linux shell scripting cookbook 2nd pdf

... this file using themk_large_file.kshshell script) A 7,500-line file is an extremely large file to beparsing line by line in a shell script, about 600 MB, but my Linux machine is so fast that I needed ... file that has 7,500 lines, you Trang 8add the number of lines as a parameter to the shell script name Using the shell scriptin Listing 2.1, you create a 7,500-line file with the following syntax: ... mk_large_file.ksh shell script listing (continued) Each line produced by the mk_large_file.ksh script is the same length The userspecifies the total number of lines to create as a parameter to the shell

Ngày tải lên: 09/08/2014, 16:20

... shell script. (continued) 398 Chapter 15 /usr/bin/cat $OUTPUT_FILE | /usr/bin/more ;; esac rm -f $OUTPUT_FILE # End of Script Cleanup Listing 15.1 hgrep.ksh shell script. (continued) In the shell ... queuing_only_UP_Linux.ksh shell script listing Notice that the only thing that was changed this time is the first case statement structure was removed from the script and the name of the shell script ... modify the shell script in Listing 16.8 to add a command-line parameter to let you control queuing and printing individually from the same shell. .. Now we need to combine the shell scripts

Ngày tải lên: 09/08/2014, 16:20

... Introduction to Linux What Linux is? Who developed the Linux? How to get Linux? How to Install Linux Where I can use Linux? What Kernel Is? What is Linux Shell? How to use Shell What is Shell Script ... the Linux? LSST v1.05r3 > Chapter > Who developed the Linux? Prev Linux Shell Scripting Tutorial (LSST) v1.05r3 Chapter 1: Introduction: Quick Introduction to Linux Next Who developed the Linux? ... Examples of Shell Scripts http://www.cyberciti.biz/pdf/lsst/index.html (3 of 5) [7/29/2002 6:50:01 PM] Linux Shell Scripting Tutorial v1.05r3 - A Beginner's handbook Logic Development: Shell script

Ngày tải lên: 05/11/2019, 14:32

... Trang 2Linux Shell ScriptingChapter 1: Quick Introduction to Linux What Linux is? Who developed the Linux? How to get Linux? How to Install Linux Where I can use Linux? What Kernel Is? What is Linux ... Linux Shell? How to use Shell What is Shell Script ? Why to Write Shell Script ? More on Shell Chapter 2: Getting started with Shell Programming How to write shell script Variables in shell ... > What is Linux Shell ? http://www.cyberciti.biz/pdf/lsst/ch01sec07.html (2 of 2) [7/29/2002 6:51:30 PM] Trang 19Linux Shell Scripting Tutorial (LSST) v1.05r3How to use Shell To use shell (You

Ngày tải lên: 16/11/2019, 20:58

... Trang 2Linux Shell ScriptingChapter 1: Quick Introduction to Linux What Linux is? Who developed the Linux? How to get Linux? How to Install Linux Where I can use Linux? What Kernel Is? What is Linux ... Linux Shell? How to use Shell What is Shell Script ? Why to Write Shell Script ? More on Shell Chapter 2: Getting started with Shell Programming How to write shell script Variables in shell ... > What is Linux Shell ? http://www.cyberciti.biz/pdf/lsst/ch01sec07.html (2 of 2) [7/29/2002 6:51:30 PM] Trang 19Linux Shell Scripting Tutorial (LSST) v1.05r3How to use Shell To use shell (You

Ngày tải lên: 17/11/2019, 07:35

... along your Linux journey Visit http://www.linuxtrainingacademy.com/linux-apps or click here to download your free gift Introduction I have been working at the command line on Unix and Linux systems ... the Linux command line and operating system please read my other book Linux for Beginners It will give you a strong foundation upon which you can build your Linux skills Let's get started Shell ... would like to give you a copy of Linux Alternatives to Windows Applications In it, you will be introduced to over 50 of the most popular applications available for Linux today These applications

