... cat Command to join two files into one $ cat filename1 filename2 > file3 This example joins filename1 and filename2 files into filename3 file. Note – If filename3 is existed, this command will ... format for the redirection of standard input, standard output, and standard error is: command > file or command >> file command < file command 2> file Angle Brackets ( >, <, ... existing files using the touch command • Create and remove directories using mkdir and rmdir • Manage files and directories using the mv, cp, and rm commands • Save the output from a command into a file...