using variables in linux command line

Ngày tải lên: 20/11/2013, 21:24

... CHAPTER 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 ... xv Introduction xvii CHAPTER 1 Starting Linux Command- Line Administration 1 Linux Distributions 1 Linux History 1 Open Source 2 The First Distributions 2 Linux Turning Mainstream 2 Logging ... had in mind system administrators, software developers, and enthusiastic users who want to get things going from the Linux command line. For beginning users, this may be a daunting task, as Linux...

Ngày tải lên: 10/12/2013, 14:15

... Page iii Linux đ Command Line and Shell Scripting Bible Richard Blum Wiley Publishing, Inc. www.it-ebooks.info Blum fintro.tex V2 - 04/04/2008 4:51pm Page xxvii W elcome to Linux Command Line and ... have a Linux system running or are looking into getting a Linux system. Chapter 1, ‘‘Starting with Linux Shells,’’ describes the parts of a total Linux system and xxvii www.it-ebooks.info Blum ... what you are learning. This book is a fairly comprehensive resource on the Linux command line and shell commands. By the time you have completed Linux Command Line and Shell Scripting Bible, you...

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Ngày tải lên: 14/08/2014, 20:20

... persistently HBV expressing cell line HepG2.215 and its parent cell line, a non-HBV expressing cell line HepG2. We found that cIAP1 and cIAP2 were clearly increased in the HBV expressing cells but XIAP ... how these proteins contribute to the carcinogenesis is still in the investigation. The involvement of these proteins in the NF-kB related signal transduction pathway that results in the cell apoptosis ... and procaspase-7 by binding and blocking the activity of caspase-9. Increasing evidence demonstrated that IAPs are up regulated in many human tumor types and tumor cell lines [ 18, 32, 29, 39,...

Ngày tải lên: 02/11/2012, 11:17

Ngày tải lên: 13/09/2013, 09:23

... kites -Play soccer -Play badminton -Play tennis -Go swimming -Go jogging -Go camping -Go to the zoo -Go fishing What’s the weather like in the Spring ? Answer the questions ,using given picture : ... questions ,using given picture : Go swimming Back What’s the weather like in the Fall ? Answer the questions ,using given picture : Back What’s the weather like in the Winter ? Answer ... like in the Summer ? Answer the questions ,using given picture : Back What does your father do when it’s warm ? Answer the questions ,using given picture : Play tennis Back Cao Minh,...

Ngày tải lên: 29/09/2013, 14:10

... "${username:?$LOGNAME}" Changing the argument that follows the question mark to some type of error string will make this statement very useful in debugging and finding undefined variables in your code. The ... is a bit more elegant because it is con- tained within a single line of code instead of being spread out over four. The same test is performed against the variable, but the && (logical ... combinations of user-specified options using shell-script code that works with positional variables would be very problematic. This brings us to the getopts utility, which handles command- line...

Ngày tải lên: 05/10/2013, 08:51

... it, I copied the headers into the test message. I have preserved the line spacing of the copied message. Notice the line in the preceding code that defines a boundary string ( mime- attachment-boundary). ... {email_address}" Now we validate the input by determining whether the positional parameter holding the binary file is defined. if [ ! -z $1 ] then file=$1 CHAPTER 23 ■ COMMAND- LINE E-MAIL ATTACHMENTS 155 ■ Tip If ... obtain the original binary file. First we define a variable specifying the temporary file that will contain the encoded message as well as a variable that holds the script-usage string. #!/bin/sh tmpfile=/tmp/uu_output.$$ usage="Usage:...

Ngày tải lên: 05/10/2013, 08:51

... CHAPTER 15 ■ COMMAND- LINE EDITING AND HISTORY 101 ksh In ksh configuring vi editing mode can once again be set either systemwide or for an indi- vidual user. Modifying the systemwide /etc/profile ... matches, as you would in vi, until you find the command you’re looking for. I have been using this method to work at the prompt for a long time, and my fingers are accustomed to moving to the correct ... immensely when working at the command line. If you’re not comfortable with the vi edi- tor, I recommend practicing; vi is the default text editor on UNIX /Linux systems, and you’ll certainly have to...

Ngày tải lên: 05/10/2013, 08:51

... LOCKED ++ ++ IN $REMAINING day\\(s\\) ++ ============================================================== If the password isnt changed within $REMAINING day\\(s\\), account will be locked. Instructions ... and explain why she didn’t heed the friendly e-mail warnings. The canned template file looks like this: $ENVIRONMENT account password for \\"$USERID\\" expires in $REMAINING day\\(s\\) ============================================================== ... 181 ■ ■ ■ CHAPTER 26 Evaluating Variables in a Flat File O ne common scripting technique is to create a flat file that is one of a potential number...

Ngày tải lên: 05/10/2013, 08:51

... 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 ... you’re working with many lines at once), you can return to the previous (mistyped) command in your history and then edit the command sequence using vi-style command- line editing. You can also recall ... entered miniscript for easy modification 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...

Ngày tải lên: 05/10/2013, 08:51

... can develop from the command line using the same files. In fact you’re going to be doing that often in the coming chapters. Paying for More Functionality At this point, I’d suggest trying out Pydev ... the installation process by selecting Help ➤ Software Updates ➤ Find and Install. This br ings up the Install/Update window, shown in Figure 2-4. CHAPTER 2 ■ THE IDE: ECLIPSING THE COMMAND LINE ... you’ll learn how to use it both from the command line and from within Eclipse using the Subversive plug -in. CHAPTER 2 ■ THE IDE: ECLIPSING THE COMMAND LINE4 0 9810ch02.qxd 5/15/08 11:04 AM Page...

Ngày tải lên: 05/10/2013, 10:20