and the online thing...the lessons are online dont do a very good job at teaching anything and our like old...
also i dont think my a+ teacher will understand either. as many of the teachers in my high school are highly incompetent. especially my english teacher, which is why hawaii has provides one of the lowest education levels? of all the education systems in the nation. too much sun bakes our brains. lmao.
i have read the xwindows system at wikipedia but i am confused.
i know xfree86 is an example of an x server. however, in the lessons, it mentions the x server and x windows system as 2 different elements. and it also mentions window manager. now i believe that x window system is what it is referring to as "x server" and that xfree86 is an open source x window system and a window manager is also part of the "x window package"
oh my...i am so confused.
i kind of understand what a package manager is. the lessons dont even give a definition of it but i think i understand. all it mentions is that they "used to install and remove applications and programs in Linux systems after the installation process has completed"is this correct?
also wikipedia is not that reputable...
can some1 plz like explain the relationship between x server, x window system, xfree86, and window manager. or are they all the same? the lessons are made by cisco and i dont really want to bad mouth them but they really suk. i dont think that by taking their course that u can become a+ certified. they make references to many things which they have not provided a foundation for. clearly if i am not interested in computers, i would be like others in my class who would just plagarize the entire thing into their powerpoint then when presenting to the class would just talk bs and no one would understand what the heck they would be talking about.
unless someone is a linux expert, they probably would not understand a thing of what the lessons say. i just want to understand the basics enough to be able to answer questions and also for my own personal knowledge.
here is an excerpt of one lesson:
"Environmental Variables contain information about the computer system that programs use to get a status report on the current condition of the computer. The Environmental Variables in a Linux system contain information such as the user?s home directory, disk space, hostname, the name of the current shell, or just to find out what resources are available on the system. Programs that are installed contain some of their own environmental variables that are used to tell where their configuration files are located or how to display information.
Common Linux Environmental Variables
There are many different types of environmental variables that can be set for a Linux system. To see a list of all the ones that are currently set, type the env command at the prompt. The output of this command is displayed in Figure
. Some of the variables are as follows:
* PATH ? This is one of the most important environmental variables that is on a Linux system. This variable contains a list of directories that the system will search for executable programs when they are entered at the command prompt.
* TERM ? This variable represents the current terminal type. The TERM variable contains information that allows a Linux system to know what commands the terminal supports.
* DISPLAY ? This is the variable that will identify the display used by The X Window system.
* PWD ? Displays the current working directory.
* USER ? This is a variable that is maintained by the system that allows it to know what user is logged on.
* HOSTNAME ? This is used to display the current TCP/IP hostname of the computer.
* LD_LIBRARY_PATH ? Libraries were covered previously in this chapter. This is the variable that some programs use to indicate the directories in which the libraries can be found.
* PS1 ? This variable represents the default prompt for the bash shell. It is used to identify the bash shell from other shells that might be running on the system."
now tell me if u can understand that.
thnx for the reply but could u plz clarify for me as i am totally dumbfounded.
tom
These are only a few of the many environmental profiles that can be set on a Linux system. However, these are the most important ones and the ones that will be used most often. Sometimes a program that is installed after the installation of the operating system will require certain environmental variables to be set. In this case, set them in /etc/profile/ or in any user configuration files that the program can access. "