By Peter Seebach
This booklet introduces an essential new element of shell scripting to the massive variety of directors and builders operating throughout Linux, OS X and Unix command line. whereas there were different shell scripting books, Peter Seebach right here addresses the fashionable factor of portability to this wide purchaser base. This booklet, addressing a large know-how base, is decided to turn into the fashionable shell scripting reference.
Read or Download Beginning Portable Shell Scripting: From Novice to Professional (Expert's Voice in Open Source) PDF
Similar linux books
"This is more or less a humorous ebook for me to be recommending to readers of a home windows publication, yet lots of people question me approximately this subject, so right here is going. writer Marcel Gagné is a columnist for Linux magazine, and in relocating to Linux he is ready a step by step advisor to changing a home windows computer to Linux-or simply making an attempt it!
I purchased this booklet with no studying the experiences and that i say do not buy this publication except you have got a again dated model of RH Linux you want to aid. Get a extra present model that covers RH five. x.
This IBM Redbooks e-book describes the way to roll your individual Linux digital servers on IBM approach z less than z/VM. This version applies to model five, liberate four, amendment zero of z/VM (product quantity 5741-A05) and model five, unencumber 2 of purple Hat company Linux. With a z/VM and Linux infrastructure, you could decrease the time among deciding upon the purchase of latest servers after which enforcing them simply because new servers should be deployed in an issue of mins.
Arm your self to utilize the flexible, strong Ubuntu Server with over a hundred hands-on recipesAbout This BookMaster the abilities to setup safe and scalable net prone with renowned instruments like Apache, Nginx, MySQL and HAProxySet up your individual cloud with Open Stack and fast install functions with Docker or LXDPacked with transparent, step by step recipes to allow you to shield you helpful facts together with your personal chat servers, code website hosting and collaboration instruments.
- Learn Linux in a Month of Lunches
- Linux Kernel Module Programming Guide
- Embedded Linux Projects Using Yocto Project Cookbook
Extra info for Beginning Portable Shell Scripting: From Novice to Professional (Expert's Voice in Open Source)
N" "$password" Your password is xfzy%dNo. In general, I recommend using s ingle-quoted strings as printf format strings; this ensures that the calling shell will not do something unexpected with any backslash escape sequences you used (behavior of backslashes inside d ouble-quoted strings is not always 100% portable), and that no parameter substitution occurs; this allows you to be sure you know what your format string is. Some implementations of printf have difficulties with particularly long formats; for example, the Solaris printf aborts when given the format string %05000d.
Do not write carelessly or poorly, even for small one-off scripts. Sloppy work is habit-forming. 10436ch01final 10 10/23/08 11:37:27 PM C h a p t e r 1 ■ I N TRO D U C T I O N T O S HE LL S C R I PT I N G 11 What’s in This Book The next section offers a very quick overview of the shell, without going into great detail on the formal syntax or semantics of shell scripting. If you’ve used the shell before, you may be able to skip it and get into the more detailed material in the following chapters.
Most commonly, you simply enclose a string in single quotes (') to prevent the shell from modifying it. Here’s a review of the hello world example, using quoting: $ set -x $ echo 'hello, world' + echo hello, world hello, world $ echo 'hello, world' + echo hello, world hello, world $ echo ' hello, world' + echo hello, world hello, world Single quotes prevent the shell from modifying input, including word splitting. The quote marks themselves are removed. While this is useful for arguments, it is important not to quote things that you do want the shell to split.