Ngày tải lên: 20/03/2018, 09:14

... lệnh Linux và Shell viết kịch bản Giải pháp mạng, đám mây và an ninh mạng (Boğaziçi Üniversitesi) Trang 2Chính xácChính xác Zsh là một ví dụ về shell Chính xác Chính xác Windows không dựa trên Linux ... Linux 1 Câu hỏi 1 Phát biểu nào sau đây về Linux là KHÔNG đúng? Hệ điều hành Android được sử dụng trong nhiều điện thoại thông minh sử dụng nhân dựa trên Linux Windows dựa trên hệ điều hành Linux. ... bản phân phối Linux là KHÔNG đúng?Mỗi bản phân phối Linux được điều chỉnh cho một đối tượng hoặc nhiệm vụ cụ thể. Bản phân phối Linux còn được gọi là bản phân phối Một bản phân phối Linux phải dựa

Ngày tải lên: 09/04/2023, 22:30

... Installing Red Hat Linux A simplified installation procedure is one of the best reasons for using a Linux distribution such as Red Hat Linux. In many cases, for a computer dedicated to using Linux, you ... problems preventing your Linux system from operating properly. • linux dd: Type linux dd if you have a driver disk you want to use to install. You can add other options to the linux boot command to ... Red Hat Linux is a distribution of Linux that packages together the software needed to run Linux and makes it easier to install and run. Features in Red Hat Linux include a simplified installation

Ngày tải lên: 19/01/2014, 18:20

... 7 Linux’s Roots in UNIX 8 Common Linux Features 9 Primary Advantages of Linux 10 What Is Red Hat Linux? 11 Why Choose Red Hat Linux? 11 New Features in Red Hat Linux 7.2 12 Improvements to Linux ... Red Hat Linux 65 Chapter List 65 Chapter 3: Getting to Know Red Hat Linux 66 Logging in to Red Hat Linux 66 The login session 68 The shell interface 68 Understanding the Red Hat Linux Shell 72 ... Hat Linux 7.2 Bible, Unlimited Edition 1Part I: Getting Started in Red Hat Linux 5 Chapter List 5 Chapter 1: An Overview of Red Hat Linux 6 Overview 6 Introducing Red Hat Linux 6 What Is Linux?

Ngày tải lên: 19/01/2014, 18:20

... LINUX gọi là SHELL Có nhiều trình thông dịch SHELL SHELL of BOURNE (sh) của AT&T Korn SHELL (ksh) trên UNIX C SHELL (csh) của Berkeley Tenex SHELL (tcsh) Bourne Again SHELL (bash) 4 SHELL ... ĐIỀU HÀNH LINUX (SHELL) Phạm Nguyên Khang, Đỗ Thanh Nghị Email: pnkhang,dtnghi@cit.ctu.edu.vn 2 Nội dung SHELL Trình thông dịch SHELL Cấu hình phiên làm việc Lập trình SHELL 3 SHELL Tất ... ấn ENTER, SHELL sẽ đọc lệnh từ bàn phím Phân tích cú pháp (kiểm tra lỗi, tách tham số, …) Thay thế các ký tự đại diện/mở rộng các tham số (nếu có): SHELL Expansion Thực thi lệnh Ví dụ: SHELL hiển

Ngày tải lên: 04/05/2014, 21:43

... contains shell metacharacters that must be protected from expansion. The chsh command changes a user’s login shell. Its syntax is: chsh [-s shell ] [-l] [username] -s shell sets username’s login shell ... an account by set- ting shell to /bin/false or another command that does not display a login prompt to the user. Using the -l option displays the shells listed in /etc/shells. The chage command ... Red Hat Linux distributions and carried forward into Fedora Core and RHEL. UPGs are intended to make Linux groups easier to use. Although the UPG scheme does not add or change the normal Linux

Ngày tải lên: 07/07/2014, 09:20

... SSH (Secure Shell) firewall configuration for, 57 overview, 434–436 scp with, 431–433 sftp over, 433, 509–510 Telnet versus, 430, 434 tunneling protocols through, 431 sshd (secure shell daemon), ... needed by, 4 responsibilities of, 4 as root user, 4–5 size of installation and, 4 uniqueness of Linux for, 3–4 system administrator duties backing up and restoring files, 7–9 configuring security, ... login, 168 system failure, 8, 9 system log log viewer for, 185–186, 881–882 messages indicating SELinux problems, 840–841 NTP-related entries, 405 Sudo logging to, 733 as troubleshooting resource,

