The command 'cipher' calls a program that is integrated with Windows that can encrypt-decrypt files.
cipher
The Del or Erase command in command prompt.
Cipher
cacls
Yes you can put command prompt on a USB. I tried it out. Al you have to do is copy and paste it, just like other files. It was only 2 KB.
io.sys msdos.sys command.com
Yes, you can use free file encryption software to encrypt files for free.Winrar, TrueCrypt and Kakasoft Folder Protector all allow you to encrypt files for free.
Command processor in windows is the command prompt(cmd). To start Windows command processor use winkey + R this will open Run window.Just type in cmd and this will open command prompt of windows where you can run various commands.You can create,delete files and folders, list the directory contents and can perform many other functions in command prompt.
If you have an antivirus program, you have that option when initializing that program to run. No reason to do it from the command prompt. The Command Prompt is only used when there are systems needed to be accessed for maintenance or system changes that need to be done within the "shell" of the OS. command is sfc /scannow
Batch files(.bat) open in command prompt(cmd). They can be edited in notepad or an equivalent text editor.
You can easily see it as it looks like the normal file.
To Copy files, Rightclick it and click Copy, or press CTRL + V. Same for folders. For Command Prompt... A=copy C:\System32 (OR) copy C:\System32. To open Command Prompt, open your Start menu, type cmd. This should open it.