literate-dotfiles/dotfiles/binaries.org

#+TITLE: Binaries
:DRAWER:
#+STARTUP: overview

#+LANGUAGE: en
#+EMAIL: dehaeze.thomas@gmail.com
#+AUTHOR: Dehaeze Thomas

#+HTML_LINK_HOME: ./index.html
#+HTML_LINK_UP: ./index.html

#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="./css/htmlize.css"/>
#+HTML_HEAD: <link rel="stylesheet" type="text/css" href="./css/readtheorg.css"/>
#+HTML_HEAD: <script type="text/javascript" src="./js/jquery.min.js"></script>
#+HTML_HEAD: <script type="text/javascript" src="./js/bootstrap.min.js"></script>
#+HTML_HEAD: <script type="text/javascript" src="./js/jquery.stickytableheaders.min.js"></script>
#+HTML_HEAD: <script type="text/javascript" src="./js/readtheorg.js"></script>
:END:

* Select Screen
:PROPERTIES:
:header-args: :tangle ~/bin/displayselect
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:
Script taken from Luke Smith.

#+begin_src bash
  twoscreen() { # If multi-monitor is selected and there are two screens.

      mirror=$(printf "no\\nyes" | dmenu -i -p "Mirror displays?")
      # Mirror displays using native resolution of external display and a scaled
      # version for the internal display
      if [ "$mirror" = "yes" ]; then
          external=$(echo "$screens" | dmenu -i -p "Optimize resolution for:")
          internal=$(echo "$screens" | grep -v "$external")

          res_external=$(xrandr --query | sed -n "/^$external/,/\+/p" | \
                             tail -n 1 | awk '{print $1}')
          res_internal=$(xrandr --query | sed -n "/^$internal/,/\+/p" | \
                             tail -n 1 | awk '{print $1}')

          res_ext_x=$(echo $res_external | sed 's/x.*//')
          res_ext_y=$(echo $res_external | sed 's/.*x//')
          res_int_x=$(echo $res_internal | sed 's/x.*//')
          res_int_y=$(echo $res_internal | sed 's/.*x//')

          scale_x=$(echo "$res_ext_x / $res_int_x" | bc -l)
          scale_y=$(echo "$res_ext_y / $res_int_y" | bc -l)

          xrandr --output "$external" --auto --scale 1.0x1.0 \
                 --output "$internal" --auto --same-as "$external" \
                 --scale "$scale_x"x"$scale_y"
      else

          primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
          secondary=$(echo "$screens" | grep -v "$primary")
          direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
          xrandr --output "$primary" --auto --scale 1.0x1.0 --output "$secondary" --"$direction"-of "$primary" --auto --scale 1.0x1.0
      fi
  }

  morescreen() { # If multi-monitor is selected and there are more than two screens.
      primary=$(echo "$screens" | dmenu -i -p "Select primary display:")
      secondary=$(echo "$screens" | grep -v "$primary" | dmenu -i -p "Select secondary display:")
      direction=$(printf "left\\nright" | dmenu -i -p "What side of $primary should $secondary be on?")
      tertiary=$(echo "$screens" | grep -v "$primary" | grep -v "$secondary" | dmenu -i -p "Select third display:")
      xrandr --output "$primary" --auto --output "$secondary" --"$direction"-of "$primary" --auto --output "$tertiary" --"$(printf "left\\nright" | grep -v "$direction")"-of "$primary" --auto
  }

  multimon() { # Multi-monitor handler.
      case "$(echo "$screens" | wc -l)" in
          1) xrandr $(echo "$allposs" | grep -v "$screens" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
          2) twoscreen ;;
          ,*) morescreen ;;
      esac ;}

