7.5.3.2. Unix: Make the command line launch script executable

Optional but recommended. Copy the file "interscript/bin/iscr.py" to someplace on you execution path, renaming it "iscr" and making it executable. For example, I use:
  cp /usr/local/lib/python1.5/site-packages/interscript/bin/iscr.py ~/bin/iscr
  chmod a+x iscr
You may need to edit the first line of this script, which is
  #!/usr/bin/env python