MacOS, Windows, and Linux

Windows XP

How do I see someone else's screen on Windows XP so I can help them?

If both machines are running Windows XP, you can use Remote Assistance (instead of Remote Deskto...

How to Change Your Computer Name in Windows XP

Here are the steps to change the name on your computer when you’re using Windows XP1. Go to “star...

Windows XP End of Life 4/8/2014

Microsoft will cease support for Windows XP on April 8, 2014. Computers running XP after April 8...

Repair the Master Boot Record in XP

Use the fixmbr command, available in Recovery Console, to repair the Master Boot Record on an XP...

Installation of TCP/IP Printer in Windows XP Using the Printer's IP Address

Using the IP address of a printer is one way to set up a printer on your Windows XP computer. You...

You can't add a printer and you have print spooler error in Windows XP

http://support.microsoft.com/default.aspx?scid=kb;en-us;324757Download and run the tool Microsoft...

Access denied error when installing Windows XP Service Pack 3

When attempting to upgrade Windows XP systems to Service Pack 3, you get one of the following err...

Dell Optiplex 755's and Windows XP installation

Windows XP installer does a blue screen of death on installation, with a STOP: 0×0000007B error. ...

Recover from a Corrupted Windows Registry

When a Windows XP sp2 system cannot boot, but system restore had been enabled (as is now by defau...

XP Desktop Setup for AIS Remote Printing

1. Enable LPR printing services (Print Services for Unix).Click on the Start Menu then Control Pa...

How can you encrypt files on a Windows XP system?

Windows XP EncryptionMicrosoft Windows XP Pro has built-in encryption as part of the file system ...

Remove WinXP Printer Notifications

See below if you’re tired of the pop-up balloon everytime you print. Remove WinXP Printer Notif...

How do I make a Windows XP PC automatically login?

If you want to have a Windows XP automatically log in (on a domain or not), you can use the Tweak...

Change the Default NumLock State in Windows XP

Problem: Numlock is enabled in the BIOS but doesn’t work on the XP logon screen.Solution: You can...

How do I get into SAFE MODE in Windows 2000/XP

Restart machine Hit F8 as the machine is booting up Select “Safe Mode” or “Safe Mode with Networ...

How to disable CD-ROM auto-run in Windows XP

Run the Registry Editor (regedit.exe) Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services...

I have Windows XP, how can I restore my computer to a previous configuration?

You can use a feature called �System Restore� to restore your Windows XP PC to a previous wor...

How do I disable automatic restarting when using Automatic Updates in Windows XP?

If you have enabled automatic updates on your Windows XP Machine, now the computer will restart b...

Windows XP Transfer Tool from Microsoft

As the end of support for Windows XP on April 8th nears Microsoft is continuing to focus on ensur...

OS X Lion

Windows Server

OS X El Capitan

Windows 7

Converting Windows 7 volume install from KMS to MAK

Most Windows 7 licenses at UCLA should be deployed via UCLA’s KMS over the network.However, some ...

Activate Windows 7 XP Mode

Windows 7’s XP Mode is not installed by default. Rather, qualifying Windows 7 versions can downl...

Windows 7 computer will not detect any USB Flash Drive

Steps to Safely Cleanup and Remove old USB Mass Storage Drivers on your PCShut down your computer...

DVD drivers error when installing Windows

I recently received a new HP Folio 13 ultrabook and began installing Windows 7 Pro 64 bit on it (...

Windows 7 Administrator Password

I have a department laptop that I use, I have forgotten the adminstrative password, is there away...

Black screen after Windows 7 install on late 2009 iMac

Boot into MacOS, install either NTFS Mounter or NTFS 3G in order to make the NTFS partition writa...

Windows 7 Backup and Restore

Windows 7 BackupDraft v0.1 — 6 April 2011Brian J. Won brian@ssc.ucla.eduUCLA Social Sciences Comp...

Are there any changes to the AIS Remote Printing (OASIS) setup directions for Windows 7?

The instructions for setting up AIS Remote Printing on XP still applies. I would recommend print...

Taskbar buttons switch to Last Active Window in Windows 7

In the Windows 7 taskbar, if you have lots of windows for the same application open, things may g...

manually assign KMS host to client running Windows Vista or 7

Windows Vista and 7 under MCCA at UCLA are validated through a KMS (key management service) serve...

win 7 imaging and deploying

I’m in the process of cloning my Win 7 images. I understand the only official way to change SID’...