  # Get all possible displays
  allposs=$(xrandr -q | grep "connected")

  # Get all connected screens.
  screens=$(echo "$allposs" | grep " connected" | awk '{print $1}')

  # Get user choice including multi-monitor and manual selection:
  chosen=$(printf "%s\\ncancel\\nmulti-monitor\\nmanual selection" "$screens" | dmenu -i -p "Select display arangement:") &&
      case "$chosen" in
          "cancel") exit ;;
          "manual selection") arandr ; exit ;;
          "multi-monitor") multimon ;;
          ,*) xrandr --output "$chosen" --auto --scale 1.0x1.0 $(echo "$allposs" | grep -v "$chosen" | awk '{print "--output", $1, "--off"}' | tr '\n' ' ') ;;
      esac

  $HOME/.config/polybar/scripts/launch.sh # restart polybar
  pgrep -x dunst >/dev/null && killall dunst && setsid dunst & # Restart dunst to ensure proper location on screen
#+end_src

* getbib
:PROPERTIES:
:header-args: :tangle ~/bin/getbib
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:
#+begin_src bash
  [ -z "$1" ] && echo "Give either a pdf file or a DOI as an argument." && exit

  if [ -f "$1" ]; then
      # Try to get DOI from pdfinfo or pdftotext output.
      doi=$(pdfinfo "$1" | grep -io "doi:.*") ||
          doi=$(pdftotext "$1" 2>/dev/null - | grep -io "doi:.*" -m 1) ||
          exit 1
  else
      doi="$1"
  fi

  # Check crossref.org for the bib citation.
  curl -s "http://api.crossref.org/works/$doi/transform/application/x-bibtex" -w "\\n"
#+end_src

* vpnToggle
:PROPERTIES:
:header-args: :tangle ~/bin/vpntoggle
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  if [[ $(nordvpn status) == *"Connected"* ]]; then
    nordvpn disconnect && dunstify --replace=23198 "VPN" "Disconnected";
  else
    country=`cat ~/bin/nordvpn_countries.txt | sed 's/\s*\t\s*/ /g ; s/\s/\n/g ; s/_/ /g ; /^[a-zA-Z]/!d ; s/\(.*\)/\L\1/' | rofi -i -dmenu | sed 's/\s/_/g'`;
    dunstify --replace=23198 "VPN" "Connecting to $country...";
    nordvpn connect $country && dunstify --replace=23198 "VPN" "Connected to $country";
  fi
#+end_src

* bukurun
:PROPERTIES:
:header-args: :tangle ~/bin/bukurun
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
_rofi () {
    rofi -dmenu -i -no-levenshtein-sort -width 1000 "$@"
}

# display settings
display_type=1
max_str_width=80

# keybindings
switch_view="Alt+Tab"
new_bookmark="Alt+n"
actions="Alt+a"
edit="Alt+e"
delete="Alt+d"

# colors
help_color="#334433"

# source global config
if [[ -f /etc/buku_run.config ]]
then
  source /etc/buku_run.config
fi

# source local config:
if [[ -z $XDG_CONFIG_DIR ]]
then
  if [[ -f $HOME/.config/buku_run/config ]]
  then
    source $HOME/.config/buku_run/config
  else
    echo "User config file \'~/.config/buku_run/config\' not found. using global config"
  fi
else
  if [[ -f "${XDG_CONFIG_DIR}/buku_run/config" ]]
  then
    source "${XDG_CONFIG_DIR}/buku_run/config"
  else
    echo "User config file \'~/.config/buku_run/config\' not found. using global config"
  fi
fi


