[mysql@db1 tf]$ mysql  
Welcome to the MySQL monitor. Commands  end  with  ;  or g.  
Your  MySQL connection id is  2  
Server version:  5.6.20  Source distribution  
  
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affiliates.  Other names may be trademarks of their respective  
owners.  
  
Type  'help;'  or  'h'  for help.  Type  'c' to clear the current input statement.  
  
root@localhost:(none)>  
  
root@localhost:(none)>use mysql;  
Reading table information for completion of table and column names  
You can turn off this feature to get a quicker startup with  -A  
  
Database changed  
root@localhost:mysql>

OptionDescription  
Option    Description
/c    A counter that increments for each statement you issue
/D    The full current date
/d    The default database
/h    The server host
/l    The current delimiter
/m    Minutes of the current time
/n    A newline character
/O    The current month in three-letter format (Jan, Feb, …)
/o    The current month in numeric format
/P    am/pm
/p    The current TCP/IP port or socket file
/R    The current time, in 24-hour military time (0–23)
/r    The current time, standard 12-hour time (1–12)
/S    Semicolon
/s    Seconds of the current time
/t    A tab character
/U    

Your full user_name@host_name account name
/u    Your user name
/v    The server version
/w    The current day of the week in three-letter format (Mon, Tue, …)
/Y    The current year, four digits
/y    The current year, two digits
/_    A space
/     A space (a space follows the backslash)
/'    Single quote
/"    Double quote
//    A literal “/” backslash character
/x    x, for any “x” not listed above