bash shell scripting pdf download
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
www.it-ebooks.info
■ CONTENTS
xiii
■Appendix: Shell Variables 205
BASH 205
BASHPID 205
BASH_ ALIASES...
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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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linux shell scripting with bash 2004
Ngày tải lên :
24/04/2014, 09:16
... successors were csh, a shell loosely based on the C language,
and the Korn shell (ksh), an improved Bourne shell developed by David G. Korn. Shell
designers incorporated commands into the shell for better ... 20
Chapter 2 Operating the Shell
Bash keeps the command history in a file called .bash_ history unless a variable
called HISTFILE is defined. Each time you quit a Bash session, Bash saves the history ... to be
built into the shell wasn’t. Even arithmetic was performed by other programs outside of
the shell. This slowed the shell, but speed was not an important factor when the shell
spent most of...
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Expert Shell Scripting
Ngày tải lên :
20/08/2012, 13:59
... 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 that allow you to ... "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 Cơ bản về Linux Shell Script pdf
Ngày tải lên :
15/12/2013, 20:15
... phổ biến, đó là:
- Bourne shell, đợc coi là shell chuẩn, cô đọng và là loại đơn giản nhất.
- Korn shell, cao cấp hơn Bourne shell và cho phép soạn dòng lệnh.
- C shell, sử dụng cú pháp của ... VÝ dô chuyÓn tõ Bourne shell sang C shell:
exec csh
hoặc có thể đổi shell mới bằng lệnh:
chsh [<tên shell& gt;]
Cấu trúc lệnh chsh nh sau:
chsh [-s <tên shell& gt;] [ -l ] [<tên ... có ít nhất là một loại shell và thông thờng Bourne shell đợc sử
dụng để viết shell script, còn sử dụng một loại khác cho việc tơng tác.
Tệp /etc/passwd sẽ xác định loại shell nào sẽ đợc sử dụng...
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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 ... 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 ... 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...
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Tài liệu bash Quick Reference pdf
Ngày tải lên :
20/02/2014, 11:20
... time a subshell or
subshell environment is created.
BASH_ VERSINFO[0] The major version number, or release, of Bash.
BASH_ VERSINFO[1] The minor version number, or version, of Bash.
BASH_ VERSINFO[2] ... 2>no_access
Syntax 9
CHAPTER 1
The Bash Shell
This reference covers Bash, which is the primary shell for GNU/Linux and Mac OS X. In
par ticular, it cov ers version 3.1 of Bash. Bash is available for Solaris ... facilities
• An arithmetic for loop
Invoking the Shell
The command interpreter for the Bash shell (bash) can be invoked as follows:
bash [
options
][
arguments
]
Bash can execute commands from a terminal,...
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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 ... [6.2.4]), which is heavily
used in shell scripting, and I/O commands such as
echo or printf.
ã Shell functions are self-contained chunks of code, written in the shell language,
that are invoked ... 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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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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mastering unix shell scripting, 2nd edition
Ngày tải lên :
24/04/2014, 15:31
... Bourne shell
#!/bin/ksh or #!/usr/bin/ksh Declares a Korn shell
#!/bin/csh or #!/usr/bin/csh Declares a C shell
#!/bin /Bash or #!/usr/bin /Bash Declares a Bourne-Again (Bash) shell
Declare the Shell ... exist.
Running a Shell Script
A shell script can be executed in the following ways:
ksh shell_ script_name
will create a Korn shell and exe cute the shell_ script_name in the newly created
Korn shell environment. ... the shell script. If no shell is declared on the first line of
the shell script, it will execute in the default shell, which is the user’s system-defined
shell. Executing in an unintended shell...
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