Vista or Win7 client can't connect to file shares on older Win boxes or NAS devices

Microsoft has enhanced their security standards, in particular their aging Samba (SMB) Windows Fi...

Mouse scroll wheel issues in Windows 7

A mouse with a scroll wheel that works fine in Windows Vista, Windows XP, and other OS’es does no...

Windows 7 Upgrade Paths

There is much information on upgrading Windows Vista to Windows 7 on the Internet.Note, Windows V...

Windows 7 Migration Time

A “clean install” for Windows 7 is preferred, but Windows Vista users have an option to upgrade t...

Microsoft Windows 7 Support Areas

With the official Windows 7 release, MSDN virtual labs have been updated: http://technet.microsof...

Windows 7 Support for Dell & HP

Direct links to Dell’s & HP’s Windows 7 support areas – Dell’s Windows 7 online support cente...

How to Find Your Computer Name in Windows 7

This document provides a step-by-step set of instructions on how to find your computer’s name in ...

OS X Snow Leopard

OS X Mountain Lion

Linux and Unix

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

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

grep tricks

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

Location of the sudo log file

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

Specify section number with Unix man (manual) command

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

Thin Client technology - Linux Terminal Server Project HOWTO

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

Manipulating data on Linux

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

PHP Client can break `less`

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

How to synchronize files and directories from one location to another on Unix

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

Bash scripting

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

SAS on 64b Ubuntu Linux

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

15 Basic ‘ls’ Command Examples in Linux

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

cron job examples

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

adding date to bash history command

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

Command Line Tools to Monitor Linux Performance

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

Linux scp command examples

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

Linux tee command

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

Ruby one-liner to count logins in Linux last command

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

Unix grep, find and maxdepth

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

avoiding increasing indents while pasting into vi

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

Unix Cheat Sheets and Tricks

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

Finding most recently changed files in Unix

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

vi editing notes

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

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

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

UNIX Tutorials

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

Case-insensitive searching in vi

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

Customizing vi

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

lsof, the least talked about Unix tool

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

How can I check/verify that Red Hat Enterprise Linux is up-to-date for Daylight Savings Time

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

Advantages of less over more (UNIX)

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

diff and patch

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

Reasons to Use Vim over Vi

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

Useful Commands for Vi

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

using find and chmod together in Unix

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

finding words in binary files

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

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

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

Awk Explained

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

combining unix stderr output with stdout

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

Linux performance analysis in 60 seconds

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

Windows Vista

Where can I find information regarding new/updated drivers required to run Vista?

If you’re intending to install Vista on your computers, the process will likely require the ins...

Where can I find Information regarding deploying Vista?

To download Microsoft’s step-by-step guides providing instructions for IT professionals deployi...

Wireless networking on vista doesn't get a valid DHCP IP

When trying to connect to the UCLAWLAN, the IP obtained would be 169.254.×.×. This is sign that ...

How to map Novell network drive when running Windows Vista

With the introduction of Windows Vista, mapping network drive to the Novell server without using ...

Where do I download Windows Vista language packs?

The recommended method is via Windows Update, per Windows Vista integrated help or the online hel...

Dell Optiplex GX620 systems and Windows Vista

Good news: Windows Vista natively supports all components in the typical Dell Optiplex GX620.Bad ...

Sysprep links for XP and Vista

enjoy, links that i keep handytechnet xphttp://technet.microsoft.com/en-us/library/bb457073.aspxt...

Mapping a Novell drive on Windows Vista

Change Security Policy on Windows Vista in order to map a Novell Drive. Administrative Tools Clic...

Windows Vista and Roxio causes cd-rom/dvd drive not to recognize

On certain version of Roxio Easy CD Creator on Windows Vista, the DVD drive may not be recognized...

Network Printing Problems in Vista

ISSUE 1I do not know if you have noticed, but here is another big problem with vista when humnet ...

Microsoft Enhanced Mitigation Experience Toolkit (EMET)

Microsoft EMET 5 has now been released to general availability.Could be an interesting addition f...

Mac Resources

Local Apple Store: (Free) Training sessions and Genius Bar — http://www.apple.com/buy/locator/Th...

Local System Account(NT AUTHORITY/SYSTEM) and network resource access

There comes time when a service or scheduled job running on windows machine needs access to a fol...

Install Windows on a Computer with ICH9R RAID

This solves the problem where the Windows installation will say “Cannot find IAstor.sys” during t...

