Cleanup & consistency

how_to

@@ -108,9 +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
@@ -256,11 +255,11 @@ PDF :
             Filling the form:
                 pdftk form.pdf fill_form fields.fdf output filled_form.pdf
 
-Generate a PDF quickly from Markdown:
+    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:
+    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
@@ -465,17 +464,14 @@ Serial terminal
     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:
+    # Replace is_wifi_connected with:
-        is_wifi_connected() { return 1 }
+    #    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
@@ -489,33 +485,6 @@ 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/
@@ -572,25 +541,39 @@ Nginx + uwsgi:
     runit:
         echo "exec uwsgi --ini /etc/uwsgi/emperor.ini --logto /var/log/uwsgi.log" > /etc/sv/uwsgi/run
 
-Easy LaTeX compilation:
+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 -.
+    # For debugging : | xargs feh -.
-    # Voir aussi la commande cmp, plus efficace qu'un calcul de hash dans certains cas
+    # See also the `cmp` command, might be more efficient than a hash computation
 
 Install and update YouCompleteMe on Arch:
     sudo pacman -S clang cmake
@@ -681,15 +664,15 @@ 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
 
@@ -766,14 +749,19 @@ Android:
                 ~/.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>
+        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
-        *#0*# – Enter the service menu on newer phones like Galaxy S III
             *#*#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
@@ -824,6 +812,40 @@ Android:
     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
 
@@ -944,7 +966,7 @@ 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