'mv -v %F "/path/to/target/"%N' \
         --action[2-9] [...] /dir/to/sort
 
-Setup udev for android device with adb:
-    # Solves "adb: error: failed to get feature set: insufficient permissions for device"
-    # https://wiki.archlinux.org/index.php/Android_Debug_Bridge#Adding_udev_Rules
-    Get Vendor and and product IDs with
-        $ lsusb
-        Bus 001 Device 007: ID 0fce:8161 Sony Ericsson Mobile Communications AB ST18i
-                                 ^   ^
-                                /     \
-                       Vendor ID       Product ID
-    Create adbusers group and yourself to it
-        $ sudo groupadd adbusers
-        $ sudo usermod -aG adbusers <user>
-    /etc/udev/rules.d/51-android.rules:
-        SUBSYSTEM=="usb",ATTR{idVendor}=="<your vendor id>", MODE="0660", GROUP="adbusers"  # Or sdkusers
-        SUBSYSTEM=="usb",ATTR{idVendor}=="<your vendor id>",ATTR{idProduct}=="<your product id>",SYMLINK+="android_adb"
-        SUBSYSTEM=="usb",ATTR{idVendor}=="<your vendor id>",ATTR{idProduct}=="<your product id>",SYMLINK+="android_fastboot"
-    $ sudo udevadm control --reload-rules
-
 Get original windows key from linux:
     # From: https://twitter.com/BrandonPrry/status/1038269038881898498
     # Not guaranted to work
@@ -819,62 +970,6 @@ MSI ge62 webcam not found:
 Air Canada PNR access:
     https://services.aircanada.com/ServicingPNR/Ancillary/ACO/
 
-Android diagnostic debug phone codes:
-    # https://www.itworld.com/article/2708985/debug-your-phone-with-these-hidden-android-secret-codes.html
-    # https://www.redmondpie.com/hidden-android-secret-codes-for-samsung-htc-motorola-sony-lg-and-other-devices/
-    *#06# – IMEI number
-    *#0*# – Enter the service menu on newer phones like Galaxy S III
-    *#*#4636#*#* – Phone information, usage statistics and battery
-    *#*#34971539#*#* – Detailed camera information
-    *#*#273282*255*663282*#*#* – Immediate backup of all media files
-    *#*#197328640#*#* – Enable test mode for service
-    *#*#232339#*#* – Wireless LAN tests
-    *#*#0842#*#* – Backlight/vibration test
-    *#*#2664#*#* – Test the touchscreen
-    *#*#1111#*#* – FTA software version (1234 in the same code will give PDA and firmware version)
-    *#12580*369# – Software and hardware info
-    *#9090# – Diagnostic configuration
-    *#872564# – USB logging control
-    *#9900# – System dump mode
-    *#301279# – HSDPA/HSUPA Control Menu
-    *#7465625# – View phone lock status
-    *#*#7780#*#* – Reset the /data partition to factory state
-    *2767*3855# – Format device to factory state (will delete everything on phone)
-    ##7764726 – Hidden service menu for Motorola Droid
-    *#*#7594#*#* – Enable direct powering down of device once this code is entered
-    *#*#273283*255*663282*#*#* – Make a quick backup of all the media files on your Android device
-    *#*#232338#*#* – Shows Wi-Fi MAC address
-    *#*#1472365#*#* – Perform a quick GPS test
-    *#*#1575#*#* – For a more advanced GPS test
-    *#*#0283#*#* – Perform a packet loopback test
-    *#*#0*#*#* – Run an LCD display test
-    *#*#0289#*#* – Run Audio test
-    *#*#2663#*#* – Show device’s touch-screen version
-    *#*#0588#*#* – Perform a proximity sensor test
-    *#*#3264#*#* – Show RAM version
-    *#*#232331#*#* – Run Bluetooth test
-    *#*#232337#*# – Show device’s Bluetooth address
-    *#*#7262626#*#* – Perform a field test
-    *#*#8255#*#* – Monitor Google Talk service
-    *#*#4986*2650468#*#* – Show Phone, Hardware, PDA, RF Call Date firmware info
-    *#*#1234#*#* – Show PDA and Phone firmware info
-    *#*#2222#*#* – Show FTA Hardware version
-    *#*#44336#*#* – Show Build time and change list number
-    *#*#8351#*#* – Enable voice dialing log mode, dial *#*#8350#*#* to disable it
-    ##778 (+call) – Show EPST menu
-    These codes are specific to HTC devices only:
-    *#*#3424#*#* – Run HTC function test program
-    *#*#4636#*#* – Show HTC info menu
-    ##8626337# – Run VOCODER
-    ##33284# – Perform field test
-    *#*#8255#*#* – Launch Google Talk service monitor
-    ##3424# – Run diagnostic mode
-    ##3282# – Show EPST menu
-    ##786# – Reverse Logistics Support
-
-Android wpa_supplicant conf file path:
-    /data/misc/wifi/wpa_supplicant.conf
-
 Grub2 theme customization:
     theme.txt reference:
         http://wiki.rosalab.ru/en/index.php/Grub2_theme_/_reference#Main_file_syntax
@@ -889,7 +984,7 @@ Limit bandwidth, download/upload speed of process:
         XferCommand = /usr/bin/wget --limit-rate 100K --passive-ftp -c -O %o %u
 
