Your secret spy resident for Linux, web server and hardware

I love linux systems, but some aspects of using of this system and lack of appropriate tools will always make me irritated. One of the thing I always missing is the analog of Norton Commander (like in MS DOS). The good but definitely not the total alternative is Midnight commander. If ever used both products you definitely know how Midnight Commander (even latest 4.8.2) is very simplified in comparison with old Norton Commander 3.0 which is almost 12 years old (and I’m not talking about 5.5 version of NC).

So as you see the most advanced file manager for Linux console available still cannot perform such a simple task like show size of specified folder.

There are many separate Linux utills but I will bring the example which I like most. First change the folder you wish to check size for:

cd /yourfoldername

after type

du -h | tail -n 1

It will show the size of the folder including the files in sub-folders. See the screen shot below.

There are many ways to check Linux running processes. The “easy” ways: use small utilities like top or atop. The more powerful but more complex way to use internal linux ps command.

So to install either top or atop simply time this command. Be sure that these utilities already installed. For instance atop is usually not installed by default but supplies in most Linux distribution. In Debian for example.

Continue reading ‘How to list Linux running processes’ »

To add new user in Linux you should have permission to do so. If you are the root user, you can add users into your Linux system.

The command adduser: 

Continue reading ‘Simple user and password manage in Linux’ »

It is necessary from time to time check when you Linux server was restarted. It might be interesting for security reason, when somebody had access to your server and reboot it. Also it is useful to know how stable is your server, how often it was restarted, manually or independently due to hardware, kernel or software crash.

You the following command: last reboot

I will try to be short ad possible with sharing my knowledge and opinion about Apache. Pros and cons will be the best way,

Pros:

1. Popularity. Still number one Web server around internet
2. Well documented and mature product
3. Quite easy to install, easy to configure.
4. Almost all in one solution (build in support of PHP, CGI, PERL)
5. Present in all popular Linux distributions.
6. Compatible with major management systems: Webmin, Fantastico, Cpanel, ISP config. Part of Zend server.
Cons:
1. Technologically outdated
2. Not good for the single server for many concurrent connections
3. Consumes far more RAM than new generation web servers
4. MOD PHP is very slow solution for PHP requests handling