[Tutor] cgi with system calls

[Nik]

no luck I'm afraid.

Also, to make it even more annoying, omitting the os call and going for

#!/usr/bin/python

import cgitb; cgitb.enable()

print "Content-type: text/plain\n\n"
import os

status =   """PID TTY          TIME CMD
 3649 pts0     00:00:00 su
 3652 pts0     00:00:00 bash
 5197 pts0     00:00:00 ps
"""
print status


works fine.

I've already half a dozen other scripts happily querying a database but 
this is the first one to have an error outside the usual brain fart stuff.

nik

Kent Johnson wrote:

> Nik wrote:
>
>> hi,
>>
>> I'm trying to write a python cgi script that can control certain 
>> processes on my server, but I'm having some trouble.
>> The script is;
>>
>> #!/usr/bin/python
>>
>> import cgitb; cgitb.enable()
>>
>> print "Content-type: text/plain\n\n"
>
>
> You may need explicit \r\n here, I'm not sure:
>
> print "Content-type: text/plain\r\n\r\n"
>
> Kent
>
>> import os
>> cmd = "/bin/ps"
>> status = os.system(cmd)
>> print status
>>
>> which seems straight forward, but I get a server error, and
>> malformed header from script. Bad header=  PID TTY          TIME CMD:
>> appears in the apache logs. The PID TTY etc indicates it's getting 
>> the ps response, but why won't it display (even with text/plain)?
>>
>> Ultimately I'll have the content type as html, and I'm going to 
>> preprocess the output of ps so it probably won't cause any problems, 
>> but I just don't understand why this isn't working in its simple form?
>>
>> btw, the final idea is to list the processes corresponding to a 
>> certain name, and allow users to stop them or create new ones. I'm 
>> assuming this should be do-able?
>>
>> nik
>> _______________________________________________
>> Tutor maillist  -  Tutor at python.org
>> http://mail.python.org/mailman/listinfo/tutor
>>
> _______________________________________________
> Tutor maillist  -  Tutor at python.org
> http://mail.python.org/mailman/listinfo/tutor
>