From: Luckystr Luckystr <psixxx@...>
Date: 2009-08-18T05:46:54+09:00
Subject: Re: Can't execute shell commands in CGI

7stud -- wrote:
> Luckystr Luckystr wrote:
>> It is necessary to execute linux command in CGI(apache)
>> [code]def cmd(com)
>>  system("#{com}>log.log")
>> end
>> cmd("pwd")[/code]
>> There isn't errors but log.log is empty
>> Else:
>> [code]def cmd
>>  system("pwd>log.log")
>> end
>> cmd[/code]
>> there isn't result too.
> 
> 1) There aren't any code tags here.  You can just post your code and the 
> indenting will be preserved.
> 
> 2) Where is log.log located in your Apache directory structure?  The 
> correct path to that file needs to be specified in your cgi script.
> 
> 3) Check your apache error logs located here:
> 
> /logs/error_log
> 
> and see what the last few lines say.   It may say something like:
> 
> log.log: Permission denied
> 
> In that case, you'll need to change the permissions for log.log to give 
> 'others' write privileges, so that your script can write to log.log, 
> something like this:
> 
> $ sudo chmod o+w /full/path/to/log.log

errorlog:
sh: log.log: Permission denied

The path log.log can be correct since ">" creates a file if it does not 
exist.
But just in case, I checked path in script make access pattern 0777.
Outgoing from logfile, I think that there is error because user "apache" 
doesn't have shell.
I tried to make apache's shell by "adduser" by "root" but linux said 
that it's impossible.

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