using variables in linux command line
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Tài liệu Beginning the Linux Command Line [Apress 2009] ppt
Ngày tải lên :
10/12/2013, 14:15
... 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...
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Linux command line & shell scripting bible
Ngày tải lên :
19/03/2014, 13:39
... 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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Báo cáo y học: "High level expression of apoptosis inhibitor in hepatoma cell line expressing Hepatitis
Ngày tải lên :
02/11/2012, 11:17
... 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,...
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Tiết dạy chuyên đề " Using games in English class"
Ngày tải lên :
29/09/2013, 14:10
... 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,...
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Accepting Command-Line Options, Switches, and Parameters
Ngày tải lên :
05/10/2013, 08:51
... "${username:?$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...
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Command-Line E-mail Attachments
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:...
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Command-Line Editing and History
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...
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Evaluating Variables in a Flat File
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...
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Scripting from the Command Line
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...
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The IDE - Eclipsing the Command Line
Ngày tải lên :
05/10/2013, 10:20
... 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...
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