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I have a python program in that I wrote some python code (disk.py). I executed this program using the command python disk.py in a terminal, it worked.

Now I want to execute it using a shell script.

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1  
You mean executing like ./disk.py (wild guess)? If so, you just need to add a suitable hash-bang, i.e. #!/usr/bin/python. If you mean some else, you need to clarify what you are talking about. –  Faheem Mitha Mar 1 at 9:06
    
First, rewrite the program logic in Shell script. Or I'm confused! –  SparKot ॐ Mar 1 at 9:22

2 Answers 2

up vote 1 down vote accepted

To be able to execute as ./disk.py you need two things:

  1. Change the first line to this: #!/usr/bin/env python
  2. Make the script executable: chmod +x disk.py
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why we need to write like this #/usr/bin/env python. what's purpose for env python –  rajcoumar Mar 1 at 9:43
    
@rajcoumar it's more portable this way. In some systems python might be in /usr/bin/python, in others it might be /opt/bin/python. With #!/usr/bin/env python it should work in all systems where python is correctly installed, regardless of its exact location. –  janos Mar 1 at 10:18
    
Thanks for your great information @janos –  rajcoumar Mar 1 at 10:22
    
Isn't it python script rather than shell script ? –  SHW Mar 18 at 8:34
up vote 1 down vote

Shell script should be like:

#!/bin/sh
python disk.py
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