Internal commands are stored in the; same level as the operating system while external commands are stored on the hard disk among the other utility programs.
List The Three Main Parts Of An Operating System Command
The three main parts are the command, options and arguments.
What Is The Difference Between An Argument And An Option (or Switch)?
An argument is what the command should act on: it could be a filename, directory or name. An option is specified when you want to request additional information over and above the basic information each command supplies.
What Is The Purpose Of Online Help?
Online help provides information on each operating system command, the syntax, the options, the arguments with descriptive information.
Name Two Forms Of Security.
Two forms of security are Passwords and File Security with permissions specified.
What Command Do You Type To Find Help About The Command Who?
$ man who
What Is The Difference Between Home Directory And Working Directory?
Home directory is the directory you begin at when you log into the system. Working directory can be anywhere on the system and it is where you are currently working.
Which Directory Is Closer To The Top Of The File System Tree, Parent Directory Or Current Directory?
The parent directory is above the current directory, so it is closer to the root or top of the file system.
What Are Two Subtle Differences In Using The More And The Pg Commands?
With the more command you display another screenful by pressing the spacebar, with pg you press the return key.
The more command returns you automatically to the UNIX shell when completed, while pg waits until you press return.
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When Is It Better To Use The More Command Rather Than Cat Command?
It is sometimes better to use the more command when you are viewing a file that will display over one screen.
How Many Vi Editor Modes Do You Know?
Three modes -
Command mode: letters or sequence of letters interactively command vi.
Insert mode: Text is inserted.
Command line mode: enter this mode by typing ":" and entry command line at the foot of the screen.
How Can You Terminate Vi Session?
Use command: ZZ that is save changes and quit.
Use command line: ":wq" that is write changes and quit.
Use command line: ":q!" to ignore changes and quit.
How Can You Copy Lines Into The Buffer In Command Mode?
yy - copy a single line defined by current cursor position
3yy - copy 3 lines. Current line and two lines below it.
We Saw The Mention On The Linux Bios Website About One Million Devices Shipped With Linux Bios. Could You Tell Us More About These Devices?
Yes, these are internet terminals that were built in India, based on the [x86 system-on-chip] STPC chip, I am told; also, there evidently is a Turkish-built digital TV that runs Linux BIOS. I have also heard that there are routers and many other embedded devices running Linux BIOS. I think at this point that 1 million is a low number. I am in contact with other set-top box vendors that are talking about numbers in the lOs of millions for their products. These numbers actually make the OLPC numbers seem small, which is in it amazing.
What's Your Goal For Your Talk At Fosdem?
I’d like to communicate the basic ideas — that Linux is a good BIOS, and why; why Linux BIOS is built the way it is; where we are going; and how people can help. Most importantly, why it all matters — and it really matters a lot. We’re on the verge of losing control of the systems we buy, and we need to make a conscious effort, as a community, to ensure this loss of control does not happen. That effort will not be without some sacrifice, but if we are to maintain our ability to use and program our machines, and have fun with them, we have to act now. Because, if the computing business stops being fun, what’s the point$
What Are Mysql Transactions?
A set of instructions/queries that should be executed or rolled back as a single atomic unit.
Explain Multi-version Concurrency Control In Mysql?
Each row has two additional columns associated with it - creation time and deletion time, but instead of storing timestamps, MySQL stores version numbers.
Name Two Methods You Could Use To Rename A File?
Two methods that could be used
a. use the mv command
b. copy the file and give it a new name and then remove the original file if no longer needed.
List All The Files Beginning With A?
To list all the files beginning with A command: ls A*
Which Of The Quoting Or Escape Characters Allows The Dollar Sign ($) To Retain Its Special Meaning?
The double quote (") allows the dollar sign ($) to retain its special meaning. Both the backslash (\) and single quote (') would remove the special meaning of the dollar sign.