CODEWITHSUNDEEP
shellterminal
unwise guy
unwise guy

Reputation: 1128

Why is permission needed when running a script a different way?

I have a python script that when I run in terminal:

py filename.py

That works fine. But with this style:

./filename.py

I get Permission denied error. Any idea why? Thanks in advance.

Upvotes: 2

Views: 69

Answers (4)

Dan
Dan

Reputation: 660

When you do ./filename.py it executes the script.

When you do py filename.py the py program reads in your filename.py and runs.

Upvotes: 2

Jason Owen
Jason Owen

Reputation: 7630

Your file needs to be marked as executable. You can see how its current permissions with ls(1) and change its permissions with chmod(1):

ls -l filename.py
chmod a+x filename.py

You will also need to make sure that the first line of your script has the hashbang correctly:

#!/usr/bin/py
# the rest of your script...

Upvotes: 3

Adam Sznajder
Adam Sznajder

Reputation: 9216

You have three types of permissions in posix compiliant systems: read, write and execute. You simply don't have rights to execute the script. In order to add permissions you have to call something like:

chmod +x filename.py

You have to remember that ./filename.py won't execute your Python script even if you will add execution rights (if you don't have #!/usr/bin/py at the beginning). Python scripts need to be executed in an interpreter - not as a standalone application.

Upvotes: 1

Gjordis
Gjordis

Reputation: 2550

My guess is that python itself has -x (executable) rights, but filename.py does not

Upvotes: 3

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