 Qutebrowser
-    Adblocking:
+    Adblocking (obsolete, now builtin):
         https://gitlab.com/jgkamat/jblock
     Config:
         :set auto-save.session true
@@ -997,9 +1092,12 @@ Check for available package updates with Arch/Artix:
     sudo pacman -S pacman-contrib
     checkupdates
 
-Git push and pull using different URL/protocols:
-    # https://www.scivision.dev/git-pull-https-push-ssh/
-    git config url."git@example.org:user/".pushInsteadOf "https://example.org/user/"
+Git:
+    Git push and pull using different URL/protocols:
+        # https://www.scivision.dev/git-pull-https-push-ssh/
+        git config url."git@example.org:user/".pushInsteadOf "https://example.org/user/"
+    Prevent git from trying to auto-detect user name and email:
+        user.useConfigOnly = true
 
 Setup a midi synth:
     # http://www.tedfelix.com/linux/linux-midi.html
@@ -1061,3 +1159,76 @@ GPG:
 
 Windows use realtime clock as UTC:
     HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation\RealTimeIsUniversal = QWORD 0x01
+
+sway / wayland:
+    Get current active (first) keyboard layout name:
+        # https://queer.hacktivis.me/objects/73823f56-1954-44fe-b046-39e726cca67b
+        swaymsg -t get_inputs | jq 'map(select(.type == "keyboard"))[0].xkb_active_layout_name'
+
+Bluetooth:
+    Get access to deprecated gatttool, hcitool or sdptool:
+        trizen -S bluez-utils-compat
+            Add `--disable-systemd` to ./configure command on Artix
+    Setup new device with bluetoothctl:
+        # https://wiki.archlinux.org/title/Bluetooth#Pairing
+        bluetoothctl
+        [bluetooth]# power on
+        [bluetooth]# scan on
+        [bluetooth]# pair <MAC>
+    Fix `Failed to connect: org.bluez.Error.Failed`:
+        # In my case it was apparently pulseaudio's fault oO
+        sudo pacman -S pulseaudio-bluetooth
+        pactl load-module module-bluetooth-discover
+    Send files (WIP, still not working here):
+        # https://www.garron.me/en/go2linux/how-transfer-files-bluetooth-linux.html
+        # https://wiki.archlinux.org/title/ObexFTP
+        OBEX Object Push method:
+            trizen -S obexftp
+            sdptool search --bdaddr 00:18:31:12:3A:3F OPUSH | grep -i channel
+            # `--nopath --noconn --uuid none` result in making an Obex Push request
+            obexftp --nopath --noconn --uuid none --bluetooth <MAC> --channel <CHANNEL> --put <FILE>
+        OBEX File Transfer method:
+            trizen -S obexftp
+            sdptool search --bdaddr 00:18:31:12:3A:3F FTP | grep -i channel
+            # `--channel` (and so sdptool search) might be superfluous (autodetect?)
+            obexftp --bluetooth <MAC> --channel <CHANNEL> --put <FILE>
+        Blueman method:
+            sudo pacman -S blueman
+            blueman-sendto --device=<MAC> <FILE>
+            # Also, for the GUI:
+            blueman-manager
+        ussp-push method:
+            trizen -S ussp-push
+            ussp-push <MAC> <LOCAL FILE> <REMOTE FILE NAME>
+    Receive files:
+        # https://gitlab.com/obexpushd/mainline
+        # Not even packaged on the AUR for now
+    Bluetooth tools recap' (2007):
+        # https://hanishkvc.wordpress.com/2007/05/16/short-and-simple-commandline-bluetooth-in-any-new-linux-distros/
+
+Extract debian .deb package:
+    ar x <package>.deb
+    tar xf data.tar.xz
+
+Convert docx to text format in CLI:
+    # Better fidelity wrt. the document layout
+    docx2txt <name>.docx
+    # Can output markdown
+    pandoc <name>.docx -o <name>.md
+
+Flash BIOS using CH341A and SOP8 clip:
+    Hardware setup:
+        /!\ Don't connect USB before everything else is plugged-in correctly
+        /!\ Remove all source of alimentation from the target board (power jack AND battery)
+        Connect clip to EEPROM: red wire is pin 1
+        Connect clip to CH341A: use the SPI/BIOS side of the programmer
+    Reading firmware:
+        sudo pacman -S flashrom
+        # Flashrom list of supported chips: https://www.flashrom.org/Supported_hardware
+        # https://wiki.archlinux.org/title/Flashing_BIOS_from_Linux#Flashrom
+        sudo flashrom --programmer ch341a_spi -r backup1.bin
+        sudo flashrom --programmer ch341a_spi -r backup2.bin
+        # Check we got a correct read
+        cmp backup1.bin backup2.bin
+    Flashing firmware:
+        sudo flashrom --programmer ch341a_spi -w <new_firmware.bin>

vimtricks

@@ -6,6 +6,7 @@ NORMAL MODE
     <C-W>[HJKL]     Move split to extreme left, bottom, top, right
     c%              Replace argument with arbitrary nested paren/brackets/etc...
                     https://thepugautomatic.com/2014/03/vims-life-changing-c-percent/
+    g<C-G>          count words
 
 VISUAL MODE
     <C-V>g<C-A/X>        Convert column of identical number to inc/decrementing list