diff --git a/scripts/shell/ffmpeg-get-video-res.sh b/scripts/shell/ffmpeg-get-video-res.sh
index e73741d..479f229 100755
--- a/scripts/shell/ffmpeg-get-video-res.sh
+++ b/scripts/shell/ffmpeg-get-video-res.sh
@@ -5,6 +5,11 @@ if [ $# -ne 1 ]; then
     exit 1
 fi
 
+if ! command -v "ffprobe" &> /dev/null; then
+    echo 'The "ffprobe" command is necessary in order to run the script, but was not found.'
+    exit 1
+fi
+
 input_file="$1"
 
 ffprobe -v error -select_streams v:0 -show_entries stream=width,height -of csv=s=x:p=0 "$input_file"
diff --git a/scripts/shell/ffmpeg-helper.sh b/scripts/shell/ffmpeg-helper.sh
index e41eba7..3c0c04f 100755
--- a/scripts/shell/ffmpeg-helper.sh
+++ b/scripts/shell/ffmpeg-helper.sh
@@ -105,6 +105,10 @@ fi
 
 ffmpeg_command="ffmpeg -i \"$input_file\""
 
+# if command -v ffmpeg.exe &> /dev/null; then
+#     ffmpeg_command="ffmpeg.exe -hwaccel d3d11va"
+# fi
+
 if [ "$remove_audio" = true ]; then
     ffmpeg_command+=" -an"
 fi
diff --git a/scripts/shell/gdl-twitter-thread.sh b/scripts/shell/gdl-twitter-thread.sh
index cefd413..338fd56 100755
--- a/scripts/shell/gdl-twitter-thread.sh
+++ b/scripts/shell/gdl-twitter-thread.sh
@@ -1 +1,6 @@
+if ! command -v "gallery-dl" &> /dev/null; then
+    echo 'The "gallery-dl" command is necessary in order to run the script, but was not found.'
+    exit 1
+fi
+
 gallery-dl -o conversations=1 --filter "author['name']==locals().get('reply_to')" $1
diff --git a/scripts/shell/gdl-update-todo.sh b/scripts/shell/gdl-update-todo.sh
index 8cdab33..94a215c 100755
--- a/scripts/shell/gdl-update-todo.sh
+++ b/scripts/shell/gdl-update-todo.sh
@@ -1,8 +1,8 @@
 #!/bin/bash
 
-gallery_dl_path=/mnt/e/home/Documents/Data\ hoarding
+gallery_dl_path=/mnt/e/home/Documents/data-hoarding
 cd "$gallery_dl_path"
 
-urls=($(grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*" -i "$gallery_dl_path/todo.txt"))
+urls=($(grep -Eo "(http|https)://[a-zA-Z0-9./?=_%:-]*" -i "$gallery_dl_path/todo.md"))
 
 for url in ${urls[@]}; do gallery-dl $url; done
diff --git a/scripts/shell/gdl.sh b/scripts/shell/gdl.sh
index 03bfa80..43ea7b7 100755
--- a/scripts/shell/gdl.sh
+++ b/scripts/shell/gdl.sh
@@ -1,4 +1,9 @@
-#!/bin/bash
+#!/usr/bin/zsh
+
+if ! command -v "gallery-dl" &> /dev/null; then
+    echo 'The "gallery-dl" command is necessary in order to run the script, but was not found.'
+    exit 1
+fi
 
 media_url=$1
 
diff --git a/scripts/shell/image-indexer.sh b/scripts/shell/images-indexer.sh
similarity index 79%
rename from scripts/shell/image-indexer.sh
rename to scripts/shell/images-indexer.sh
index 711e10e..bb81085 100755
--- a/scripts/shell/image-indexer.sh
+++ b/scripts/shell/images-indexer.sh
@@ -1,11 +1,38 @@
 #!/bin/bash
 
-# TODO: add interative selection of "kind of commission" for output folder
+commands_to_check=(gallery-dl gdl.sh)
+
+commands_not_found=()
+for command in ${commands_to_check[@]}; do
+    if ! command -v "$command" &> /dev/null; then
+        commands_not_found+=("$command")
+    fi
+done
+
+if [ ${#commands_not_found[@]} -ne 0 ]; then
+    echo 'The following commands are necessary in order to run the script, but were not found:'
+
+    for command in ${commands_not_found[@]}; do
+        echo "    \"$command\""
+    done
+
+    exit 1
+fi
 
 cur_dir=`pwd`
 furry_commission_ideas_path=/mnt/e/home/Documents/sync/nextcloud-pudimxyz-cloud/furry-commission-ideas
 furry_commission_ideas_urls_filename="urls.txt"
-scripts_path=~/repos/cloudalb/personal-devboot/scripts/shell
+scripts_path=/home/cloud/repos/personal-devboot/scripts/shell
+
+if [ ! -d $furry_commission_ideas_path ]; then
+    echo "[ERROR] The ideas folder was not found (\"$furry_commission_ideas_path\")"
+    exit 1
+fi
+
+if [ ! -d $scripts_path ]; then
+    echo "[ERROR] The scripts folder was not found (\"$scripts_path\")"
+    exit 1
+fi
 
 input_media_url() {
     read -p "[INFO] Please inform the media's url: " media_url
diff --git a/scripts/shell/run-streamlink.sh b/scripts/shell/run-streamlink.sh
deleted file mode 100755
index 10993ca..0000000
--- a/scripts/shell/run-streamlink.sh
+++ /dev/null
@@ -1,13 +0,0 @@
-#!/bin/bash
-
-# Check if a parameter is provided
-if [ -z "$1" ]; then
-  echo "Usage: $0 <FOO>"
-  exit 1
-fi
-
-# Assign the parameter to a variable
-FOO="$1"
-
-# Run the streamlink command
-streamlink.exe "$FOO" best
diff --git a/scripts/shell/scrcpy-wifi.sh b/scripts/shell/scrcpy-wifi.sh
deleted file mode 100755
index 2f5061d..0000000
--- a/scripts/shell/scrcpy-wifi.sh
+++ /dev/null
@@ -1,3 +0,0 @@
-# ADB_PATH="/mnt/c/Users/cloud/AppData/Roaming/NexusTools/adb.exe"
-# ADB=$ADB_PATH scrcpy --turn-screen-off --stay-awake --power-off-on-close
-scrcpy --turn-screen-off --stay-awake --power-off-on-close
diff --git a/scripts/shell/scrcpy.sh b/scripts/shell/scrcpy.sh
index 1db126e..600a470 100755
--- a/scripts/shell/scrcpy.sh
+++ b/scripts/shell/scrcpy.sh
@@ -1,2 +1,8 @@
-ADB_PATH="/mnt/e/programs/scrcpy-win64-v2.4"
-$ADB_PATH/scrcpy.exe --turn-screen-off --stay-awake --power-off-on-close --max-size=1024
+SCRCPY_PATH="/mnt/e/programs/scrcpy-win64-v2.4"
+
+if [ ! -d "$SCRCPY_PATH" ]; then
+    echo "The program's path does not exist ($SCRCPY_PATH)."
+    exit 1
+fi
+
+$SCRCPY_PATH/scrcpy.exe --turn-screen-off --stay-awake --power-off-on-close --max-size=1024