Linux Information Security system design basics second week study summary

1.Terminal (terminal)

The Linux system also provides a program called Terminal Emulator (Terminal), the following several more common terminal simulators, such as Gnome-terminal,kconsole,xterm,rxvt,kvt,nxterm and Eterm, At present, the terminal program in our experiment is the xfce-terminal that comes with XFCE desktop environment. It is important to note, however, that there is a difference between the terminal (Terminal) and the console (consoles).

On the physical machine system you

[Tab]

Use the Tab key to complete the command, Tab key General keyboard is next to the letter Q , this technique brings you the greatest advantage is that when you forget the full name of a command, you can just enter the beginning of its part and then press the Tab key can be prompted or help to complete:

You can switch by using [Ctrl] + [Alt] + [F1]～[F6] , but you may not be able to switch in our online lab environment because the special function keys will be hijacked by your host system.

CTRL + C]

Think you have not encountered this situation, when you inadvertently entered a command in the Linux command, or the wrong use of a command, resulting in the terminal you can not expect, for example, only the cursor in the blink can not continue to enter the command, or constantly in the output of a lot of you do not want results. What should you do if you want to stop immediately and return to your controllable state? At this point you can use Ctrl+c the key to forcibly terminate the current program (you can rest assured that it does not cause the terminal to exit).

3). Learn to use wildcard characters

There may also be other parts of the content, but these parts are not standardized across manual pages. Common examples include options (option), exit status (Exit State), Environment (Environment), BUGS (Program Vulnerability), files (file), AUTHOR (author), REPORTING BUGS (known vulnerability), History and Copyright (copyrights).

There are usually a lot of things in the Man Handbook, you may not be easy to find the results you want, but fortunately you can use the search in man, /<你要搜索的关键字> and after finding you can use the key to switch to the next keyword where the n last keyword is located shift+n . Use Space (SPACEBAR) to page, Enter (enter) scroll down one line, or use j , k (Vim Editor's move key) to scroll backward one line forward. Press the h key to display the use Help (because man uses less as the reader, which is actually less the tool's Help), press q exit.

For more detailed help, you can also use info commands, but man it is often enough to use them. If you know the purpose of a command, just want to quickly see some of its specific parameters of the role, then you can use --help parameters, most of the commands will have this parameter, such as:

Linux Information Security system design basics second week study summary