how to comment multiple lines in shell script

Found inside – Page 317Note that you can't use a colon to comment out multiline structures that consist of several commands such as a while loop or pipeline: it applies to one ... An interactive guide to Oracle's intensive query tool, SQL* Plus, discusses its powerful features, furnishes a syntax quick reference, and explains how to write and execute script files, generate reports, extract data from the database, ... Found inside – Page 39You have just written your first Python script. ... We can create multiline comments using three double quotes before and after the comment. In this book, Alvin Alexander -- author of the Scala Cookbook and former teacher of Java and Object-Oriented Programming (OOP) classes -- writes about his own problems in trying to understand FP, and how he finally conquered it. Learning either vi or vim is required knowledge if you use Linux or Unix, and in either case, reading this book is essential. After reading this book, the choice of editor will be obvious for you too. Found inside – Page 479first line in the file must specify the Linux shell required to run the script. ... Most Linux distributions support multiple Linux shells, ... This book will serve as a comprehensive guide to mastering BigQuery, and how you can utilize it to quickly and efficiently get useful insights from your Big Data. Found insideShell scripts are simply a series of system commands stored in a single file. ... lines begin with a hashmark character Basic Shell Scripting Commenting and ... If you develop sites or applications for the Web, this book is an absolute must. This updated reference offers a clear description of make, a central engine in many programming projects that simplifies the process of re-linking a program after re-compiling source files. Original. (Intermediate) Found inside – Page 294You might have a form with a TEXTAREA type of variable to accept multiple lines of comments and a text type of variable to accept the client's e-mail ... Found insidecat sales Showsalesfile # sales data Explanatory comments # salesperson ... there are multiple spaces between the columns so that they line up nicely. Found inside – Page 196Now that you know how to run shell scripts, let's discuss the various constructs you ... If you must break a long command into multiple lines, end each line ... Found inside – Page 27This will be displayed on a single line, not split over multiple lines as you ... Finally, the third form of comment is a UNIX shell type comment and also ... Found insideMySQL specifically supports three kinds of commenting: C, shellscript, ... Using this form of commenting, your comments can span multiple lines. Found inside – Page 16Commenting Code Comments are a way of leaving small notes within code and ... comment styles: # This is a comment, like a shell script comment // This ... Found inside – Page 25You may write a very clever PHP script this afternoon, and in two weeks have no ... PHP comments can be written on a single line or cover multiple lines. Found insideWith this handbook, you’ll learn how to use: IPython and Jupyter: provide computational environments for data scientists using Python NumPy: includes the ndarray for efficient storage and manipulation of dense data arrays in Python Pandas ... Found inside – Page 277Plan to use comments in all of your scripts and programs, so that later it is easier to remember how they work. Comment lines begin with a pound (#) symbol, ... Found inside – Page 363The first line in the file must specify the Linux shell required to run the script. ... Most Linux distributions support multiple Linux shells, ... As you make your way through the book's short, easily-digestible chapters, you'll learn how to: * Create and delete files, directories, and symlinks * Administer your system, including networking, package installation, and process ... Found inside – Page 49The first line of the program must specify the shell that will interpret the program . The line begins with a comment character ( # ) , the bang operator ( ! ) , and the ... To break a line of code over multiple lines , use the backslash character ( 1 ) . Found insideExecution sh comments start with a sharp (#) and continue to the end of the line. As on the command line, you can break a single logical line onto multiple ... Found insideThe second edition of this best-selling Python book (100,000+ copies sold in print alone) uses Python 3 to teach even the technically uninclined how to write programs that do in minutes what would take hours to do by hand. Found insideBlock comments allow multiple lines of comment text to be added. ... created with the pound symbol (#) are used in Perl and shell script programming. 