unix shell programming loop example
Learning the bash shell - unix shell programming
... 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 B contains lists of shell ... Parallelization 8.6. Subshells 8.6.1. Subshell Inheritance 8.6.2. Nested Subshells 8.7. Process Substitution 9. Debugging Shell Programs 9 Intended Audience This book is designed to address casual UNIX and ... 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,...
Ngày tải lên: 19/03/2014, 13:38
shell programming in unix
... commands " if cond ; then ! Shell in UNIX " # " $% Chương trình shell " & " '()*&+&,)-./ " 01&+&&23&4 567 89+ :; ...
Ngày tải lên: 09/05/2014, 08:45
VHDL Programming by Example 4th Edition
... 40 Process Example 40 Signal Assignment Versus Variable Assignment 42 Incorrect Mux Example 43 Correct Mux Example 45 Sequential Statements 46 IF Statements 47 CASE Statements 48 LOOP Statements ... the preceding example, the key- words are ENTITY , IS , PORT , IN , INOUT , and so on. The standard type pro- vided is BIT . Names of user-created objects such as mux , in the example above, ... the language and examples used throughout the book. In the first section VHDL features are introduced one or more at a time. As each feature is introduced, one or more real examples are given...
Ngày tải lên: 16/08/2012, 08:46
Foreword và Predace của VHDL Programming by Example 4th Edition_01
... Preface xvi range of types available for use in VHDL. Examples are given for each of the types showing how they would be used in a real example. In Chapter 5 the concepts of subprograms and packages ... five kinds of VHDL attributes. Each attribute kind has examples describing how to use the specific attribute to the designer’s best advantage. Examples are given which describe the pur- pose of ... the language and examples used throughout the book. In the first section VHDL features are introduced one or more at a time. As each feature is introduced, one or more real examples are given...
Ngày tải lên: 29/09/2013, 19:20
Shell Programming
... Systems Administration Chapter 9: Shell Programming Page 178 Chapter Shell Programming Introduction Shell programming - WHY? While it is very nice to have a shell at which you can issue commands, ... shell scripts, you can't modify or fix the start up process. Shell programming - WHAT? A shell program (sometimes referred to as a shell script) is a text file containing shell and UNIX ... written for the Bourne shell ( sh/bash ) will not run in the C shell ( csh ). All the examples in this chapter are written for the Bourne shell. Shell programming - HOW? Shell programs are...
Ngày tải lên: 19/10/2013, 02:20
Shell programming
... lệnh set hoặc env. Một vài biến hệ thống quan trọng: BASH=/bin/bash - tên shell. BASH_VERSION=1.14.7(1) - phiên bản của shell. COLUMNS=80 - số cột cho màn hình. HOME=/home/vivek - thư mục nhà. LINES=25 ... dẫn. PS1=[\u@\h \W]\$ - thiết lập prompt. PWD=/home/students/Common - thư mục hiện hành. SHELL= /bin/bash - tên shell. USERNAME=vivek - user nào hiện đang đăng nhập vào PC. Bạn có thể in ra bất kỳ ... kết thúc (exit status): Mặc định trong Linux nếu lệnh /shell script được thực thi, nó sẽ trả về hai loại giá trị - được sử dụng để xem lệnh /shell script được thực thi thành công hay không. 1. Nếu...
Ngày tải lên: 04/01/2014, 12:53
Tài liệu Programming by Example docx
... 40 Process Example 40 Signal Assignment Versus Variable Assignment 42 Incorrect Mux Example 43 Correct Mux Example 45 Sequential Statements 46 IF Statements 47 CASE Statements 48 LOOP Statements ... way to map that functionality to either sequential or combinational logic. Process Example Let’s look at an example of a process statement in an architecture to see how the process statement ... Preface xvi range of types available for use in VHDL. Examples are given for each of the types showing how they would be used in a real example. In Chapter 5 the concepts of subprograms and packages...
Ngày tải lên: 19/01/2014, 09:20
Unix network programming volume 1
... Stevens/Bill Fenner/Andrew M. Rudoff, UNIX Network Programming Volume 1, Third Edition: The Sockets Networking API W. Richard Stevens, Advanced Programming in the UNIX Environment W. Richard Stevens, ... environment: UNIX Network Programming, Volume 1, Third Edition . Building on the legendary work of W. Richard Stevens, this edition has been fully updated by two leading network programming experts ... environment: UNIX Network Programming, Volume 1, Third Edition . Building on the legendary work of W. Richard Stevens, this edition has been fully updated by two leading network programming experts...
Ngày tải lên: 19/03/2014, 13:36
Koenig, moo accelerated c++ practical programming by example
... Series Accelerated C++: Practical Programming by Example, Andrew Koenig and Barbara E. Moo Essential C++, Stanley B. Lippman Exceptional C++; 47 Engineering Puzzles, Programming Problems, and Solutions, ... write an asterisk. Moreover, we can use our knowledge of the loop invariants to determine whether it is time to write an asterisk. For example, if r is zero, we know from the invariant that we have ... used to understand this loop will come in handy in a variety of contexts. The general idea is to find an invariant that states a relevant property of the variables that the loop involves (we have...
Ngày tải lên: 19/03/2014, 14:10