# xsel > Selection manipulation tool. > For example, xsel can copy STDIN to clipboard, or print clipboard to STDOUT. - Clipboard selection: `-b or --clipboard` - Primary selection: `-p or --primary` - Secondary selection: `-s or --secondary` - Copy output of a command into the clipboard: `echo 123 | xsel -bi` - Copy contents of a file into the clipboard: `cat {{file}} | xsel -bi` - Print the clipboard to STDOUT: `xsel -bo` - Print the clipboard into a file: `xsel -bo > {{file}}` - Clear the clipboard: `xsel -bc`