Script to move one filetype and create a subfolder, if it exists?

An easy version that always creates flac and mp3 subdirectories (unless they would be empty), using the find command to execute a script to create a subdirectory if necessary and move the file there:

find . -name '*.mp3' -o -name '*.flac' -exec sh -c 'mkdir -p "${0%/*}/${0##*.}" && mv "$0" "${0%/*}/${0##*.}"' {} \; 

For each file for which the shell snippet is executed, $0 is the path to the file, ${0%/*} is the directory part and ${0##*.} is the extension.

Alternatively, in bash (or ksh93 with set -o globstar instead of shopt -s globstar extglob, or in zsh without setopt ksh_glob instead), using the ** pattern:

shopt -s globstar extglob for x in **/*.@(mp3|flac); do mkdir -p "${x%/*}/${x##*.}" && mv "$x" "${x%/*}/${x##*.}" done 

Now let's make a version that doesn't create a subdirectory if all the files have the same extension. Here it's easier to recurse on the directories. This is for bash (it can be adapted to ksh93 or zsh). In each directory, the script collects the list of all files (excluding . and ..), all.flacfiles and all.mp3files in arrays. If there is at least one flac file and at least one non-flac files, move the flac files to aflac` subdirectory. Ditto for mp3 files.

shopt -s globstar nullglob; GLOBIGNORE=.:.. start_wd=$PWD for dir in "$PWD"/**/*/; do cd "$dir" files=(*) flac_files=(*.flac) mp3_files=(*.mp3) if ((${#flac_files[@]} > 0 && ${#flac_files[@]} < ${#files[@]})); then mkdir flac && mv "${flac_files[@]}" flac/ fi if ((${#mp3_files[@]} > 0 && ${#mp3_files[@]} < ${#files[@]})); then mkdir mp3 && mv "${mp3_files[@]}" mp3/ fi done cd "$start_wd" 

Use this:

#!/bin/bash find /files/music/artist -type f -name '*.flac' | while IFS= read -r file; do dir="$(dirname "$file")" file="$(basename "$file")" shopt -s nullglob mp3s=( "$dir"/*.mp3 ) if ! [[ ${#mp3s[@]} -eq 0 ]]; then ext="${file##*.}" mkdir -p "$dir/$ext" && mv -i "$dir/$file" "$dir/$ext" fi done 

• find will find files having .flac extension in the mentioned directory and all its subdirectories.

• dir will contain the directory names of the files and file will have the file name

• Then we have checked if that directory has any .mp3 file, if not then the files will remain as it is in the directory

• If there is any .mp3 file in that directory, then a directory having the name of the extension (flac) will be created and .flac files will moved to that directory.

You have a bit complicated requirements, but this script might help.

#!/bin/bash run() { if $DRYRUN; then echo -n + printf " '%s'" "$@" echo else "$@" fi } DRYRUN=false if test x"$1" = x-d; then DRYRUN=true shift fi for dir in "$@"; do find "$dir" -type d | while read subdir; do if ls "$subdir"/*.flac >/dev/null 2>&1; then if ls "$subdir"/*.mp3 >/dev/null 2>&1; then run mkdir -p "$subdir"/flac run mv "$subdir"/*.flac "$subdir"/flac fi fi done done 

You can see what will be going on by specifying -d. Be sure double-check it before actual moves.

$ ./script.sh -d /files/music + 'mkdir' '-p' '/files/music/artist/album2/flac' + 'mv' '/files/music/artist/album2/01-yet another.flac' '/files/music/artist/album2/flac' + 'mkdir' '-p' '/files/music/artist/album1/flac' + 'mv' '/files/music/artist/album1/01-song 1.flac' '/files/music/artist/album1/02-another song.flac' '/files/music/artist/album1/flac'