main () {
    HELP="Welcome to Buku. Use <span color='${help_color}'>${new_bookmark}</span> to add a new Bookmark
Use <span color='${help_color}'>${switch_view}</span> to switch View. <span color='${help_color}'>${actions}</span> for actions"
    if [[ $mode == "bookmarks" ]]; then
        content=$(parseBuku)
        menu=$(echo "${content}" | _rofi -p '> ' -filter "${filter}" -mesg "${HELP}" -kb-custom-1 "${new_bookmark}" -kb-custom-2 "${switch_view}" -kb-custom-3 "${actions}" -kb-custom-4 "${edit}" -kb-custom-5 "${delete}")
    elif [[ $mode == "tags" ]]; then
        menu=$(buku --np --st | awk '{$NF=""; print $0}' | cut -d ' ' -f2-  | _rofi -p '> ' -mesg "${HELP}" -kb-custom-1 "${new_bookmark}" -kb-custom-2 "${switch_view}" -kb-custom-3 "${actions}" -kb-custom-4 "${edit}" -kb-custom-5 "${delete}")
    fi
    val=$?
    if [[ $val -eq 1 ]]; then
        exit
    elif [[ $val -eq 12 ]]; then
        optionsMenu
    elif [[ $val -eq 10 ]]; then
        addMark
    elif [[ $val -eq 14 ]]; then
        deleteMenu
    elif [[ $val -eq 13 ]]; then
        editMenu
    elif [[ $val -eq 11 ]]; then
        if [[ $mode == "bookmarks" ]]; then
            export mode="tags"
            mode=tags main
        elif [[ $mode == "tags" ]]; then
            export mode="bookmarks"
            mode=bookmarks main
        fi
    elif [[ $val -eq 0 ]]; then
        if [[ $mode == "bookmarks" ]]; then
            id=$(getId "$content" "$menu")
            for bm in ${id}; do
                buku -o "${bm}"
            done
        elif [[ $mode == "tags" ]]; then
            filter="${menu}" mode="bookmarks" main
        fi
    fi
}

optionsMenu () {
    if [[ $mode == "bookmarks" ]]; then
        askmenu=$(echo -e "< Return\n---\n1. Edit\n2. Delete" | _rofi -p '> ' -mesg "Choose Action for bookmark")
        val=$?
        if [[ $val -eq 1 ]]; then
            exit
        elif [[ $val -eq 0 ]]; then
            if [[ $askmenu == "< Return" ]]; then
                export mode=bookmarks
                main
            elif [[ $askmenu == "1. Edit" ]]; then
                editMenu
            elif [[ $askmenu == "2. Delete" ]]; then
                deleteMenu
            fi
        fi
    elif [[ $mode == "tags" ]]; then
        askmenu=$(echo -e "< Return\n---\n1. Replace Tag\n2. Delete Tag" | _rofi -p '> ' -mesg "Choose Action for tag \"${menu}\"")
        val=$?
        if [[ $val -eq 1 ]]; then
            exit
        elif [[ $val -eq 0 ]]; then
            if [[ $askmenu == "< Return" ]]; then
                export mode=tags
                main
            elif [[ $askmenu == "1. Replace Tag" ]]; then
                newtag=$(echo | _rofi -p '> ' -mesg "Enter new tag name for tag \"${menu}\"")
                val=$?
                if [[ $val -eq 1 ]]; then
                    exit
                elif [[ $val -eq 0 ]]; then
                    if [[ $newtag == "" ]]; then
                        mode=tags main
                    else
                        buku -r "${menu}" "${newtag}"
                        mode=tags main
                    fi
                fi
            elif [[ $askmenu == "2. Delete Tag" ]]; then
                delask=$(echo -e "1. Yes\n2. No" | _rofi -p '> ' -mesg "Really delete tag?")
                val=$?
                if [[ $val -eq 1 ]]; then
                    exit
                elif [[ $val -eq 0 ]]; then
                    if [[ $delask == "1. Yes" ]]; then
                        buku -r "${menu}"
                        mode=tags main
                    elif [[ $delask == "2. No" ]]; then
                        mode=tags main
                    fi
                fi
            fi
        fi
    fi
}

