Basic Linux Tutorial

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Introduction to Linux History of Linux Linux distributions Advantages of Linux Difference between Linux and Windows

» Linux File System » Root Directory » Bin Directory » Configuration Directories » Data Directories » Memory Directories » Unix System Resources

Basic Linux Commands Login Related Command User Login Related Commands General Orientation Commands

File Managing Commands Working with Directories Working with Files Working with File Contents Filter Commands

File Permission & Access Ownership of Linux files Permissions of Linux files Changing file permissions Absolute or Numeric Mode Symbolic Mode Changing Owners and Groups

Input & Output Redirection Standard Output Redirection Standard Input Redirection Standard Error Redirection

Piping The T-Junction I/O Redirection & Piping

Other Linux Commands ARPA Services Commands Berkeley Services Commands Process Control Command Offline file Storage

Vi Editor Modes Used in Vi Editor Starting and Stopping Vi Cursor Movement Inserting and Deleting Text Replacing Text Search and Replace Cut, Copy, and Paste Importing and Exporting Text Configuring Vi Options

Shell Scripting Variables Passing Data Through Environment Variables Special Shell Variables Command Line Arguments The shift Command The read Command The echo Command

Branching The test Command Testing Numeric & String Values Testing Files & Logical Operators The if then fi Structure The if then else fi Structure The case Structure

Loops The let command The while-do-done Loop The until-do-done Loop The for-do-done Loop

Unix System Resources

/usr

The /usr is pronounced like user, remember that it stands for Unix System Resources. The /usr hierarchy should contain shareable, read only data. Some people choose to mount /usr as read only. This can be done from its own partition or from a read only NFS share (NFS is discussed later).

/usr/bin

The /usr/bin directory contains a lot of commands.

/usr/include

The /usr/include directory contains general use include files for C.

/usr/lib

The /usr/lib directory contains libraries that are not directly executed by users or scripts.

/usr/local

The /usr/local directory can be used by an administrator to install software locally.

/usr/share

The /usr/share directory contains architecture independent data. As you can see, this is a fairly large directory.

/usr/src

The /usr/src directory is the recommended location for kernel source files.

Basic Linux Tutorial

Unix System Resources