setting environment variables in bash shell script

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 ... Administration Recipes Beginning Portable Shell Scripting Expert Shell Scripting Pro Bash Programming Beginning Perl 2nd Edition Beginning Ubuntu LTS Server Administration 2nd Edition trim ... 219972 5 34 9 9 Pro Bash Programming: Scripting the GNU/Linux Shell Dear Reader, The shell is a programming language! A shell script is as much a program as anything written in C, Python, or any...

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linux shell scripting with bash 2004

Ngày tải lên : 24/04/2014, 09:16

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Expert Shell Scripting

Ngày tải lên : 20/08/2012, 13:59

... $OSTYPE in "LINUX" ) PING=/usr/sbin/ping ;; "FREEBSD" ) PING=/sbin/ping ;; "SOLARIS" ) PING=/usr/sbin/ping ;; *) ;; esac } Using Your Library Once you’ve included ... quote your string variables to gracefully handle an undefined variable or white space within the string. A comparison involving an unquoted, undefined string variable in the bash shell will return ... included a library in your shell scripting environment, all functions it contains become available to your scripts. There are several ways to incorporate the library into the environment. You...

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environment pollution in the industriallzation

Ngày tải lên : 25/04/2013, 08:23

... 1. Ministry of Resources and Environment. Existing Vietnamese environment report from 2005-2009. 2. Pham Ngoc Dang, Le Trinh, Nguyen Quynh Huong. Assessment of environment event in main-point ... planning of waste matters - Planning of waste matters collection and treatment stations 3 In Vietnam, urban inundation is seriously in rain season, represent in Ha Noi City (because of rain ... resulting in intensive urbanization. Urban population in 1990 was only 19% of the total population, while the ratio has increased up to 29.6% in 2009, and, is being estimated to be 45% in the...

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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 ... refers to environment variables and contains customizable elements so the message can be tailored specifically to the recipient. In Chapter 36, I present a script that checks every morning for ... 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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Shell Script Debugging

Ngày tải lên : 05/10/2013, 08:51

... troubleshooting. Indenting them with the normal code makes them more difficult to find when I want them removed. CHAPTER 1 ■ SHELL SCRIPT DEBUGGING 9 If these three lines were executed in a script, ... 1 ■ SHELL SCRIPT DEBUGGING 7 valuable in tracing through the running of a script, it can be cumbersome to isolate the exact piece of data that you’re looking for. With an echo or print statement, ... displayed if the script were run without tracing enabled. As you can see, this type of trace is highly useful in determining the value that variables contain during the execution of a script, as...

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Tài liệu Learning DebianGNU Linux-Chapter 13. Conquering the BASH Shell pptx

Ngày tải lên : 14/12/2013, 13:15

... Common Linux Shells Shell name Program name(s) Description ASH shell /bin/ash /bin/bsh Resembles the shell used by AT&T's System V Unix. BASH shell /bin /bash /bin /bash2 ... preparing you for an in- depth, continuing study of Linux. 13.1 The Linux Shell You met the Linux command interpreter, or shell, early in this book. Like an MS-DOS Prompt window, the shell ... powerful BASH shell, providing a much more detailed explanation than that provided in Chapter 4, Issuing Linux Commands. The chapter also briefly explains shell variables, shell scripts, and shell...

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Tài liệu Cơ bản về Linux Shell Script pdf

Ngày tải lên : 15/12/2013, 20:15

... tin về loại shell nào đợc sử dụng. Mỗi khi bạn login, hệ thống sẽ đọc tệp này để lấy thông tin khởi tạo cho shell. Thông tin có thể gồm một trong những dạng sau: /bin/sh Bourne shell /bin/jsh ... hiện nay Linux là một hệ điều hành kế thừa của Unix. Linux cũng có những shell tơng tự và bạn có thể sử dụng những giới thiệu về shell ở đây với các hệ thống Linux. 3. Những loại shell hiện ... /bin/sh Bourne shell /bin/jsh Bourne shell, có thêm phần điều khiển tác vụ (job control) /bin/ksh Korn shell /bin/csh C shell Bạn có thể thay đổi shell mặc định sang một loại khác bằng...

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Tài liệu Cơ bản về Linux Shell Script ppt

Ngày tải lên : 16/12/2013, 13:15

... tin về loại shell nào đợc sử dụng. Mỗi khi bạn login, hệ thống sẽ đọc tệp này để lấy thông tin khởi tạo cho shell. Thông tin có thể gồm một trong những dạng sau: /bin/sh Bourne shell /bin/jsh ... hiện nay Linux là một hệ điều hành kế thừa của Unix. Linux cũng có những shell tơng tự và bạn có thể sử dụng những giới thiệu về shell ở đây với các hệ thống Linux. 3. Những loại shell hiện ... /bin/sh Bourne shell /bin/jsh Bourne shell, có thêm phần điều khiển tác vụ (job control) /bin/ksh Korn shell /bin/csh C shell Bạn có thể thay đổi shell mặc định sang một loại khác bằng...

