How-To

Howto: Generate Many Files of a Particular Size in Windows

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I was recently performing some performance testing that required me to copy many files of a particular size from one Windows workstation to a Windows file server. I had a heck of a time figuring out how to batch generate the test files. Finally I came across the fsutil tool, which is included in all […]

Howto: Change the IP Address of a Dell 4/P DRAC from the Command Line Without Rebooting

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Normally you configure a Dell Remote Access Card (DRAC) when a server is initially commissioned. Once the card is set, administrators rarely if ever need to modify the settings. If you do need to change the settings, the server needs to be restarted so the DRAC BIOS can be modified, which obviously results in system […]

Howto: Test IMAP Mail Server Availability Using Telnet

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From a command prompt, initiate a connection with the mail server.  Use port 143 for IMAP, port 993 for seucre encrypted IMAPs: telnet 192.168.1.60 143 Authenticate to the IMAP server, specifying username and password: A LOGIN username password Chose a folder: 01 Select INBOX Display  a message using rfc822 specifications.  Here message number 13 is listed: […]

Howto: Mount a USB Device in SuSE Linux

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I have a Kingston USB flash drive that does not automatically mount itself on my SLES server on occasion.  TID 7000951 explains how to mount the drive manually: 1) From a terminal, run: lsmod |grep usb  make sure usb_storage is loaded.  If it is not, run: modprobe usb-storage 2) Plug the USB device in and run […]

Howto: Uninstall Adobe Flash Player from the Command Line

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It seems like Adobe is releasing new Flash Players on a regular basis to deal with security issues.  It’s important to remove old versions of Flash Player prior to installing the new version.  Otherwise, you’ll keep remnants of the vulnerable versions on your system. Here’s a very simple way to uninstall your previous version of […]

How to Export 3com 4xxx Family Switch Configurations to a Text File for Backup and Change Management

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I have been using RANCID to monitor my Cisco routers and switches for changes to their configurations.  If you’re not familiar with RANCID, linuxhomenetworking.com has a very detailed tutorial that shows how to setup RANCID on Fedora Linux. I was hoping to use RANCID to monitor for changes to my 3com 4050 and 4060 building […]

How to Remotely Disconnect a Terminal Services Session

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Windows server 2000/2003 allows two remote terminal services connections for administrative purposes.  Every once in a while I’ll get the “You exceeded the allowed connection count” message when trying to connect to a server via RDP, because previous sessions were not disconnected correctly. You can use either of the following methods to remotely disconnect Terminal Server sessions. Method […]

How to Change the SQL sa Password from a Command Prompt

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To change the SQL sa password from a command prompt: Start a command prompt by typing Start – Run – cmd Enter the following commands, pressing Enter after each line OSQL -S yourservername -E     1> EXEC sp_password NULL, ‘yourpassword’, ‘sa’     2> GO Where yourservername is the name of your server and yourpassword is the new […]

Howto: Use the Windows Debugging Tools to analyze a crash dump (BSOD)

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Occasionally, my Windows XP SP2 laptop has had the Blue Screen of Death appear unexpectedly. It doesn’t occur when any particular application is running, and nothing ever is written to the event logs. Of course I’m never at the computer when this happens, so I haven’t been able to see what messages and parameters are […]

Howto: Disabling Driver Signing in Windows Vista 64 bit

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A security feature of Windows Vista 64 bit version is that unsigned drivers will not load. I’m all for increased security, until I run across a piece of hardware that does not have signed drivers. It was easy to disable driver signing before two updates were released. From an elevated command prompt I ran bcdedit […]