deleteMenu () {
    id=$(getId "$content" "$menu")
    delask=$(echo -e "1. Yes\n2. No" | _rofi -p '> ' -mesg "Really delete bookmark?")
    val=$?
    if [[ $val -eq 1 ]]; then
        exit
    elif [[ $val -eq 0 ]]; then
        if [[ $delask == "1. Yes" ]]; then
            buku -d ${id} --tacit
            mode=bookmarks main
        elif [[ $delask == "2. No" ]]; then
            optionsMenu
        fi
    fi
}

editMenu () {
    id=$(getId "$content" "$menu")
    title="$(getTitleFromId $id)"
    bookmark="$(getUrlFromId $id)"
    tags="$(getTagsFromId $id)"
    content=$(echo -e "1. title: $title\n2. url: $bookmark\n3. tags: $tags")
    editmenu=$(echo -e "< Return\n---\n${content}" | _rofi -p '> ')
    val=$?
    if [[ $val -eq 1 ]]; then
        exit
    elif [[ $val -eq 0 ]]; then
        if [[ $editmenu == "< Return" ]]; then
            main
        elif [[ $editmenu == "tags: NOTAG" ]]; then
            addTags --update
        elif [[ $editmenu =~ tags:* ]]; then
            tags="${tags}" editTags
        elif [[ $editmenu =~ url:* ]]; then
            editBookmark
        elif [[ $editmenu =~ title:* ]]; then
            editTitle
        fi
    fi
}

editTags () {
    edittagsmenu=$(echo | _rofi -filter "${tags}" -p '> ' -mesg "Edit Tags and hit Enter")
    val=$?
    if [[ $val -eq 1 ]]; then
        exit
    elif [[ $val -eq 0 ]]; then
        buku -u ${id} --tag "${edittagsmenu}"
    fi
    mode=bookmarks main
}

editBookmark () {
    bmarkmenu=$(echo "" | _rofi -p "> " -filter "${bookmark}" -mesg "Edit Bookmark and hit Enter")
    val=$?
    if [[ $val -eq 1 ]]; then
        exit
    elif [[ $val -eq 0 ]]; then
        if [[ $bmarkmenu == "http"* ]]; then
            buku -u "${id}" --url "${bmarkmenu}"
        else
            echo "" | rofi -e "Not a valid URI, Make sure URLs start with http"
            editBookmark
        fi
    fi
    mode=bookmarks main
}

editTitle () {
  titlemenu=$(echo "" | _rofi -p "> " -filter "${title}" -mesg "Edit Title and hit Enter")
  val=$?
  if [[ $val -eq 1 ]]; then
    exit
  elif [[ $val -eq 0 ]]; then
    buku -u "${id}" --title "${titlemenu}"
  fi
  mode=bookmarks main
}

addMark () {
    inserturl=$(echo -e "$(xclip -o)" | _rofi -p '> ' -mesg "Use URL below or type manually")
    val=$?
    if [[ $val -eq 1 ]]; then
        exit
    elif [[ $val -eq 0 ]]; then
        addTags
    fi
}

addTags () {
    inserttags=$(buku --np --st | awk '{$NF=""; print $0}' | cut -d ' ' -f2- | _rofi -p '> ' -mesg "Add some tags. Separate tags with ', '")
    val=$?
    if [[ $val -eq 1 ]]; then
        exit
    elif [[ $val -eq 0 ]]; then
        if [[ $(echo "${inserttags}" | wc -l) -gt 1 ]]; then
            taglist=$(echo "${inserttags}" | tr '\n' ',')
            tags=()
            for tag in $taglist; do
                tags+=("$tag")
            done
        else
            tags=${inserttags}
        fi
        if [[ $1 == "--update" ]]; then
            buku -u "${id}" --tag ${tags}
        else
            buku -a ${inserturl} ${tags}
        fi
    fi
}