Installing Mac OS X DVD media on CD only Mac

One way of installing Mac OS X DVD media on a Mac that only has a CD drive (like a G3 iBook) is t...

Symantec Ghost Solution for Image Deploying

Step by step instructions for automated install http://www.microsoft.com/downloads/details.aspx?f...

Get quick info from a remote Windows machine with WMI and Powershell 2.0

This post is meant to offer some quick and easy ways to use Powershell and WMI for System Adminis...

iTunes for Windows compatibility error

On computers that have been upgraded from Windows Vista to Windows 7, iTunes always launches with...

KMS Activation for non-domain clients

I found that Windows clients that were not part of our AD domain were not activating despite of p...

Target Display Mode

The late 2009 iMac 27" supports “video in” to turn the display into an external monitor for anoth...

File Sync Services and Software for Mac OSX

This thread start and summary from UCSC Mailing List might prove useful to others.On Friday 20 No...

Amanda backup on OS/X

Amanda backup is a solid FOSS backup solution that’s been around for ages. If you aren’t already...

Uninstalling Roxio software

Roxio Creator is a common preinstalled application on many OEM systems. You may wish to remove it...

Show/Hide Hidden Files on Mac OSX

How to Show Hidden Files on OSX Launch Terminal Type in “defaults write com.apple.finder AppleSho...

Accessing Windows drive letters under cygwin

If a drive does not have an explicit mount point configured Cygwin will default to an imaginary m...

Effect of file operations on its own and its parent directory's modification times

\ File added File modified File renamed File deleted File Y Y N N/A Parent d...

Mac OS X versions (builds) included with Intel-based Macs

It is often confusing to try and figure not only which minimum version of OS X supports a partic...

Manually resetting Windows account password

To reset account passwords in Windows without an existing administrator account privileges, there...

Opening a Unix text file on Windows

Problem: If you save a multiple-line text file on Unix (e.g. Linux) and open it on Windows, the t...

Resetting the System Keychain in Mac OS X

To reset your keychain in Mac OS X 10.4, or Mac OS X 10.5 Leopard, or later:1. Open Keychain Acce...

X11 on MacBook Pros

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

Why can't I play ram files on my mac

If you are a Mac user and you are having difficulties playing the videos posted on this site, ple...

Checking CPU load on multi-processor machines

If your machine has more than 1 CPU, the “CPU states” shown by the top(1) command shows the state...

Windows Updates don't work

If Windows Updates download but fail to install, Microsoft knowledgebase 943144 provides a fix:ht...

Burn DVD from VIDEO_TS folder (Mac OS X)

To burn a UDF DVD that plays in standalone DVD players, fire up Terminal and type the following:h...

Why Do Microsoft Products Create Those Temp Files? Everything You Wanted to Know . . .

See KB Article ID: 211632This article explains when, where, and how Microsoft Word for Windows cr...

Parallels Desktop for Mac vs. VMware Fusion Comparison

Good Article from MacTech comparing Parallels to VMware on several Mac devices. This includes vi...

Managing OS X

OS X Server’s SUS (update server) can manage OS X workstation’s updates (e.g, http://support.appl...

Bulk print multiple files at a time

If you want to bulk print a bunch of files on your computer, you can do this on Windows 7 and up....

Direct IP Printing from OS X

This document provides a step-by-step set of instructions on how to add a printer toApple OS X us...

Direct IP Printing from Windows

This document provides a step-by-step set of instructions on how to add a printer to Microsoft Wi...

macOS High Sierra

Apple’s High Sierra is coming. Below are some links to help prepare for it—Upgrade to macOS High...

How do I find the host name of my computer?

Windows Machines (using the command prompt): From the Start menu, select All Programs or Programs...

How to Change your Windows Domain Password on Citrix

This document provides a step-by-step set of instructions on how to change your domain password o...

Windows Password Expiration

Your Windows domain password will expire on a regular basis, as defined by your department’s pass...

How to Change your Windows Domain Password

This document provides a step-by-step set of instructions on how to change your domain password o...

HostExplorer Hummingbird crashes when opening

If you receive an error message “HostExplorer for Win32 (or Win64) has stopped working”Download t...

Chkdsk ("Check Disk") in Windows 8

Windows 8 has redesigned the venerable “chkdsk” tool. The tool has a new approach to disk health...