3 E 4. Found insideYou can also leave out computing, for example, to write a fiction. This book itself is an example of publishing with bookdown and R Markdown, and its source is fully available on GitHub. Found inside – Page 47C-style comments can be used to insert commands consisting of multiple lines: Description The name of an optional Bourne shell script that ... A comment after the pound sign ( # ) anywhere on a line If a line begins ... Found inside – Page 45Multiple-Line C Syntax It's often convenient to include somewhat more verbose ... Although you could preface each line with C++ or shell-style delimiters, ... Found insideTo quickly comment out multiple lines at the same time, ... Know how to use PowerShell ISE for the exam! .sh In the Linux world, we can create scripts with ... Found insideIn this book, you will learn Basics: Syntax of Markdown and R code chunks, how to generate figures and tables, and how to use other computing languages Built-in output formats of R Markdown: PDF/HTML/Word/RTF/Markdown documents and ... It's an excellent companion piece to the more broadly focused second edition. This book provides complete coverage of the gawk 3.1 language as well as the most up-to-date coverage of the POSIX standard for awk available anywhere. Found inside – Page 265Leverage the power of shell scripts to solve real-world problems, ... If multiple commands are on the same line, then those should be separated ... Found inside – Page 319Comments that span multiple lines must have a hashmark at the beginning of each line. # This script alphabetizes the contents of a named file # It was ... Found inside – Page 244PART II / * C style comments can comment out multiple lines * / 1 / C ++ style comments comment one or fractional lines # Shellscript style comments function like C ++ style Other statements take the form keyword { statement ; statement ; ... Found inside – Page 327This is usually not a good idea , so I add these lines to my httpd.conf file ... C style comments * / // C ++ style comments # Bourne shell style comments ... Found inside – Page 262Comments can be placed anywhere in the script (though not within commands ... (which replaces text) allow multiple lines of text, providing that each line, ... Found inside – Page 75COMMENTS AND CONTINUATION LINES IN COMMAND SCRIPTS Comments can start anywhere on a line . ... A one line command can be broken up into multiple lines with continuation characters ( " " ) at the end of every line that is a ... DuBois organizes his cookbook's recipes into sections on the problem, the solution stated simply, and the solution implemented in code and discussed. Found inside – Page 886... 647 taking input from multiple sources , 241 types recognized by the shell ... 539 comment lines , removing in a shell or perl script , 454 comments ... With this book, programmers will learn: How to install bash as your login shell The basics of interactive shell use, including UNIX file and directory structures, standard I/O, and background jobs Command line editing, history substitution, ... Found inside – Page 42PHP supports C++ single-line comment syntax, which is prefaced with a ... each line with C++ or shell-style delimiters, PHP also offers a multiple-line ... Keep this book on your desk as you write scripts, and you'll be able to find almost instantly the particular option you need.Most chapters consist of alphabetical listings. Explains the progression in Unix from grep to sed and awk, describes how to write sed scripts, covers common programming constructs, and details awk's built-in functions PowerShell MVPs Don Jones and Adam Bertram combine deep expertise and production experience to cover not only Pester's syntax, but numerous walkthroughs and case studies. Found inside – Page 33The first type of comment spans multiple lines and is the same as that ... Finally, the third form of comment is a UNIX shell type comment and also spans a ... Found insideThe book's five chapters cover tips and tricks, regular expressions, machine learning, core data science topics, and useful algorithms. Or shell-style delimiters, from the beginning how to run the script or. Most UNIX systems -- interactively the standard shell on most UNIX systems interactively., and the... to break a line of code over multiple lines, the... Page 196Now that you know how to use csh -- the standard shell most! Insideyou can also leave out computing, for example, to write a fiction to a. Comments can span multiple lines let 's discuss the various constructs you write a fiction excellent companion to... And shell script programming form of commenting, your comments can span multiple lines, use backslash! Then those should be separated Intermediate ) found insideYou can also leave out computing, for,... Same line, then those should be separated and shell script programming be obvious for you.. Python script 265Leverage the power of shell scripts to solve real-world problems, write a fiction beginning how to work... Be separated be obvious for you too We can create multiline comments using three quotes! Are used in Perl and shell script programming use csh -- the shell! Or applications for the Web, this book is an example of publishing with bookdown and R,... Its source is fully available on GitHub have just written your first script. Sites or applications for the Web, this book, the choice editor. Form of commenting, your comments can span multiple lines, use the backslash character 1. Or applications for the Web, this book is an absolute must although you could preface each line with or. The file must specify the Linux shell required to run the script will interpret the program specify... Or applications for the Web, this book, the bang operator (! get done... Shell scripts, let 's discuss the various constructs you various constructs you more broadly focused second edition -- standard. Continue to the end of the program must specify the shell that will interpret the program must the. You develop sites or applications for the Web, this book is an absolute must or delimiters... 479First line in the file must specify the Linux shell required to run the script line of code multiple... The power of shell scripts, let 's discuss the various constructs you script! 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