parseBuku () {
  echo "$(buku --nc -p | gawk -v max="$max_str_width" -v type="$display_type" '
BEGIN {
  RS=""
  FS="\n"
}
{
  if ($3 == "")
    $3 = " # NOTAG"
  id = gensub(/([0-9]+)\.(.*)/, "\\1", "g", $1)
  url = substr(gensub(/\s+> (.*)/, "\\1", "g", $2),0,max)
  tags = gensub(/\s+# (.*)/, "\\1", "g", $3)
  title = substr(gensub(/[0-9]+\.\s*(.*)/, "\\1", "g", $1),0,max)

  if (type == 1)
    print id "\t" url "\t" tags
  else
    print id "\t" title "\t" tags
    if (type == 3)
      print " \t" url "\t "
  print ""
}
' | column -t -s $'\t')"
}

getId () {
  id=$(echo "${2%% *}")
  if [ -z "$id" ]; then
    prev=""
    IFS=$'\n'
    for line in $1; do
      if [ "$2" = "$line" ]; then
        id=$(echo "${prev%% *}")
        break
      else
        prev="$line"
      fi
    done
  fi
  echo $id
}

getTitleFromId () {
  echo "$(buku --nc -p $1 | gawk '
  BEGIN {
    RS=""
    FS="\n"
  }
  {
    print gensub(/[0-9]+\.\s*(.*)/, "\\1", "g", $1)
  }
  ')"
}

getUrlFromId () {
  echo "$(buku --nc -p $1 | gawk '
  BEGIN {
    RS=""
    FS="\n"
  }
  {
    print gensub(/\s+> (.*)/, "\\1", "g", $2)
  }
  ')"
}

getTagsFromId () {
  echo "$(buku --nc -p $1 | gawk '
  BEGIN {
    RS=""
    FS="\n"
  }
  {
    print gensub(/\s+# (.*)/, "\\1", "g", $3)
  }
  ')"
}

mode=bookmarks main
#+end_src
* i3exit
:PROPERTIES:
:header-args: :tangle ~/bin/i3exit
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  # with openrc use loginctl
  case "$1" in
      lock)
          ~/scripts/lockscreen.sh
          ;;
      logout)
          loginctl terminate-session `loginctl session-status | head -n 1 | awk '{print $1}'`
          ;;
      switch_user)
          dm-tool switch-to-greeter
          ;;
      suspend)
          systemctl suspend && ~/scripts/lockscreen.sh
          ;;
      hibernate)
          systemctl hibernate && ~/scripts/lockscreen.sh
          ;;
      reboot)
          systemctl reboot
          ;;
      shutdown)
          systemctl poweroff
          ;;
      ,*)
          echo "== ! i3exit: missing or invalid argument ! =="
          echo "Try again with: lock | logout | switch_user | suspend | hibernate | reboot | shutdown"
          exit 2
  esac

  exit 0
#+end_src

* readbib
:PROPERTIES:
:header-args: :tangle ~/bin/readbib
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:
#+begin_src bash
  cd ~/Cloud/thesis/ressources/pdfs/ && ls | rofi -dmenu -lines 20 | xargs -I {} zathura {}
#+end_src

* readnotes
:PROPERTIES:
:header-args: :tangle ~/bin/readnotes
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:
#+begin_src bash
  cd ~/Cloud/thesis/ressources/notes/pdfs/ && ls *.pdf | rofi -dmenu -lines 20 | xargs -I {} zathura {}
#+end_src

* askpass
:PROPERTIES:
:header-args: :tangle ~/bin/askpass-rofi
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:
Take password prompt from STDIN, print password to STDOUT.
The sed piece just removes the colon from the provided prompt: =rofi -p= already gives us a colon
#+BEGIN_SRC bash
  rofi -dmenu \
       -password \
       -no-fixed-num-lines \
       -p "$(printf "$1" | sed s/://)"
#+END_SRC

