Linux and Unix

Sometimes, there are multiple man pages under the same name, identified by section numbers. For e...

Learning Shell Scripting Language: A Guide from Newbies to System Administrator – October 3, 201...

Apparently this is one of the least talked about, but most useful Linux/Unix tools.lsof lists inf...

In Unix, when the vi editor says “line too long” it’s usually because it was copied up from a Mac...

As the root user, enter the following at the command line:$ zdump -v /etc/localtime | grep 2007Yo...

I learned at least three things from this list, and I’ve been using ls for years.15 Basic ‘ls’ Co...

Here are some interesting examples of cron job use. http://www.thegeekstuff.com/2009/06/15-practi...

Coming from Solaris to Linux, one thing I’ve missed for years was that the Linux bash history com...

Somehow I can never remember the cut command in Unix. But I occasionally want to remove certain c...

If you have any tools for monitoring Linux, or have comments or limitations on these, please add ...

Awk is a Unix tool that can be very useful for dealing with text but can be hard to understand. H...

How do I find the most recently changed files in a set of subdirectories on Unix or Linux?Answer ...

The text below was copied with permission from post by Harry Mangalam, UCI, to UC-CSC Mailing Lis...

The problem is that when I run script x and redirect it to a file, all of the error messages come...

Let’s say that you like the color output that comes out of ls (different colors for different fil...

While Unix is an extremely flexible, powerful, and stable operating system, mastering it can requ...

vi is a Unix text editor that is almost always available, on any Unix or Linux system. Knowing ho...

I’ve used scp for years, but didn’t know many of these options. The compress-before-transferring...

The Ten Minute Guide to diff and patch Using diff and patch

Learn UNIX in 10 minutesUNIX Tutorial for BeginnersHow To Look Like A UNIX GuruBest Practices Lea...

The Linux “tee” command is extremely useful in the right situation. This article gives some good ...

This is an introduction to those using Linux for data analysis for the first time.It came from a ...

This article is intended to provided reasons to use the UNIX program less over its predicessor mo...

By default, all searches in vi are case-sensitive. To do a case-insensitive search, go into comma...

The Unix editor vi lets you customize its behavior in a numer of ways. There are two ways to cust...

When you do php through command line (i.e. `php somescript.php`) and you pipe it to less (i.e. `p...

Although tar can be used to synchronize/copy files/directories from one location to another (i.e....

When pasting text into a vi editing screen, sometimes you’ll get each line increasingly indented ...

This was contributed by a colleague from UCI, Harry Mangalam.Having spent 3 days debugging this, ...

count logins in last commandIf you want to take the output of the Linux last command, and get a c...

Here’s an intro to understanding what’s going on with a Linux server, quickly.http://techblog.net...

This page Difference Between VIM and vi goes over some of the advantages of vim over vi. (Note: ...

I’m writing this so I can find it next time I want to do this, and so my student programmers can ...

The page is meant to document some of the more useful, but obscure commands in vi. For commands e...

In Unix, if you need to clear up a set of subdirectories to see what permissions or ownership of ...

In Unix the strings -a command will output all the text strings in a binary file.Solaris man page...

I’ve been using grep (Global Regular Expression Print) to search files on Unix for years and neve...

The log file contains the commands issued along with the issuers’ user names. Distribution Lo...