Running a UNIX command via python script

Question

I have to execute this following command

exec /dir6/dir5/dir4/openssl enc -d -aes-256-cbc -a -in /home/dir2/dir3/XXX.enc -pass pass:password

from my python Script. I have used

subprocess.call(["exec"," /dir6/dir5/dir4/openssl","enc","-d","-aes-256-cbc","-a","-in","/home/dir2/dir3/XXX.enc","-pass", "pass:password"])

but it doesn't work.

Can anyone help me on this. Thanks in advance.

It gives me the below mentioned error as before: File "/usr/lib64/python2.6/subprocess.py", line 478, in call p = Popen(*popenargs, **kwargs) File "/usr/lib64/python2.6/subprocess.py", line 642, in __init__ errread, errwrite) File "/usr/lib64/python2.6/subprocess.py", line 1234, in _execute_child raise child_exception OSError: [Errno 2] No such file or directory — Abhishake Gupta
– Abhishake Gupta, Commented Feb 25, 2015 at 15:11

Jean · Accepted Answer · 2015-02-25 14:51:45Z

1

you don't need "exec" here, and there is an unneeded space before /dir6 :

subprocess.call(['/dir6/dir5/dir4/openssl', 'enc', '-d', '-aes-256-cbc', '-a', '-in', '/home/dir2/dir3/XXX.enc' ,'-pass' , 'pass:password'])

I assumed that your command works, but I could not find the -pass option in the openssl manual.

edited Feb 25, 2015 at 14:51

answered Feb 25, 2015 at 14:42

Jean

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6 Comments

Abhishake Gupta Over a year ago

Thanks for the answer JBzh. Please see the error i just mentioned, hope u can help me more on this now.

Jean Over a year ago

did you removed the space in " /dir6/dir5/dir4/openssl" ? does the file /dir6/dir5/dir4/openssl exists ?

Abhishake Gupta Over a year ago

Yes i have tried after removing the space too. & yes the file exists as that command is executing in a tcl script already.

Jean Over a year ago

what is the output of this command if your execute it from your shell directly ? Not inside your python script and not from your TCL script, directly from the shell : /dir6/dir5/dir4/openssl . You removed 'exec' too, as stated in my answer ?

Abhishake Gupta Over a year ago

/dir6/dir5/dir4/openssl or exec /dir6/dir5/dir4/openssl Error: Command not found cd /dir6/dir5/dir4/openssl Error: No such file or directory

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