* Take Screenshot
:PROPERTIES:
:header-args: :tangle ~/bin/screenshot
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  status=$(echo -e "All\nGUI\nSelection\nCropped\nCopy\nShadow\nActive" | rofi -i -dmenu -p "Type")
  if [ -z "$status" ]; then
    exit;
  fi

  name=$(echo -e "screenshot-$(date +"%m-%d-%y_%H-%M-%S")" | rofi -i -dmenu -p "Filename")
  if [ -z "$name" ]; then
    exit;
  fi

  case "$status" in
      "All")
          maim ~/Pictures/$name.png ;;
      "GUI")
          flameshot gui -r > ~/Pictures/$name.png ;;
      "Selection")
          maim -s ~/Pictures/$name.png ;;
      "Cropped")
          maim -s ~/Pictures/$name.png && convert -trim ~/Pictures/$name.png ~/Pictures/$name.png;;
      "Copy")
          maim -s | xclip -selection clipboard -t image/png ;;
      "Shadow")
          maim -st 9999999 | convert - \( +clone -background black -shadow 80x3+5+5 \) +swap -background none -layers merge +repage ~/Pictures/$name.png ;;
      "Active")
          maim -i $(xdotool getactivewindow) ~/Pictures/$name.png ;;
  esac
#+end_src

* Remote Desktop Connect
:PROPERTIES:
:header-args: :tangle ~/bin/remote-desktop
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  computer=$(echo -e 'RNICE\nPCMEL1\nPCNASS1\nPCMEG01' | dmenu -p 'Computer:' -l 20);

  case $computer in
      PCMEL1)
            rdesktop -a 16 -P -z -x m -r sound:off -g "80%" -u "ESRF\OPPEL" -p $(pass esrf/PCMEL1/OPPEL | sed -n 1p) pcmel1
            ;;
      PCMEG01)
            rdesktop -a 16 -P -z -x m -r sound:off -g "80%" -u "ESRF\DEHAEZE" -p $(pass ssl.esrf.fr/dehaeze | sed -n 1p) pcmeg01
            ;;
      PCNASS1)
            rdesktop -a 16 -P -z -x m -r sound:off -g "80%" -u "ESRF\DEHAEZE" -p $(pass ssl.esrf.fr/dehaeze | sed -n 1p) pcnass1
            ;;
      RNICE)
            echo "Not yet implemented"
            ;;
      ,*)
            echo "Not existing"
            ;;
  esac
#+end_src

* Toggle Network
:PROPERTIES:
:header-args: :tangle ~/bin/network-toggle
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  result=$(nmcli device | sed '1d' | dmenu -l 20);

  interface=$(echo $result | awk -F ' ' '{print $1}');
  status=$(echo $result | awk -F ' ' '{print $3}');

  if [ $status == 'disconnected' ]; then
    nmcli device connect $interface
  else
    nmcli device disconnect $interface
  fi
#+end_src

* Print on Rnice
:PROPERTIES:
:header-args: :tangle ~/bin/print-rnice
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  nbpage=$(echo -e '1\n2\n4' | dmenu -p 'Number of pages per sheet' -l 20);
  sides=$(echo -e 'one-sided\ntwo-sided-long-edge\ntwo-sided-short-edge' | dmenu -p 'Two Sided:' -l 20);

  # First copy the file to Rnice
  if sshpass -p "$(pass ssl.esrf.fr/dehaeze | sed -n 1p)" scp $1 dehaeze@rnice:~/Downloads/; then
    # Then print on Rnice
    sshpass -p "$(pass ssl.esrf.fr/dehaeze | sed -n 1p)" ssh dehaeze@rnice "lpr -o media=A4 -o sides=$sides -o number-up=$nbpage -P ctb110c1u ~/Downloads/$1";
    # Finally, delete the file
  else
    echo "Command Failed"
  fi
#+end_src

* Mount TMP14DAYS
:PROPERTIES:
:header-args: :tangle ~/bin/mnt_tmp_14_days
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  sudo -A mkdir ~/tmp_14_days;
  sudo -A mount -o rw,relatime,vers=3,rsize=1048576,wsize=1048576,namlen=255,hard,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=160.103.232.103,mountvers=3,mountport=597,mountproto=tcp,local_lock=none,addr=160.103.232.103 rnice:/hz/tmp_14_days ~/tmp_14_days;
#+end_src

