linux's questions

I only want to show the content for myself, how do I configure the apache?

I'm using proxy to visit the site.

I can't do it with iptables for priviledge reasons..

[root@ test_project]$ touch test.txt
[root@ test_project]$ ll test.txt
-rw-rw-r-- 1 root root  0 2011-08-03 13:57 test.txt

Currently it seems to be 664,how can I change it to 700?

I used to do yum install xcodebuild ,but now getting this error:

You need to be root to perform this command.

How can I install it without the root privilege?

mod_perl provides a way to run perl scripts in httpd.conf:

<perl>
...scripts goes here...
</perl>

How do I configure httpd.conf so that scripts inside <perl></perl> only get run if there's a flag parameter in the querystring?

<Location /status>
    SetHandler server-status
    order deny,allow
    allow from all
</Location>

But when I visit http://ip:port/status,

a 404 Not Found is reported, why?

I'm now configuring Apache this way:

AddHandler cgi-script cgi pl

So that .pl will be interpreted as CGI script.

How can I make it run as mod_perl instead?

I want to set some environment only for a specific IP,how to do that in Apache?

in tmp I type a single character,but wc -c shows 2,why?

read /dev/urandom 3

The above is not working..How can I read random bytes from /dev/urandom in bash?

This is one entry of the output of who:

yang     pts/6        2011-06-22 09:25 (10.231.22.12)

Is there a way to send a message there?