Learn UNIX

If you’re just beginning to work on a Unix system, the abundance of commands might prove daunting. To help orient you, the following lists present a small sampling of commands on various topics.
Communication                                                                              File Management
ftp : File transfer protocol.                                                cat: Concatenate files or display them.
login : Sign on to Unix.                                                     cd : Change directory.
mailx : Read or send mail.                                                chmod : Change access modes on files.
rlogin : Sign on to remote Unix.                                        cp : Copy files.
talk : Write to other terminals.                                          csplit : Break files at specific locations.
telnet : Connect to another system.                                   file : Deter mine a file’s type.
vacation : Respond to mail automatically
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