Randomfile

Summary:

A simple script that copies a random file from a directory and saves it on another dir with a standard name. Useful for random ringtones and wakeup songs!

Randomfile

Uranya (guest) 17 Aug 2013 14:25

Hi friends,

I have created this little script that chooses a random file from a directory and copies it to another dir.
I use it to have a different wakeup song every day! It works great, try it :)

#!/system/bin/sh
echo
if test "$1" = ""; then
     echo "Randomfile script by Uranya <[e-mail]> v 1.0.0 16.08.2013"
     echo "Usage:"
     echo "sh randomfile.sh <sourcedir> <extension> <destdir>"
     exit 1
fi
dirs=$1
ext=$2
dird=$3'/'
dest=$dird'random'.$ext
last='last.txt'
# create filename's array
list=($dirs/*.$ext)
# count number of files
num=${#list[@]}
# generate random number in range 1-NUM
let "ran=(${RANDOM} % ${num})+ 1"
echo Random number is $ran
sour=${list[ran]}
echo >$dird$last Last file is $sour
echo Last file is $sour
# copy the file
cp "$sour" $dest

Hope to be helpful, enjoy!

Bojan (guest) 16 Apr 2015 10:42

Here is what works for me, on MIUI v6 Dev, on Redmi 2.

Move mp3 files to /sdcard/Media/Music folder.

1createlist.sh, run to create list of mp3 files on device, after you add more music.

#!/system/bin/sh
resultdir="/sdcard/Media/"
musicdir=$resultdir'Music/'
#search inside one artist subfolder , if you wish, "Artist/" must be complete folder name.
#pathstring="Magazin/"
#pathstring="Tijana Dapcevic/"
listfile=$resultdir'list.txt'
#match filename if you wish, will NOT match path. Case sensitive, no -iname option.
#filestring="*ljuba"
busybox find $musicdir"$pathstring" -name $filestring'*.mp3' > $listfile
busybox wc -l $listfile

2copyrandomfile.sh, run to copy random file to /sdcard/Media/random.mp3, like in the morning, at boot

#!/system/bin/sh
resultdir="/sdcard/Media/"
musicdir=$resultdir'Music/'
listfile=$resultdir'list.txt'
destmfile=$resultdir'random.mp3'
# count number of files
numrows=$(grep -c ".*" $listfile)
# generate random number in range 1-NUM
# max number is around 32000
let "numrnd=(${RANDOM} % ${numrows})+ 1"
#echo Random number is $numrnd
sourcemfile=$(busybox sed -n "${numrnd}p" < $listfile)
echo $sourcemfile
# copy 
cp "$sourcemfile" $destmfile