Go to the console application and write: echo $SHELL
You will get something similar:
/usr/local/bin/tcsh (Improved version of C Shell)
/bin/bash (Bourne-again shell)
You access Unix the same or similar way that you access any other Operating System; you provide a username and a password and log in. From there, you use the shell interpreter to tell it what to do (in a similar way from Windows, for example).
Most people set up their shell to give them an indication in the command prompt. But this isn't "built in" (the mechanism for doing so is built in to most shells, but you can use the same mechanism to change the prompt to pretty much anything you want).The command pwd on a Unix system should tell you "where you are".
There are many ways to do this, but the fastest and easiest is to use the 'uptime' command, which will tell you in a summary line how many users are logged in.
you can tell by how many stripes they have on there shell
How can you tell what????
This unenlightened question is found on many A+ certification exams, First, I will tell you the that they want. Then I will tell you why there is no correct . The that they want you to write in is "Linux." This is in spite of the fact that Linux scales even higher than Unix and has more features, thereby making most Unix implementations the "scaled-down" operating system. In order for something to be legally called a "version of Unix", it must undergo a rigorous certification process. No Linux distro has ever undergone this process, and so cannot be called a "version" of Unix. So then you would have to look at what certified Unix systems are commonly used in the server market. The only certified Unix systems still commonly used on the server market are Solaris 10, AIX and Mac OS X. All three of these systems scale very highly, which makes them unsuitable as an .
Linux is far more common these days than traditional Unix. But as any old system administrator will tell you, learn to learn, don't learn the system. There are numerous differences between the different Linux distros, differences between Linux and Unix, and differences between each of the Unices. Learning everything about each system is a daunting task, and probably near impossible. Rather than, say, learning all of the different command line switches for "ls" on each system, just know how to access a man page.
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how can you tell the difference between a tortoise and a turtle by shell in picture
The 'uptime' command will tell you exactly how many users are on the system. There are other variations of this, including counting the number of words from the 'users' command, etc., but this is the easiest.
you can tell by it shell
They will be bigger with more spots on the shell. Usually you can tell just by looking at it.