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Tài liệu Bài 4: Shell script, hệ thống log, quản lý tiến trình, dịch vụ cron_Âu Bửu Long ppt

Ngày tải lên : 24/12/2013, 10:19

... P<#M//B  Q#0:##  K##0:R;<  N  K##% K##+%  K##K% Mng trong shell script ã Mng: ã Tp hp cỏc giỏ tr d liu c lu tr qua mt tờn chung ã Ging nh bin: khụng cn khai bỏo trc khi s dng ã c t ng to ra qua ... linux  q/D9BrSsH0@BAA:  LH0@BA/`M7  LH/heA:7  LG@?)H@7  LHtSBH777 Tỡm kim A. ã Tỡm mt file trong mt cõy ã Cu trỳc: find [path] [expression] ã Cỏc tựy chn: ã name ã -print ã type ã -mtime ã exec ã ok Dch v cron NbD<VtB}#TUSA;VW ~A:ã#H=#VWWl Vu0*FD<=>G 227/< 227/< 227B/< 227#/< LH=#S;./85eV=c@VT H#0HVtB}#h*`S;@9*9XH5 D<7 ... trình  LH-5A:V=coGD w<7 x yH5BCVTS;BCDH-5 x  x z=cBCDMCB//`SIBCVT x Le#{-5BHA:7 x < x z=cBCDMC x yE/r#/7 x /yE/rVu9* x 0//PBVv9*;8 Hệ thống log trong linux  q/D9BrSsH0@BAA:  LH0@BA/`M7  LH/heA:7  LG@?)H@7  LHtSBH777 ...

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Tài liệu Linux Shell Scripting Tutorial Ver.1.0 docx

Ngày tải lên : 24/01/2014, 02:20

... must be printed. Test your script as $ Q12 /bin $ Q12 /bin/* Answer: See Q12 shell Script Q.13. Write script to print contains of file from given line number to next given number of lines. For ... command line argument in our script. Lets take ls command $ ls -a /* This command has 2 command line argument -a and /* is another. For shell script, $ myshell foo bar Shell Script name i.e. myshell ... string2 string1 != string2 string1 is NOT equal to string2 string1 string1 is NOT NULL or not defined -n string1 string1 is NOT NULL and does exist -z string1 string1 is NULL and does exist Shell also test...

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Tài liệu Báo cáo khoa học: Exposure of IgG to an acidic environment results in molecular modiﬁcations and in enhanced protective activity in sepsis doc

Ngày tải lên : 16/02/2014, 15:20

... defense mechanisms. In addition to sepsis, there is an increasing number of emerging infectious diseases in which the severe gen- eralized in ammatory reaction of the infected host is a major factor in the ... buffer- exposed IVIg to recombinant human IFN-c. (D) Increased binding of low-pH buffer-exposed IVIg to human factor H. In both panels, binding of the native IVIg is indicated by a solid line, and that of ... the antigen-binding site and the involvement of hydropho- bic interactions as a driving force for the recognition of the target antigen. All of these ﬁndings allow us to hypothesize that elevated binding...

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Tài liệu Báo cáo khoa học: Shaped by the environment – adaptation in plants Meeting report based on the presentations at the FEBS Workshop ‘Adaptation Potential in Plants’ 2009 (Vienna, Austria) pdf

Ngày tải lên : 18/02/2014, 11:20

... thought by providing just such an interdisciplinary forum, in which research results, including novel concepts such as environmen- tally induced increases in mutation rates in bacteria and a ... approaches, including transcriptome proﬁling, and forward and reverse genetics, to identify mechanisms involved in acquired thermotol- erance in plants. Transcriptome proﬁling revealed 57 transcripts ... gene regulons and regulatory pathways involved in freezing tolerance in Arabidopsis. Freezing tolerance increases in many plants in response to low, non-freezing temperature, a process known as...

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Tài liệu Linux Shell Scripting Cookbook pdf

Ngày tải lên : 21/02/2014, 19:20

... and in different formats. How to do it echo is the basic command for printing in the terminal. www.it-ebooks.info Shell Something Out 8 In this book we are dealing with Bash (Bourne Again Shell) , ... utility by which a user interacts with the shell environment. Printing text in the terminal is a basic task that most shell scripts and utilities need to perform regularly. Printing can be performed ... chapter explains how to generate large size les, installing a le system on les and mounting les, nding and removing duplicate les, counting lines in a le, creating ISO images, collecting details...