Get a DELL Service Tag on the remote Linux system

dmidecode -s system-serial-number

WinXP: Restore a lost wallpaper from cache

actually, a cache of the current wallpaper bitmap stored here:

"C:\Documents and Settings\-User Name-\Local Settings\Application Data\Microsoft\Wallpaper1.bmp"

Remove an access list from ASA(PIX)

To clear an access list from the running configuration, use the clear configure access list command in global configuration mode.
clear configure access-list [id]

How to remove a pre-login wallpaper from Windows Home Server

Run Regedit and go there:
HKEY_USERS\.DEFAULT\Control Panel\Desktop
Remove the "Walpaper" key

umount NFS filesystem fails in Linux

there is a good example how to umount dead NFS share (let's assume that umount -f / doesn't work.

Quick fix to this problem is editing /etc/mtab file and removing the nfs filesystem mount point . In Linux /etc/mtab file contains all local and nfs mounted filesystems.By editing /etc/mtab i was able to umount hanged nfs filesystem on my Linux machine without doing a reboot.

Finally to resolve
failing nfs mount issue i commented the entry in /etc/mtab file :
#sun:/export /mnt/nfs nfs rw,addr=192.168.0.135 0 0.

Chuck Norris and IT

• The system works because Chuck Norris tells it to work
• Chuck Norris doesn’t need a test suite. The test suite needs Chuck Norris.
• CPUs run faster to get away from Chuck Norris
• Chuck Norris normalizes all schema just by inserting random data
• Chuck Norris can compile syntax errors
• Packets travel faster than the speed of light for Chuck Norris, but he can still catch them
• Chuck Norris has Internet 3
• Check Norris can parse invalid XML
• Chuck Norris can break Moore’s Law
• Chuck Norris can fix everything without changing anything.

How to find the user / entity an email address is associated with in Exchange 2003

• Open the Acive Directory Users and Computers Management Console
• Right Click on the domain > Select Find
• Select Custom Search in the Find field
• Select the Advanced tab
• To find the entity with the email address spamtrap@danlance.co.uk for example, enter the following in the LDAP query field: (proxyAddresses=smtp:user@somain.com)
• This will list the entity containing the email address entered.
  
  Wild cards can be entered within the email address (*) to return multiple matches.
  If you want to view all the email addresses within the results list, select View -> Choose Columns... and select Proxy Address - doing this in assoication with the query (proxyAddresses=smtp:*@somain.com) will give you a list of all entities within the organisation that have an email address, together with all the email addresses they have.