Guest Post by my Friend Abhishek…
This is an excellent post which can really make your life easier in the *NIX world. But, for many, it is a Windows kind of life. So, for those of you out there, I have put together some Windows command line tricks that might make your life easier.
dir *.ext /s /b > files.txt
This command line will create a file called files.txt. When you open this file, there will be a complete list of all the files in that directory and all subdirectories with the .ext extension. You can then open up this text file in any text editor and work this the information.By changing the ext part, you can select different files. For example, if you wanted to list all of the PDF documents, you would type:
dir *.pdf /s /b > files.txt
This will retrieve a pile of information about your network connection and IP information. From this command, you can get:
It can be very useful when troubleshooting to know what drivers are installed on a system. This command will give you a complete listing of the drivers and when they were installed.
This will fire up the Wireless Link dialog so that you can copy the specified file via an infrared port.
If you are running a system and you want to know who has files open on your computer, this command will provide you a list of those users and the files that they have open.
Note: If you get an error saying The system global flag ‘maintain objects list’ needs to be enabled to see local opened files, you can fix this issue by typing
openfiles /local on. You will have to reboot the system but it will resolve the issue.
netstat -a 30
This will show you all of the TCP/IP ports that are being used on your system and what they are connecting to (or being connected from). It will continue to monitor these ports and refresh the information every 30 seconds. You can change the refresh rate by changing the number at the end of the command.
If you have a disk with damaged sectors, you can attempt to recover as much information as possible from the damaged file. Data that is not damaged can be retrieved but data in damaged sectors will be lost.
rexec remotePC defrag C: /F
This command used the rexec command to force a defragment of the C: drive on the computer named remotePC. You can use whatever you want to for the command (I just used defrag C: /F as an example). This is very useful for remote maintenance.
With this command, you can retrieve the following information:
schtasks /create /tn "Defrag C" /tr "defrag c: /f" /sc daily /st 23:00:00 /ru "System"
This will set your computer to automatically perform a complete defrag of the C: drive each day at 11:00:00 PM (23:00:00). It does this by creating a scheduled task called Defrag C. It will run this command under the computer’s system account.
subst W: C:windows
Sometimes, your directory structure can get pretty deep and complicated. You can simplify this a bit by mapping a drive letter to commonly used folders. In the example that I have given, this will create a drive letter W: and map it to the C:windows directory. Then, whenever you go into My Computer, you will see a W: drive and when you browse to it, it will automatically take you to the contents of the C:windows folder.
You can do this with any unused drive letter and any folder that exists on your system.
It’s always good to know what is running on your system. This is the command line version of the processes tab in Taks Manager.
taskkill /im programname.exe /f
If, when using the tasklist command, you discover that there is something running you just want killed. This is the way to do it! Just note the program name and use it in place of programname.exe.
shutdown -r -f -m remotePC -c "System will be rebooted in 20 seconds"
Sometimes, you just need to reboot a system. This will do it remotely and give the user a 20 second warning.
Tip : To open Command Prompt, click Start, click Run, type cmd, and then click OK.
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