This Command Line icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,600 icons, all in the same style and quality.
This is a command line symbol from the Microsoft Windows Operating system. There is a rectangle with a line horizontally through the top to create a header look. Inside the rectangle is the letter C followed by a semi colon and then a forward slash.