Shell Programming and Scripting

import os

os.chdir(raw_input('plz enter directory name: '))
lst=os.listdir(os.getcwd())
class process:
	def getmetadata(self,filename):
		command='''mminfo %s|grep artist>/tmp/temp.txt'''%filename;#print command
		os.system(command)
		q=file('/tmp/temp.txt');self.artist=self.get(q.read());q.close()
		command='''mminfo %s|grep title>/tmp/temp.txt'''%filename
		os.system(command)
		q=file('/tmp/temp.txt');self.title=self.get(q.read());q.close()

	def __init__(self,filename):
		self.getmetadata(filename)
		os.rename(filename,self.artist+'_'+self.title+'.mp3')

	def get(self,s):#this returns the string after ':' in s
		num=s.find(':')
		return s[num+1:]
#print lst
for i in lst:
	#print i
	instance=process(str(i))	
	#print instance.title,instance.artist
#os.remove('/tmp/temp.txt')#/home/abhigyan/s

#!/bin/bash -x

#!/bin/bash


#Renames and organizes your music data.
#Provide the full path of your source music folder as an argument.
#Renames music files according to its metadata  in format "Artist - Title". 
#Creates a directory in the target folder with Artist name and Album name and stores file in it.


if [ -z "$1" ];then #setting default directory
	cd /home/abhigyan/Desktop/source
else	
	cd "$1"
fi

target_dir='/home/abhigyan/Desktop/target'

for F in ./*.mp3 #change this line to 'for F in ./*' if you have files other than mp3 format
do
	if [ -f "$F" ];then				
		artist=`mminfo "$F"|grep artist|awk -F: '{print $2}'` #getting metadata
		title=`mminfo "$F"|grep title|awk -F: '{print $2}'`
		album=`mminfo "$F"|grep album|awk -F: '{print $2}'`
		if [ -z "$album" ];then
		album="Unkown Album"
		fi
			if [  -n "$artist"  ] && [  -n "$title"  ];then
				filename="$artist - $title.mp3";#echo $filename
				cp "$F" "$filename"  #renaming the file(copy)
					if [ -d "$target_dir/$artist/$album" ];then    #moving file to the artist folder
						mv "$filename" "$target_dir/$artist/$album"  
					else
						mkdir -p "$target_dir/$artist/$album"
						mv "$filename" "$target_dir/$artist/$album"
					fi
			else
				echo -e "Skipping b/c insufficient metadata: $F \n"
			fi
	fi
done