Windows Command Line Tips

Command to determine location of program in command prompt
Description from where /?
Displays the location of files that match the search pattern.
By default, the search is done along the current directory and
in the paths specified by the PATH environment variable.
Example:
C:\Program Files (x86)\Microsoft Visual Studio 12.0\VC\bin\amd64
> where ildasm
C:\Program Files (x86)\Microsoft SDKs\Windows\v8.1A\bin\NETFX 4.5.1 Tools\x64\ildasm.exe

Copy command output to clipboard
dir | clip

Delete all folders within a folder (Windows XP)
FOR /D %f IN ("C:\MyFolderWithOtherFolders\*.*") DO RMDIR /S /Q "%f"

Delete all folders within a folder (Windows 7, Windows Server 2008, Windows Vista)
forfiles /s /p "C:\MyTestFolder" /c "cmd /c if @ISDIR==TRUE RMDIR /S /Q @PATH"

Forfiles
This is a utility for selecting files and executing a command on them. Applies To: Windows 7, Windows Server 2008, Windows Vista.

Examples:

Display all subfolders
forfiles /s /p "C:\MyTestFolder" /c "cmd /c if @ISDIR==TRUE echo @PATH @ISDIR"

Delete all files older than 30 days:
forfiles /p "C:\MyFolderWithFiles\" /s /m *.* /d -30 /c "cmd /c del @path"

See "Forfiles." Resources and Tools for IT Professionals | TechNet. N.p., n.d. Web. 8 Oct. 2012. <http://technet.microsoft.com/en-us/library/cc753551(v=ws.10).aspx>.

Open IIS Manager at a command prompt

1. On the Start menu, click Run.
2. In the Open dialog box, type inetmgr, and then click OK.

See

"How To: Open IIS Manager." MSDN | Microsoft Development, Subscriptions, Resources, and More. Web. 14 July 2010. <http://msdn.microsoft.com/en-us/library/bb763170.aspx>.

Commands to Display/Remove Read-Only Attributes
REM Displays files with read-only attributes set in specified directory and all subdirectories.
dir /ar /s

REM Clears the read-only file attribute from matching files in the current folder and all subfolders.
attrib -r /s

Command Line to Lock Computer (Windows 7, XP)
rundll32.exe user32.dll, LockWorkStation

Updates

2015-02-13 Added "Command to determine location of program in command prompt"

2013-08-02 Added "Copy command output to clipboard"

2012-10-08 Added "Forfiles"

2011-08-25 Added "Delete all folders within a folder"

2011-03-04 Added "Command Line to Lock Computer"