OS X installation failure due to incorrect system date

“This copy of the Install OS X Mavericks application can’t be verified. It may have been corrupte...

Hummingbird HostExplorer Full Screen Mode

In Hummingbird HostExplorer for Win32, full-screen mode “hides the title, menu and tool bars, so ...

OS X Mavericks Resources

Here are some useful links to some technical information surrounding today’s OS X Mavericks relea...

Missing file extensions causing errors with files opening in OS X

OS X by default hides file extensions on files, so users may be confused when they have files tha...

Making Screenshots in Windows

In Windows, most users are at least familiar with the “Print Screen” button, which copies the ENT...

Files, File Types, File Extensions, and Folders

File – A computer file is a way to store information on a computer so it can be used later, and p...

Mac Word Crashing

Users of Microsoft Word for OS X may notice frequent program crashing and instability. Mac Word’...

Changing column width in Finder (Mac OS X)

To adjust the width of all columns in a Finder window, hold the Alt/Option key down while draggin...

Paste and Match Style on Mac

On the Mac, the paste function associated with the ⌘V (Command + V) keyboard shortcut has a side ...

Mac OS X - Energy Saver preferences won't save

Log in as an admin, run the following commands from Terminal:sudo rm /Library/Preferences/SystemC...

Mac OS Applications folder slow to load / populate

As mentioned in https://discussions.apple.com/thread/2730568?start=0&tstart=0, either deleted...

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

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

Windows Remote Desktop (RDC) from OSX/Mac

These are two primary clients used to connect to a Windows Terminal Server (Remote Services) or a...

Switching between Operating Systems in Mac

Choose OS while starting upYou can select which operating system to use during startup by holding...

How to view DBDesigner4 documents in Mac OS X

Unfortunately, DBDesigner4 is written in Delphi, which is practically Windows-only, so there is n...

How do I install Ant on Mac OS X?

Installation of Ant on OS X is a solid walkthrough. It not only walks you through the Unix comma...

"decompressor are needed to see this picture"

The “… decompressor are needed to see this picture” problem often comes up for us when Mac create...

PcAnywhere 11 giving you errors at the login screen?

On the Windows taskbar, click Start > Run. The Run dialog box appears. In the Run dialog box, ...

How do I open an EPS file using GIMP in Windows?

The following works for Gimp 2.2.10, Ghostscript 8.54, and Windows XP: Install Gimp and Ghostscri...

Is there a way to create virtual desktops in Mac OS X?

Virtal desktops are a convenient way of organizing your program windows. You can “switch” desktop...

How To Backup Your Mac Intelligently

Here’s a detailed approach to backing up your Mac. Please feel free to add other solutions or ap...

How to create dual boot Mac OS X and Windows XP on the Mac Book Pro using boot camp

For general information and requirement:http://www.apple.com/macosx/bootcamp/For boot camp instal...

What do I do if I get an "Unmountable Boot Volume" Error during windows startup?

Cause:1. This issue can be caused by a corrupt boot.ini file.2. This issue can also be caused by ...

Unable to run windows update or MS Office update

If you are unable to run Windows Update or MS Office update (e.g: installation failed). A quick c...

Double clicking on a drive letter opens a search screen

Here’s an interesting problem.When double clicking on a drive letter (such as c:), instead of sho...

Printing to Window's Shared Printers from OSX (across workgoup or domain)

Took a while for me to get this process down, so hopefully the below saves you some time.1 – Set ...

My hard disk crashed, What should I do?

Contact your local support personnel. A technician can remove your hard disk and run various dia...

My display is upside-down (turned 90 degrees to right or left).

Some integrated Intel graphic cards (common on Dell Optiplexes) allow you to flip your display 18...

Advice when switching from Windows to Apple

When switching from Windows to Apple (OS/X) there are some hints and tips that can make it easier...

What is SAFE MODE in Windows?

Safe Mode is a special diagnostic version of Windows that bypasses some Windows startup files. If...

What is the IP Address of my computer?

For Windows 2000/XP/2003 Click on the Start button Select Run Type “cmd” or “command” Type “ipcon...

How do I create a shortcut in Windows?

In Windows, a shortcut is an icon used to represent a document, folder, or program file. You can ...

What is a daemon?

In UNIX, a Daemon stands for Disk and Execution Monitor. A daemon is a long-running background pr...

Simple Way to Lock Your Computer

Simple way to lock a Windows computerYou can create a desktop shortcut that will lock your comput...

