Use history Command-history

Bash saves the history of commands used. The history of these commands is stored in the. bash_history file of the user's main directory.

Introduction

Bash saves the history of commands used. The history of these commands is stored in the. bash_history file in the user's main directory.

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Search for history commands

You can run the following command to view the history content list:

[Root @ allyes20121031 de_info_center] # history | less

1 [13:59:13] cd/www/de_info_center

2 [13:59:14] ll

3 [13:59:59] cd ..

4 [14:00:02] cd de_info_center

5 [14:00:03] pwd

6 [14:16:58] ps-A | grep "de_info"

7 [14:17:01]./de_information_center

8 [14:17:11]./de_information_center start/www/de_info_center/de_information_center_config.txt

9 [14:17:14]./de_information_center

(END)

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Use! Row number

Assume that the command 2 [13:59:14] ll is found. We can use it! 2, to quickly use the command for this line.

[Root @ allyes20121031 de_info_center] #! 2

Ll

Total 2660344

-Rw-r -- 1 root 2594 May 15 13:05 argv. cpp

-Rw-r -- 1 root 1296 May 14 argv. h

-Rw-r -- 1 root 5001 May 13 config. cpp

-Rw-r -- 1 root 5382 May 13 13:56 config. h

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More history extensions

!! : Repeat The Last Command.

! Row number: execute the command line n in the record.

! String: repeat the recent historical commands starting with string.

!? String: repeat recent historical commands that contain strings.