History command Usage

history shows command histories

Introduction:

Display the command history list by number, add each command history to the newest entry, continuous N the same command shows only one bar

"Built-in Commands"

Command History file : ~/.bash_history

Login Shell , the command that is recorded in the command history file is read: ~/.bash_history

Login into Shell The newly executed commands are only recorded in the cache, and these commands are "appended" to the command history file when the user exits;

Main parameters:

-A manually append command to the command history file

-D Delete the command history cache for the specified number

-C Empty command history cache

-W manually writes the command history cache to the history file

Quick action:

!! executes the previous command

! # Call history in the execution history of the # # Command

! -# Call to execute history in the penultimate # command History

! string: Call a command that starts with string

Esc. call the arguments of the previous command

ALT +, call the arguments of the previous command

!$ calling arguments to the previous command

Environment variables:

command history file $HISTFILE

command History cache size $HISTSIZE

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History command Usage