[Orgmode] [babel] After Tangle Change File Permission

[Ian Barton]

I am starting to use babel to maintain my collection of shell scripts. I 
want to automate the process as much as possible, so I would like to be 
able to set the execute bit on my tangled .sh scripts after the tangle 
process.

I see that there is an after-tangle hook. Can anyone give me some hints 
as to how I might use this to execute a chmod *.sh on the directory 
containing my tangles shell scripts.

Ian.