Browsing Linux
Accessing a Unix System
Section 2: Accessing a UNIX System
There are many ways that you can access a UNIX system.
Logging In and Out with Unix
To ensure security and organization on a system with many users, UNIX machines employ a system of user accounts.
The Unix Shell
Section 4: The UNIX Shell
The shell is perhaps the most important program on the UNIX system,
from the end-user's standpoint.
Working with Files and Directories in Unix
Section 5: Working with Files and Directories
Here is an index to the topics in this section:
The UNIX filesystem structure
File and directory permissions
Changing directories
Listing the contents of a directory
Viewing the contents of a file
Copying files and directories
Moving and renaming files
Removing files
Creating a directory
Removing a directory
The UNIX filesystem structure
All the stored information on a UNIX computer is kept in a
filesystem.
Redirecting Input and Output in Unix
Section 6: Redirecting Input and Output
CONCEPT: Every program you run from the shell opens three files:
Standard input, standard output, and standard error.
Pipelines and Filters in Unix
UNIX allows you to connect processes, by letting the standard output of one process feed into the standard input of another process.
Unix Process Control and Multitasking
Section 8: Process Control and Multitasking
CONCEPT: The UNIX kernel can keep track of many processes at
once, dividing its time between the jobs submitted to it.