This is an essential book for both developers and sysadmins who write Perl code to get their job done.
Perl is very powerful language and there are several ways you can code in Perl to get the same results. If you are not careful, you may end-up writing Perl code that is very hard to understand and maintain in a long run.
Question: How do I find out what time I executed a command previously on Unix OS? The history command doesn’t display timestamp.
Answer: Set HISTTIMEFORMAT as shown below. Please note that there is a space before the last single-quotes.
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Question: I would like to understand the basics of how to write and execute a ruby program on Linux OS. Can you explain it with a simple example?
Answer: In this article, let us review very quickly how to write a basic Hello World ruby program and execute *.rb program on Linux or Unix OS.
This article is part of on-going Unix Sed Tutorial series. In previous articles, we discussed about sed print operation and sed delete operation.
In this article let us review how to use sed substitute command “s”.
The `s’ command is probably the most important in `sed’ and has a lot of different options.
wget utility is the best option to download files from internet. wget can pretty much handle all complex download situations including large file downloads, recursive downloads, non-interactive downloads, multiple file downloads etc.,
In this article let us review how to use wget for various download scenarios using 15 awesome wget examples.
Question: How do I Install Java on Ubuntu or Debian OS?
Answer: If Java is not installed, you’ll get the following error message when you do java -version.
Question: I’m unable to do su – on Ubuntu. It says “su: Authentication failure”. How do I fix it? Also, is it possible for me to login to Ubuntu using root account directly?
Answer: Let us address these two question one by one.
Question: I would like to understand the basics of how to write and execute Perl program on Linux OS. Can you explain it with a simple example?
Answer: In this article, let us review very quickly how to write a basic Hello World Perl program and execute *.pl program on Linux or Unix OS.
Linux 101 Hacks 2nd Edition eBook - Practical Examples to Build a Strong Foundation in Linux
My name is Ramesh Natarajan. I will be posting instruction guides, how-to, troubleshooting tips and tricks on Linux, database, hardware, security and web. My focus is to write articles that will either teach you or help you resolve a problem. Read more about Ramesh Natarajan and the blog.Copyright © 2008–2024 Ramesh Natarajan. All rights reserved | Terms of Service