bash shell scripting examples pdf
Tài liệu Linux Shell Scripting Cookbook pdf
Ngày tải lên :
21/02/2014, 19:20
... of commands (run commands) are read
from a shell script called .bashrc, which is located in the home directory of the user (~/.
bashrc
). The bash shell also maintains a history of commands run ... the shell
Arithmetic operations are an essential requirement for every programming language. The
Bash shell comes with a variety of methods for arithmetic operations.
Getting ready
The Bash shell ... ass_array=([index1]=val1 [index2]=val2)
www.it-ebooks.info
www.it-ebooks.info
Shell Something Out
16
For example:
$ echo $SHELL
/bin /bash
$ echo $0
bash
Check for super user
UID is an important environment variable...
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Tài liệu Pro Bash Programming: Scripting the GNU/Linux Shell doc
Ngày tải lên :
17/02/2014, 17:20
... 205
BASH_ ARGC 205
BASH_ ARGV 205
BASH_ CMDS 206
BASH_ COMMAND 206
BASH_ EXECUTION_STRING 206
BASH_ LINENO 206
BASH_ REMATCH 206
BASH_ SOURCE 206
BASH_ SUBSHELL 206
BASH_ VERSINFO 207
BASH_ VERSION ... books about shell scripting. His
first book, Shell Scripting Recipes: A Problem-Solution Approach, was published by
Apress in 2005.
Introduced to Unix in 1990, Chris learned shell scripting ... 216
SHELL 217
TIMEFORMAT 217
TMOUT 217
TMPDIR 217
auto_resume 217
histchars 218
■Index 221
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■ CONTENTS
xiii
■Appendix: Shell Variables 205
BASH 205
BASHPID 205
BASH_ ALIASES...
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Expert Shell Scripting
Ngày tải lên :
20/08/2012, 13:59
... I want to present a diverse set
of examples that demonstrate the many uses of the test shell programming structure.
The Basics of Comparisons
In UNIX shell scripting there are both internal operators ... "Neither can I; I'm just an example shell script"
fi
Neither can I; I'm just an example shell script
The verbose (-v) option to the shell is more useful if you simply want to ... 4
CHAPTER 1
■
SHELL SCRIPT DEBUGGING
preceded by a plus-sign (+) prompt to designate it as part of the trace output. Traced
commands from the running shell that are being executed in a subshell are...
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Tài liệu Learning DebianGNU Linux-Chapter 13. Conquering the BASH Shell pptx
Ngày tải lên :
14/12/2013, 13:15
... popular Unix shells, as shown in Table 13.1. The
most popular Linux shell is the BASH shell (the "Bourne Again SHell& quot;),
based on the original Unix Bourne shell. The BASH shell is largely ... language.
Korn
shell
/bin/ksh The third Unix shell, added many of the features of
the C shell to the original Bourne shell.
Z shell /bin/zsh A feature-packed shell based on the Korn shell.
13.1.2 ... AT&T's System V
Unix.
BASH
shell
/bin /bash
/bin /bash2
The standard shell for Linux, based on the original
Unix Bourne shell. According to its man page,
BASH is "ultimately intended"...
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Tài liệu Components: A Scripting Primer pdf
Ngày tải lên :
14/12/2013, 22:15
... interactive application, requiring relatively little
scripting to make it work.
< Day Day Up >
< Day Day Up >
Components: A Scripting Primer
Because the focus of this book ... discussion in this lesson largely
centers on how to work with and use Flash components from a scripting standpoint. For a
more thorough overview of components, consult the documentation that...
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Tài liệu Linux Shell Scripting Tutorial Ver.1.0 docx
Ngày tải lên :
24/01/2014, 02:20
... 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 passed to myshell i.e. bar
In shell ... popular shells
(In MS-DOS, Shell name is COMMAND.COM which is also used for same purpose,
but it's not as powerful as our Linux Shells are!)
Shell Name Developed by Where Remark
BASH ( Bourne-Again
SHell ... Bourne-Again
SHell )
Brian Fox and Chet
Ramey
Free Software
Foundation
Most common shell in
Linux. It's Freeware
shell.
CSH (C SHell) Bill Joy
University of California
(For BSD)
The C shell& apos;s...
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Classic shell scripting
Ngày tải lên :
19/03/2014, 13:32
... the
Unix tools, together with the standard shell, to get your job done. This is the art of
shell scripting. Shell scripting requires not just a knowledge of the shell language, but
also a knowledge ... problem. Examples of scripting languages
include
awk, Perl, Python, Ruby, and the shell.
Because the shell is universal among Unix systems, and because the language is stan-
dardized by POSIX, shell ... been doing shell scripting for 30 years?!? Well, now that I think
about it, I suppose I have, although it was only in a small way at first. (The early
Unix shells, before the Bourne shell, were...
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Learning the bash shell - unix shell programming
Ngày tải lên :
19/03/2014, 13:38
... way.
