linux command line and shell scripting bible ebook free download

Ngày tải lên: 29/03/2014, 19:20

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Ngày tải lên: 20/11/2013, 21:24

... 1 Starting Linux Command- Line Administration T o unleash the full power of Linux, as a Linux administrator you will spend most of your time typing commands on the Linux command line, the so-called shell ... OF ITS most important and most useful features. Commands, Options, and Arguments A Linux command normally consists of three parts: the command itself, the command options, and its arguments. For ... source code of the command. /PTIONS ARE VERY SPECIFIC TO THE COMMAND YOU USE 3OME COMMANDS DONT HAVE ANY OPTIONS and other commands can have more than 50. The i]j command normally gives you...

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Ngày tải lên: 31/03/2014, 17:20

Ngày tải lên: 03/07/2014, 16:10

... interactive)  Commands : read select The Saigon CTT  The Linux Shell The Linux Shell  Shells : Bourne (sh), Bourne Again (bash), Korn (ksh), C shell (csh, tcsh)  Programs start from command line ... Objectives Objectives  Identify differrent Linux shell environments  Understand the redirection of input  Understand and utilize command substitution  Write and configure BASH script using variables, ... while while and and until until loop loop  Syntax : while <condition> do #list of commands to do done until <condition> do #list of commands to do done The Saigon CTT  Shell...

Ngày tải lên: 24/06/2013, 01:25

... this command uses the value of the LOGNAME variable for the echo com- mand, and sets the value of username to the value of LOGNAME. 32 CHAPTER 5 ■ ACCEPTING COMMAND- LINE OPTIONS, SWITCHES, AND ... starts this line is a valid shell command that performs no active task. In this syntax it simply expands any arguments that may follow it on the line. In this case we simply want to expand the ... another switch, and perform a netstat -a with yet another. This is much like creating a set of command- line aliases to save time by reducing keystrokes for commonly used commands and utilities. Most...

Ngày tải lên: 05/10/2013, 08:51

... available in both shells, that increases your efficiency at the com- mand line is command and file completion. With this feature, you can start to type a path or command, and once you’ve typed ... Pressing Enter then executes the command. 100 CHAPTER 15 ■ COMMAND- LINE EDITING AND HISTORY When you enter command mode you start at the bottom of your history and press the K key to move back ... history list. Once you have found the desired command, you can make any appropriate modifications and press Enter to run the command. One last command- history function that has been extremely...

Ngày tải lên: 05/10/2013, 08:51

... (mistyped) command in your history and then edit the command sequence using vi-style command- line editing. You can also recall a previously entered miniscript for easy modification and reuse. 1. ... by using a command call within back-ticks (` `). A command string enclosed within back-ticks denotes not the given string, but the string obtained by evaluating the command string and replacing ... and reuse. 1. To read a file line- by -line where the lines contain more than a single “word,” refer to Chapter 10. 104 CHAPTER 16 ■ SCRIPTING FROM THE COMMAND LINE concurrent package installation...

Ngày tải lên: 05/10/2013, 08:51

... (signal Chapter 10. FreeBSD and Command Line Tools FreeBSD is the bedrock of the FreeNAS server. In this chapter, we will look at some simple FreeBSD commands and also some fundamental FreeBSD administration ... way to get to the FreeBSD command line is via the FreeNAS console menu. With FreeNAS up and running, go to the FreeNAS machine and press ENTER to make the splash screen disappear and the console ... here. Using ping and arp from the Command Line In chapter 9, we looked at the ping and arp commands. These are available from the web interface but they are also available from the command line. To ping...

Ngày tải lên: 19/10/2013, 01:20

... 2 command line argument -a and /* is another. For shell script, $ myshell foo bar Shell Script name i.e. myshell First command line argument passed to myshell i.e. foo Second command line argument ... of 5) [17/08/2001 17.42.02] Shell Arithmetic❍ Command Line Processing (Command Line Arguments)❍ Why Command Line arguments required❍ Exit Status❍ Filename Shorthand or meta Characters (i.e. ... Programming Commands echo command Decision making in shell script ( i.e. if command) ❍ test command or [ expr ]❍ Loop in shell scripts❍ The case Statement❍ The read Statement❍ ● More Advanced Shell...

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Ngày tải lên: 26/10/2014, 21:49

... Understand and create Linux BSP for a hardware platform. Ⅲ Understand the Linux model for embedded storage and write drivers and applications for the same. Ⅲ Understand various embedded Linux drivers ... creation, and shared libraries in uClinux is given. The final section explains XIP and how to port applications from standard Linux to uClinux. It also explains how to build applications for uClinux. Appendix ... embedded Linux environment. Some of the common problems are: Ⅲ Understand the embedded Linux development model. Ⅲ Write, debug, and profile applications and drivers in embedded Linux. Ⅲ Understand...

Ngày tải lên: 04/08/2012, 14:23

... left square bracket ([) is both a command internal to the shell and a system command (/usr/bin/[) that can be thought of the same as the test command. The [ command has specific syntax that must ... arguments that were supplied to the command, including variables and their values. Each line of output will be CHAPTER 5 ■ ACCEPTING COMMAND- LINE OPTIONS, SWITCHES, AND PARAMETERS 33 DATE=`date ... entering the source command at the shell prompt, as shown here. This command evaluates the commands in a file, which in the case of our library places its resources inside the current shell environment....

Ngày tải lên: 20/08/2012, 13:59