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30 total results found

In Unix, what do I do when a file I want to edit in vi says "Line too long"?

MacOS, Windows, and Linux Linux and Unix

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

Description and guidelines on creating system service agent accounts on Mac OS X (Tiger)

MacOS, Windows, and Linux

For any system service agent that you want to create in Mac OS X, you would do the following:sudo...

How do I extract certain columns from a text file in Unix?

MacOS, Windows, and Linux Linux and Unix

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

finding words in binary files

MacOS, Windows, and Linux Linux and Unix

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

X11 on MacBook Pros

MacOS, Windows, and Linux

As of August 2007, Apple made a real effort to hide X11 on Tiger install disks for MacBook Pros. ...

using find and chmod together in Unix

MacOS, Windows, and Linux Linux and Unix

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

Useful Commands for Vi

MacOS, Windows, and Linux Linux and Unix

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

Reasons to Use Vim over Vi

MacOS, Windows, and Linux Linux and Unix

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

Calculate Duration Between Two Dates

Useful Links

Using this website, you can easily calculate the number of days between two dates:http://www.time...

Advantages of less over more (UNIX)

MacOS, Windows, and Linux Linux and Unix

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

Unix Cheat Sheets and Tricks

MacOS, Windows, and Linux Linux and Unix

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

Finding most recently changed files in Unix

MacOS, Windows, and Linux Linux and Unix

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

lsof, the least talked about Unix tool

MacOS, Windows, and Linux Linux and Unix

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

UNIX Tutorials

MacOS, Windows, and Linux Linux and Unix

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

How do I keep color output when paginating shell output through less?

MacOS, Windows, and Linux Linux and Unix

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

Apple OS/X Hex Editor

MacOS, Windows, and Linux

If you need a hex editor in OS/X to see exactly what is in a file, download this free one. http:/...

On a UNIX / Linux system, how do I view which shared libraries a program needs?

Programming and Web Development

To get a list of shared libraries that a program needs:ldd /path/to/programThis will give you a l...

My hard disk is dying! How do I make an emergency backup?

MacOS, Windows, and Linux

Disaster has struck and your hard disk is in its final death throes. No problem, you made a backu...

vi editing notes

MacOS, Windows, and Linux Linux and Unix

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

Awk Explained

MacOS, Windows, and Linux Linux and Unix

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