Appendix A compares bash to several similar shells,
including the standard Bourne shell, the POSIX shell
standard, the Korn shell (ksh), the public-domain Korn
shell (pdksh), and the Z Shell (zsh).
Appendix ... -u
You should see a response that looks like /bin /bash or
/usr/local/bin /bash.
To install bash as your login shell, type chsh bash- name,
where bash- name is the response you got to your whereis
command ... programmable
completion.
23
1.1. What Is a Shell?
1.2. Scope of This Book
1.3. History of UNIX Shells
1.3.1. The Bourne Again Shell
1.3.2. Features of bash
1.4. Getting bash
1.5. Interactive Shell Use
1.5.1. Commands,...
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Linux command line & shell scripting bible
Ngày tải lên :
19/03/2014, 13:39
... Command Line
Chapter 1: Starting with Linux Shells 3
Chapter 2: Getting to the Shell 25
Chapter 3: Basic bash Shell Commands 59
Chapter 4: More bash Shell Commands 91
Chapter 5: Using Linux Environment ... 609
Chapter23:ThezshShell 611
History of the zsh Shell 611
Parts of the zsh Shell 612
Shell options 612
The zsh shell files 615
Environment variables 619
Built-in commands 6 25
Scripting with zsh ... Line
TABLE 1-2
Linux Shells
Shell Description
ash A simple, lightweight shell that runs in low-memory environments but has full
compatibility with the bash shell
korn A programming shell compatible...
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Economic benefits of standardization Summary of results Final report and practical examples pdf
Ngày tải lên :
23/03/2014, 20:20
... technology 34
Export strategy of
businesses: Conform-
ing to European and
International Stand-
ards
Examples Page
– Masonry units 34
– Construction products 32
80 % of the businesses
surveyed do not ... standardization: Results of the company survey and
interviews with experts (with references to examples) 8
Technical University Dresden, Faculty of Economics and Business Management
Prof. Dr. ... those
of the company survey 26
Conclusion by the participating research institutes 30
Practical examples Dr Ing. Bernd Hartlieb (DIN) 31
Page 20 Economic benefits of standardization: Summary
Part...
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Shell Scripting potx
Ngày tải lên :
29/03/2014, 10:20
... /etc /bash. bashrc (if a
bash shell) ,
~/.profile, and finally ~/.bashrc are executed in that order. ~/.profile is read by
all shells so it is best to put generic settings in there, and then bash- specific ... the same way.
login _shell
— This is set if the current shell is a login shell; it is read-only.
SHELLOPTS
SHELLOPTS is similar to BASHOPTS; it is a list of
-o
options set. So if you
set ... usefully in your
~/.bashrc file.
PS1 Prompt
PS1 is the basic shell prompt; you can customize this. The default for bash is \s-\v\$, or shell-
version-dollar” — for example,
bash- 4.1$. Numerous...
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Linux Command Line and Shell Scripting Bible 2nd edition potx
Ngày tải lên :
29/03/2014, 19:20
... Alternative Shells
What Is the dash Shell?
The dash Shell Features
Scripting in dash
The zsh Shell
Parts of the zsh Shell
Scripting with zsh
Summary
Part IV: Advanced Shell Scripting Topics ... current user
\v Version of the bash shell
\V Release level of the bash shell
\w Current working directory
\W Basename of the current working directory
\! Bash shell history number of this command
\# ...
This new shell prompt now shows the current time, along with the username. The new PS1 definition only lasts for the
duration of the shell session. When you start a new shell, the default shell...
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Theory-W Software Project Management: Principles and Examples pdf
Ngày tải lên :
29/03/2014, 23:20
... plan; identify and manage your risks)
did a good job
on both counts. The case study and the other examples
provided earlier also indicate that Theory W does a rea-
sonably good job in satisfying ... others do unto you.” But, oth-
ers may not want what you want as win conditions. Some
frequent examples:
l
Managers frequently assume that software profes-
sionals win by getting “promoted” ... SOFTWARE ENGINEERING. VOL. 15, NO. 7, JULY 1989
Theory-W Software Project Management: Principles
and Examples
BARRY W. BOEHM,
SENIOR MEMBER, IEEE, AND
RONY ROSS
Abstract-A good software project...
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Báo cáo khoa học: "ELABORATION IN OBJECT DESCRIFFIONS THROUGH EXAMPLES" pdf
Ngày tải lên :
31/03/2014, 06:20
... plan to study are the differ-
ences between opportunistic generation of examples
and top-down planning of text with examples, and the
effects arising from differences in the knowledge type, ...
Abstract
Examples are often used along with textual descrip-
tions
to
help convey particular ideas - especially in
instructional or explanatory contexts. These accompa-
nying examples reflect ...
examples replace possible (textual) elaborations in the
description. It is thus clear that if object descriptions
are to be generated, the system must incorporate strate-
gies to handle examples. ...
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