Ngày tải lên: 07/07/2014, 09:20

... shell scripting section for Solaris later in this chapter Creating the Shell Scripts Now that we have the basic syntax of the commands to get paging and swap space tistics, we can start our scripting ... for the AIX shell script Take a look at the entire shell script shown inListing 6.3, and pay particular attention to the boldface type Trang 35# PLATFORM: AIX Only# # PURPOSE: This shell script ... We need to be able to execute this script onAIX, Linux, HP-UX, and Solaris without the need to change the script on each platform Running on AIX, Linux, HP-UX, and Solaris Can we run the filesystem

Ngày tải lên: 09/08/2014, 16:20

... script Scripting with the vmstat Command When you look at this shell script for vmstat you will think that you just saw this shell script in the last section Most of these two shell scripts ... echo “\nThe Operating System is $OS\n” ;; Linux) # Linux has only three relative columns in the output F1= 14 F2=15 Listing 7.12 vmstat_loadmon.ksh shell script listing (continues) 209 210 ... the iostat shell script Let’s now move on to the vmstat solution Using vmstat to Measure the System Load The vmstat shell script uses the exact same technique as the iostat shell script

Ngày tải lên: 09/08/2014, 16:20

... creating this shell script When we get tothe scripting section you will see the other tasks that I have in mind, and you can pickup a pointer or two from the chapter Arrays In a Korn shell we can ... variable For shell variables you must use the shell notation here, too Ifthe number of arguments on the command line exceeds three, then we display theusagefunction and exit the shell script ... to create the mk_passwd.ksh shell script The entireshell script is shown in Listing 10.15 Pay particular attention to the boldface textthroughout the mk_passwd.ksh shell script Trang 28# PURPOSE:

Ngày tải lên: 09/08/2014, 16:20

... useful tool for shell scripting solutions for various Unix flavors in a single shell script. I hope you enjoyed this chapter. I think we covered some unique ways to solve the scripting problems ... overkill for any large shop, but it is easy to modify the shell script to accomplish this task. You want to make the following change to the shell script after completing the tasks in the previous ... modified shell script to ping the /etc/hosts file is included on the Web site that accompanies the book. The filename is pinghostsfile.ksh. Logging I have not added any logging capability to this shell

Ngày tải lên: 09/08/2014, 16:20

... the original shell Therefore, when the script command stops executing, one of the shells in the fork terminates, but not the original shell This last exit logs out of the original shell You may ... configured for this shell script Refer to your sudo notes. # set -n # Uncomment to check syntax without any execution # set -x # Uncomment to debug this shell script # Listing 19.3 broot shell script ... then case `uname` in Linux) # Linux does not have “mailx” mail -s “$TS - $LOGNAME Audit Report” $LOG_MANAGER < TS=$(date +%m%d%y%H%M%S) # File time stamp Listing 19.3 broot shell script listing

Ngày tải lên: 09/08/2014, 16:20

... mk_unique_filename.ksh shell script listing. (continued) We need five functions in this shell script. As usual, we need a function for correct usage. We are expecting exactly one argument to this shell script, ... to this shell script. The my_program function is used to point to the program or shell script that needs all of these unique filenames. It is better to point to an external program or shell script ... floating-point math in shell scripts. In this chapter we are going to create shell scripts that add, subtract, multiply, divide, and average a list of numbers. With each of these shell scripts the

Ngày tải lên: 09/08/2014, 16:20

... 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 ... are Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 9 A core set of Unix tools are used over and over again when shell scripting. We cover the basics of the shell and ... Books Colophon Index 6 Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com 7 Foreword Surely I haven't been doing shell scripting for 30 years?!? Well, now

Ngày tải lên: 12/08/2014, 10:22

... characters ch are treated as a unit, and must be matched and Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Trang 2by [: and :] The keywords describe different ed hat ... ordinary characters; with an escaped metacharacter; with the (dot) Simpo PDF Merge and Split Unregistered Version - http://www.simpopdf.com Trang 3• Ordinary characters are those not listed in Table ... stand for themselves, and this usage should be pretty straightforward and obvious Thus, shell matches shell, WoRd matches WoRd but not word, and so on sions may include ranges of characters The

Ngày tải lên: 12/08/2014, 10:22