[root@linux ~]# history [n]
[root@linux ~]# history [-c]
[root@linux ~]# history [-raw] histfiles

Parameters：

-n  ：number, meaning ' the n command to list the most recent list ' means!

-c  ：All the history in the current shell delete all content

-a  ：Will be added into the history currently added instruction in histfiles, if not histfiles, then the default write ~/.bash_history

-r  ：To read the contents of histfiles to the current shell history of memory;

-w  ：Current history memory contents will be written in the histfiles!


[root@linux ~]# !number
[root@linux ~]# !command
[root@linux ~]# !!

Parameters：

 number ：The number command execution；

command ：Instruction by the recent search forward 'command at the beginning of the string for the command' of the instruction, and execution；

    !!    ：excute the last command (corresponding to the ↑ key, press Enter)；

Example：

[root@linux ~]# history
66  manrm
67 alias
68  manhistory
69 history
[root@linux ~]# !66  <==excute the 66 command
[root@linux ~]# !!  <==excute the last command，In this case, that !66
[root@linux ~]# !al <==Executive recently as the beginning of the 'al' (listed in the top 67)