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is there any videos lectures here that could help me
Can you be more descriptive as to what you're missing?
well let me tell you that i missed the start i dont know what there talking about and for the moment they are studyi,g about commandes for example i dont understund the whole thing and i am obliged to do bunch of commandes and i hate to do something i dont understand "l -c etc/...." this kind of commandes i didnt complete i dont know how to interpret it can someone guide me please ! by the way this my first year i study engeneering science computer and i dont want to miss anything i like to find the good so i can achieve my goals !!!!!
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One command that you should immediately become familiar with is man. man displays the MANual page for the command that you give to man as an argument. Your first use should probably be:
yes its a very usefull commande i cant get enough from using it to understund all about the commandes and its options however i think i need more than that plzz dont hesitate to send me more information thank you
Most of the commands that you use in *nixes are programs. They're written to support the standard C language way of calling programs. In more practical terms, you'll usually call a program using the program name, options and then arguments.
Depending on the program, it can support two forms of options. The traditional way of writing options is a hyphen and then a letter, or several for the option[s]. In the last several years, full word options have become popular. These are usually preceded by a double hyphen.
The basic syntax of commands is:
program --option[s] argument[s]
In the case of ls, which lists a directory ( you can find more by doing: man ls ).
ls -a /
ls --all /
These two commands are equivalent. ls is the program name. a or all is an option that will show hidden files. / is an argument. / is the root directory, the root of the filesystem.
man pages, and the info subsystem are not ideal for learning. They're there for reference, usually not for tutorial.
man, file and more are three commands that you can use freely, on any file, as long as you're not root, without any problems.
Well,what you missed i think is the introduction to the Command line in Linux (shame you missed it,as it is quite fun !!!). You could start learning that from this book : http://www.wowebook.be/book/the-linux-command-line/
or from this website : http://linuxcommand.org/learning_the_shell.php
But for learning purposes,i would recommend you to install a linux distro inside a virtual machine,in order to protect you primary operating system,because you will need to be authenticated as root most of the time when you're learning and this is to keep you from frying your computer (just kidding !!! ). Seriously though ,use a virtual machine,which can be downloaded from here : https://www.virtualbox.org/wiki/Downloads
Another advice would be to take this step by step (that means you can't really be an expert in 2 days....).Learning the command line in Linux can be sometimes pretty tricky,but it is (in my opinion) one of the most powerful ways of interacting with the system !
Well,hope this helps,and if you didn't understood my answer or if it seemed ambiguous t you ,message me and i will do my best to help you ! Cheers !