change the working directory

directory
       An absolute or relative pathname of the directory that shall become the new working directory. The
       interpretation of a relative pathname by cd depends on the  -L  option  and  the  CDPATH  and  PWD
       environment variables. If directory is an empty string, the results are unspecified.

-      When a hyphen is used as the operand, this shall be equivalent to the command:

       cd "$OLDPWD" && pwd

which changes to the previous working directory and then writes its name.

Commands separated  by  a ; are executed sequentially; the shell waits for each command to terminate in turn.  The
return status is the exit status of the last command executed.

move (rename) files

Rename SOURCE to DEST, or move SOURCE(s) to DIRECTORY.