Ref: Linux

MBA 683 E-Business Technology --

Syllabus Classes References Examples Student Info Guest Info

Linux References

The server we are using for this class is running Red Hat Linux. There are a few cases where you will have to connect to this server and use operating system commands. Here are the commands that you may need:

>> To be supplied.

Login

When you connect to the server you will get a login prompt like this:

Red Hat Linux release 6.1 (Cartman) Kernel 2.2.12-20 on an i586 login:

Enter your user name following the login prompt and press Enter.

You will be prompted for your password, enter it and press Enter. Note that both user names and passwords are case sensitive and must be entered exactly as assigned.

If you have logged in successfully you will see a shell prompt like this:

[user@ host / user]$

Logout: `exit`

You can logout when you done with the system by typing exit and pressing Enter.

Change password: `passwd`

You can change your password by typing passwd and pressing Enter. You will be prompted to enter you old password and then to enter your new password twice. The system will complain if it thinks your password is too easy to guess.

Change Directory: `cd` `[directory]`

The Change Directory command changes the current directory. When you first login you will be in your home directory. You can use the Change Directory command with these options:

	No directory name, (type cd followed by Enter) will change to your home directory.
	Hyphen (type cd - followed by Enter) goes to the previous directory.
	Dot Dot (type cd .. followed by Enter) changes to the parent directory (up one level).

List Files: `ls [-d] [-l] [-t] [-u]`

The List Files command displays the name and other information about files in the current directory. The following options may be used individually or in combinations:

	-d shows only subdirectories of the current directory
	-l displays a long listing of information including access permissions, size, owner, and last modification time.
	-t sorts the file listing by last modification time.
	-u sorts the file listing by last access time.

Interactive SQL: `sqlplus`

The SQLPlus command starts and Interactive SQL session with Oracle. You will be prompted for your user-name and password. Once you have logged in successfully you will see a message identifying the Oracle server and get a SQL Plus command prompt:

SQL>

When you have finished, logout from SQL by typing exit. For information on SQL Plus commands see Oracle Reference.

For More Information

For more information on Linux or other versions of UNIX, see:

	Learning Red Hat Linux by Bill McCarty, O'Reilly, 1999.
	RedHat.com http://www.redhat.com/
	Linux.com http://www.linux.com/

Linux References

Login

Logout: exit

Change password: passwd

Change Directory: cd [directory]

List Files: ls [-d] [-l] [-t] [-u]