# OSError: \[Errno 13\] Permission denied

**URL:** <https://ask.bioexcel.eu/t/oserror-errno-13-permission-denied/2548>\
**Category:** HADDOCK\
**Created:** [November 14, 2020, 10:50am UTC](https://ask.bioexcel.eu/t/oserror-errno-13-permission-denied/2548 "2020-11-14T10:50:34Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![wesley](https://avatars.discourse-cdn.com/v4/letter/w/eb9ed0/32.png) [@wesley](https://ask.bioexcel.eu/u/wesley)\
**Post date:** [November 14, 2020, 10:50am UTC](https://ask.bioexcel.eu/t/oserror-errno-13-permission-denied/2548/1 "2020-11-14T10:50:34Z")

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Dear developer and users:  
I have installed local HADDOCK2.4. After customizing the docking parameters, when I ‘haddock2.4’, it shows:  
Traceback (most recent call last):  
File “/public/home/wanglin3/software/HADDOCK/haddock2.4-2020-09/Haddock/RunHaddock.py”, line 370, in   
stderr=subprocess.PIPE)  
File “/usr/lib64/python2.6/subprocess.py”, line 642, in **init**  
errread, errwrite)  
File “/usr/lib64/python2.6/subprocess.py”, line 1238, in \_execute\_child  
raise child\_exception  
OSError: [Errno 13] Permission denied

Can anyone give me some suggestions? Thanks a lot !

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**Author:** ![honoratorv](https://dub1.discourse-cdn.com/flex013/user_avatar/ask.bioexcel.eu/honoratorv/32/672_2.png) [@honoratorv](https://ask.bioexcel.eu/u/honoratorv)\
**Post date:** [November 14, 2020, 11:59am UTC](https://ask.bioexcel.eu/t/oserror-errno-13-permission-denied/2548/2 "2020-11-14T11:59:15Z")

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This error is not related with Haddock but with your Linux environment, check if you have write permissions on the folders.

This link might be useful to you: [https://projects.ncsu.edu/hpc/Documents/unixtut/](https://projects.ncsu.edu/hpc/Documents/unixtut/)

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**Author:** ![amjjbonvin](https://dub1.discourse-cdn.com/flex013/user_avatar/ask.bioexcel.eu/amjjbonvin/32/23_2.png) [@amjjbonvin](https://ask.bioexcel.eu/u/amjjbonvin)\
**Post date:** [November 14, 2020, 2:33pm UTC](https://ask.bioexcel.eu/t/oserror-errno-13-permission-denied/2548/3 "2020-11-14T14:33:06Z")

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And to add to that, you might run into problems with python2.6

haddock does required python2.7

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**Author:** ![wesley](https://avatars.discourse-cdn.com/v4/letter/w/eb9ed0/32.png) [@wesley](https://ask.bioexcel.eu/u/wesley)\
**Post date:** [November 17, 2020, 8:54am UTC](https://ask.bioexcel.eu/t/oserror-errno-13-permission-denied/2548/4 "2020-11-17T08:54:09Z")

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Thank you!

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**Author:** ![wesley](https://avatars.discourse-cdn.com/v4/letter/w/eb9ed0/32.png) [@wesley](https://ask.bioexcel.eu/u/wesley)\
**Post date:** [November 17, 2020, 8:54am UTC](https://ask.bioexcel.eu/t/oserror-errno-13-permission-denied/2548/5 "2020-11-17T08:54:19Z")

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Thanks a lot!