Sharing a Printer from XP Box to MacOSX Box

On the WinXP Box:Add the TCP/IP print server serviceLog in with Administrative privileges.Click S...

How do I use apt-get to install some "testing" packages into a Debian "stable" system?

If you’ve found yourself wanting to run a Debian stable system but you have a burning need to use...

How to Create a New PDF Document

These are the basic ways that you can do this:The Easiest Way (on most applications)1)Go to File ...

How can I type foreign language characters?

Mac OS XCourtesy of Indiana University’s Knowledgebase, here are instructions for typing foreign ...

What are some common processes in Windows Operating System?

FILENAME: Explorer.exe.PROGRAM NAME: Windows Explorer.DESCRIPTION: Microsoft’s Windows shell.FILE...

Basic Troubleshooting Tips for Personal Laptops and Campus Internet Connections

This article is to give you a general (and basic) guide of how to troubleshoot your laptops when ...

Automatically skip "Compress Old Files" when doing Disk Cleanup in 2000 or XP

When running ‘Disk Cleanup’ on a Windows 2000 or XP workstations, you may have notice that it pau...

Assigning permanent location for a USB drive

Windows will assign USB drives the first available drive letter when they are detected. If you h...

Print Screen Fixes

Print screen has saved me many times in various cases. Its a feature that you should know if you...

svchost.exe - application error

You get the error: svchost.exe – application error the instruction at “0×745f2780” referenced mem...

Apple Remote Desktop

On Mac OS 1.4, there is the option to turn on ‘Apple Remote Desktop’ under the Sharing system pre...

How can I compare text files in Windows?

Some Windows machines come with a basic comparison tool from Microsoft named windiff.exe. If you...

Stuck CD/DVD in Macbook Pro

So I was installing Windows Vista on a 15" Macbook Pro using Bootcamp. Everything was proceeding...

Mac OS X Keyboard Shortcuts

Ever forget that Mac OS X keyboard shortcut to quickly move to the end of a line or document? He...

How to take screenshots in OS X

Quick answer: http://take-a-screenshot.org/ (different tabs for different systems)Use these short...

How to install OS/X remotely

The following was passed to me verbatim by a professor in my area. I haven’t tried it yet myself....

How do I clear a stuck print job after trying to cancel it from system tray?

Try this: Click Start → Run Type “CMD”, then click OK Type “net stop spooler” and press enter to ...

MacBook waking while lid is closed

“If you have ever had your MacBook or MacBook Pro inexplicably wake while the lid is closed, ther...

What are the options for running Windows and OS X on an Intel Mac?

As of now there are two truly viable options for running Windows XP on the new Intel Mac computer...

What is Trusted Computing?

An interesting (if you like technical) article excerpted from Amit Singh’s book, “Mac OS X Intern...

Microsoft Volume Activation 2.0 Notes / Q& A

I attended the MS Live Meeting (10/27/2006) regarding the new Volume Activation 2.0 which will be...

How do I manage Windows user accounts?

Windows gives you two different ways to manage users on a machine. For either of these methods to...

I am trying to install application X. Why is the installer attempting to setup a totally unrelated application?

When attempting to install Eudora or another application that uses a Winzip self-extracting insta...

Turn off Automatic Search for Network Printers

I not really want to see all the network printers on my subnet, especially the ones that do not b...

Making Windows Run Faster

There are so many things that can slow a PC — excessive software, insufficient resources (hard dr...

Which port does Apple's Remote Desktop use?

Apple’s Remote desktop uses PORT 3283.

How to enable Remote Desktop through Registry or GPO

If you have ever been remote and cannot connect to a computer/server and need to have remote desk...

Windows Explorer Startup Options

A number of times the following shortcut has proven helpful to force Windows Explorer to open a s...

How to not set a file/application association in OS/X?

In OS/X does anyone know how to not set a file/application association? I have both FileMaker and...

Apple OS/X Hex Editor

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

Moving from Hummingbird v8 to V9? Got some errors?

Some errors have popped up when trying to access models once you upgraded to version 9 of Bi/Quer...

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

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

How do I reset a user's password in Mac OS X?

If a user forgets their password in Mac OS X, you can use the install disc to reset ANY of the us...

HP Elitedesk 800 G4 WDF_VIOLATION error

HP EliteDesk 800 G4 systems may experience a BSOD upon startup after the installation of Windows ...