Make sh scrips POSIX compliant

Using shellcheck, I went through all of them to make them standards
compliant. I also tested as many as I could.

1 files changed, 4 insertions, 6 deletions

diff --git a/video_download.sh b/video_download.sh
index ffbc4f7..acf52c9 100755
--- a/video_download.sh
+++ b/video_download.sh
@@ -3,20 +3,18 @@
 VIDE_DIR="/var/tank/videos/Videos/"
 PLAY_DIR="/var/tank/videos/Playlists/"
 
-PLAY_SUBS="$(ls -1 ${PLAY_DIR})"
-
 LAST_FILE="${XDG_CACHE_HOME:-$HOME/.cache}/video_download"
 
 get_videos () {
-  cd "$VIDE_DIR"
+  cd "$VIDE_DIR" || exit 1
   yt-dlp "$(cat url.txt)"
   date '+%s' > "${LAST_FILE}.video.txt"
 }
 
 get_playlists () {
-  cd "$PLAY_DIR"
-  ls -1 | while read subdir; do
-    cd "$PLAY_DIR/$subdir"
+  cd "$PLAY_DIR" || exit 1
+  find ./* -maxdepth 1 -type d | while read -r subdir; do
+    cd "$PLAY_DIR/$subdir" || exit 1
     yt-dlp "$(cat url.txt)"
   done
 }