Linux under the history command little note

1,histtimeformat display user name and time

# export histtimeformat= "' WhoAmI '%F%T"

# History | Tail

1032 Root 2015-05-28 13:57:22 ll

1033 Root 2015-05-28 13:57:26 pwd

2,histsize Total Row count of the control history command

# Export histsize=2000

# Export histfilesize=2000

Histsize

Defines the number of records for the history command output

Histfilesize

Defines the total number of records to save a command in file ~/.bash_history

3,histfile changing the history file name

# Export Histfile=/root/.root_history

4,histcontrol clear successive duplicates in the history command

# Export Histcontrol=ignoredups

5,histcontrol clear duplicate entries in the entire command history

# Export Histcontrol=erasedups

6, clear all command history using the-C option

# history-c

7,histignore ignoring specific commands in history

# Export histignore= "pwd:ls:ls-ltr:"

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Linux under the history command little note