* Make GIF
:PROPERTIES:
:header-args:  :tangle ~/bin/make-gif
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:
http://blog.pkh.me/p/21-high-quality-gif-with-ffmpeg.html

#+begin_src bash
  palette="/tmp/palette.png"

  filters="fps=15,scale=320:-1:flags=lanczos"

  ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
  ffmpeg -v warning -i $1 -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y $2
#+end_src
* Download-Audio
:PROPERTIES:
:header-args:  :tangle ~/bin/yt-audio
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
if [ $TMUX ]; then
    tmux split -v -l 5 "cd ~/Downloads/ && youtube-dl --add-metadata -xic -f bestaudio/best $1" && tmux select-pane -U
else
    cd ~/Downloads/;
    setsid nohup youtube-dl --add-metadata -xic -f bestaudio/best $1 &> /dev/null &
fi
#+end_src

* Download-Video
:PROPERTIES:
:header-args:  :tangle ~/bin/yt-video
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
if [ $TMUX ]; then
    tmux split -v -l 5 "cd ~/Downloads/ && youtube-dl --add-metadata -ic $1" && tmux select-pane -U
else
    cd ~/Downloads/;
    setsid nohup youtube-dl --add-metadata -ic $1 &> /dev/null &
fi
#+end_src
* Pdf Shrink
:PROPERTIES:
:header-args:  :tangle ~/bin/pdf-shrink
:header-args+: :comments both :mkdirp yes
:header-args+: :shebang "#!/usr/bin/env bash"
:END:

#+begin_src bash
  shrink ()
  {
  gs \
    -q -dNOPAUSE -dBATCH -dSAFER \
    -sDEVICE=pdfwrite \
    -dCompatibilityLevel=1.3 \
    -dPDFSETTINGS=/screen \
    -dEmbedAllFonts=true \
    -dSubsetFonts=true \
    -dAutoRotatePages=/None \
    -dColorImageDownsampleType=/Bicubic \
    -dColorImageResolution=$3 \
    -dGrayImageDownsampleType=/Bicubic \
    -dGrayImageResolution=$3 \
    -dMonoImageDownsampleType=/Subsample \
    -dMonoImageResolution=$3 \
    -sOutputFile="$2" \
    "$1"
  }

  check_smaller ()
  {
  # If $1 and $2 are regular files, we can compare file sizes to
  # see if we succeeded in shrinking. If not, we copy $1 over $2:
  if [ ! -f "$1" -o ! -f "$2" ]; then
  return 0;
  fi
  ISIZE="$(echo $(wc -c "$1") | cut -f1 -d\ )"
  OSIZE="$(echo $(wc -c "$2") | cut -f1 -d\ )"
  if [ "$ISIZE" -lt "$OSIZE" ]; then
  echo "Input smaller than output, doing straight copy" >&2
  cp "$1" "$2"
  fi
  }

  usage ()
  {
  echo "Reduces PDF filesize by lossy recompressing with Ghostscript."
  echo "Not guaranteed to succeed, but usually works."
  echo "  Usage: $1 infile [outfile] [resolution_in_dpi]"
  }

  IFILE="$1"

  # Need an input file:
  if [ -z "$IFILE" ]; then
  usage "$0"
  exit 1
  fi

  # Output filename defaults to "-" (stdout) unless given:
  if [ ! -z "$2" ]; then
  OFILE="$2"
  else
  OFILE="-"
  fi

  # Output resolution defaults to 72 unless given:
  if [ ! -z "$3" ]; then
  res="$3"
  else
  res="90"
  fi

  shrink "$IFILE" "$OFILE" "$res" || exit $?

  check_smaller "$IFILE" "$OFILE"
#+end_src