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

Offline File Storage Commands

The tar Command

The tar command archives the tape file. It saves and restores files onto magnetic tape. Its function is controlled by its first argument called the key argument.

Synopsis :

$ tar -key [f device_file] [file. . .]

Example :

Create an archive:
$ tar –cv f /dev/rmt/0m myfile
Get a table of contents from the archive :
$ tar -tv f /dev/rmt/0m
Extract a file from the archive :
$ tar –xv f /dev/rmt/0m myfile

The nohup Command

the nohup command to make commands immune to hanging up and logging off. The nohup command is one of a group of commands which precede another command.

Synopsis :

nohup command line &

Example :

nohup cat * > bigfile &
c A new archive is created.
x Files are extracted from the archive.
t A table of contents of the archive is printed.
r Files are added to the end of the archive.
u Files are added to the archive if they are new or modified.
v Echoes filenames to screen as they are archived or restored - verbose.

The cpio Command

This command makes archive copies of files and directories in HP-UX. cpio stands for copy input to output.
cpio has two modes:
-o Make a backup. Read standard input, and copy each file to standard output.
-i Restore a backup. Read standard input for the backup data, and recreate it on the disk.
When creating backups, the cpio -o command uses standard input as its source of file names and standard output as the archive output.
When restoring an archive, the cpio -i command will read the archive from standard input (the tape special device file) and restore the file contents to your disk.
cpio -o[cvx] Generate an archive.
cpio -i[cdmtuvx] Restore from an archive.

Example :

Create an archive of all files under current directory :
$ find | cpio -ocv /dev/rmt/0m
Restore all files from an archive :
$ cpio -icdmv < /dev/rmt/0m

Basic Linux Tutorial

Offline File Storage Commands