Classic Shell Scripting: Hidden Commands that Unlock the Power of Unix by Arnold RobbinsShell scripting skills never go out of style. Its the shell that unlocks the real potential of Unix. Shell scripting is essential for Unix users and system administrators-a way to quickly harness and customize the full power of any Unix system. With shell scripts, you can combine the fundamental Unix text and file processing commands to crunch data and automate repetitive tasks. But beneath this simple promise lies a treacherous ocean of variations in Unix commands and standards. Classic Shell Scripting is written to help you reliably navigate these tricky waters.
Writing shell scripts requires more than just a knowledge of the shell language, it also requires familiarity with the individual Unix programs: why each one is there, how to use them by themselves, and in combination with the other programs. The authors are intimately familiar with the tips and tricks that can be used to create excellent scripts, as well as the traps that can make your best effort a bad shell script. With Classic Shell Scripting youll avoid hours of wasted effort. Youll learn not only write useful shell scripts, but how to do it properly and portably.
The ability to program and customize the shell quickly, reliably, and portably to get the best out of any individual system is an important skill for anyone operating and maintaining Unix or Linux systems. Classic Shell Scripting gives you everything you need to master these essential skills.
10 Basic Tips on Working Fast in UNIX or Linux Terminal
Our group works with genomics datasets. We work exclusively in unix, but we'll sometimes have a researcher visit temporarily that has never used unix. If the researcher is using one particular tool - R or Perl, for example - we'll guide them to a beginners book for that tool that covers unix in passing. But sometimes they just want to get started quickly and run a few command line utilities. A short book or long tutorial would be best for this case, but I can't find a good one. You should start with a list of very basic assignments. It's time consuming for the guider but it's a very nice way to learn I wish someone did that for me.
Unix was still a chilling concept for me when I arrived at the San Francisco office armed with a copy of Unix for Dummies. The managing editor steered me to my desk and instead of the Macintosh I was hoping for, there sat a purple SGI machine. I realized then that I needed to learn a lot about Unix fast. So I stole some better Unix books from the engineering staff and found a nice Unix expert to help me. Soon I was cp -ing, mv -ing, and chmod -ing like lightning. Unix still gives me the occasional nightmare, but basically I love it. But first, a warning.
Every month or two, someone asks me how they should go about learning Unix. The short answer is always "use it" or maybe as much as "use it -- a lot. But the detailed answer includes a lot of steps and a good amount of commitment to spending time working on the command line. I may have learned some of the most important parts of making my way on the Unix command line the first week that I used it back in the early 80's but I had to spend a lot of time with it before I was really good. So here is my detailed answer. The first thing you really need to do if you want to learn how to be productive on the Unix command line is to get access to a system and start working on the command line.
The challenge for most people when they first start learning UNIX is . Don't worry, things quickly become more interesting in the UNIX world.
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If you have not read those you can see if you find them interesting and useful. For example, After doing ls -l stocks. This is the extension of the previous tip which is used to execute the very last command you have executed. All the above three tips will save a lot of your time if you execute commands frequently and percentage of repetition is quite high. The grep and find are the two best tools UNIX provide to us. ERROR or Exception and if you know how to use the grep and find with regular expression you will save a lot of your time by typing fewer commands. I have shared a lot of useful options for these two commands on those articles, which will help you to get more from this two powerful Linux commands.
Do you need to gain a quick understanding of UNIX basics for an upcoming job interview? This quick start guide to UNIX, which is oriented towards absolute beginners, will provide you with a practical framework to follow for learning UNIX in a short period of time so that you can successfully navigate a server running UNIX and be able to confidently talk about key operating system concepts, commands and practices. The challenge for most people when they first start learning UNIX is that it can be intimidating since it is quite different from operating systems they have worked with in the past, and also because they do not know exactly where to begin. We hope that this guide will make UNIX less intimidating by guiding you through the key areas that will provide you with a solid foundation to start from. Let's get started