Bash script on OS X

[santanudas]

Hi guys,

I was trying to write small bash script, which reads the iTunes’ Library.xml file and then print the name of the songs based on the “given” artist. And I came up with something like this:

cat ~/Music/iTunes/iTunes\ Music\ Library.xml | tr \\n ' ' | sed 's%</dict>%\n%g' | sed -e 's%<[/[:alnum:]]*>% %g' -e 's/[[:space:]][[:space:]]*/ /g' | grep 'Artist ABBA' | sed -e 's/.*\(file:[[:graph:]]*\).*/\1/g' -e  's%.*/%%g' | sed -e 's/%20/ /g' -e '\,$, s/\.[a-zA-Z0-9]*//' | sort

What is doing is: Reading the file > joining all the lines together > breaking the (putting a new line) after every </dict> (so that all the value between <dict> and <\dict> in a single line now) > grep the Artist name and the associated <Name> value (i.e. song) for every single occurrence.

It's working pretty well under Linux but not on the OS X. Any idea why? Many thanks in advance for helping. Cheers!!

 

[JustinEzequiel]

just guessing but IIRC for line ends
mac uses \r
linux uses \n
windows uses \r\n

 

[santanudas]

Thanks for your replay, JustinEzequiel. I replaced all the \n with \r – that certainly improves the situation a little better but still not quite working. Any other suggestion(s)??

 

[JustinEzequiel]

what errors are you getting?
if none,
what output did you get
and what output did you expect to get?

 

[santanudas]

I copied the "iTunes Music Library.xml" as "Library.xml" to my Linux box and running the script returns these:

[MacUsers@linux]$ cat Library.xml | tr \\n ' ' | sed 's%</dict>%\n%g' | sed -e 's%<[/[:alnum:]]*>% %g' -e 's/[[:space:]][[:space:]]*/ /g' | grep 'Artist ABBA' | sed -e 's/.*\(file:[[:graph:]]*\).*/\1/g' -e  's%.*/%%g' | sed -e 's/%20/ /g' -e '\,$, s/\.[a-zA-Z0-9]*//' | sort  
Chiquitita
Dancing Queen
Does Your Mother Know
Gimmie Gimmie Gimmie
Honey Honey
I Do I Do I Do I Do
I Have A Dream
Knowing Me Knowing You
Lay All Your Love On Me
......
......

This is exactly what I expect and I get.
Running the same script on my Mac (replacing /n with /r), all I get onlt these:

macm:~ MacUsers$ cat ~/Music/iTunes/iTunes\ Music\ Library.xml | tr \\r ' ' | sed 's%</dict>%\r%g' | sed -e 's%<[/[:alnum:]]*>% %g' -e 's/[[:space:]][[:space:]]*/ /g' | grep 'Artist ABBA' | sed -e 's/.*\(file:[[:graph:]]*\).*/\1/g' -e  's%.*/%%g' | sed -e 's/%20/ /g' -e '\,$, s/\.[a-zA-Z0-9]*//' | sort 
 Artist ABBA 
 Artist ABBA 
 Artist ABBA 
 Artist ABBA 
 Artist ABBA 
 Artist ABBA 
 Artist ABBA 
 Artist ABBA 
 Artist ABBA 
 ......
 ......

as far as I can understand, it’s not working mainly because the “joining” part is not working on OS X. I must have been missing something or doing something wrong with the commands on Mac.

 

[JustinEzequiel]

perhaps try each command individually on the mac to see where it fails?