Hello Geeky, so today we are focusing on How to Use Command History on Linux. So please read this tutorial carefully so you may comprehend it in a better helpful way.
Guide: How to Use Command History on Linux
All our controls are currently running on Linux. In Linux, there is a very special command to show you all the last commands that have been out of use. The command is called history, yet you can get the same by placing gander in your .bash_history in it. home folder. By default, the command prompt will show you the last 500 commands you entered.
Alongside these lines, today we will check a command which allows us to view all the commands already used and use them again. By the title, you would have thought carefully about what the order was, wasn’t it?
First, the historical order is not the actual order. You can see this for yourself by seeking authority on your system:
$ view history which: no history in (/ usr / local / bin: / usr / bin: / bin: / usr / games: / usr / local / sbin))
Your computer cannot detect the command line because it is a subject built into your shell. Because it is written in the shell you are using, there may be differences in how the story behaves depending on whether you are using Bash, tcsh, Zsh, dash, fish, ksh, and so on. This thing is based on the historical Bash implementation, so some functions may not work in other shells. However, most basic functions are the same.
To view history in action, open a terminal program on your Linux installation and click:
Here is my response:
1 clear 2 ls -al 3 sudo dnf update -y 4 story
History command shows a list of commands entered from the beginning of the session. The joy of history is that now you can repeat any of them using the following command:[[[[
Command! 3 quickly tells the shell to repeat the command on line 3 of the story list. I can also access that command by typing:
$! sudo dnf
This sells the script to find the final order that matches the template you provided (in this case, that template is dnf) and execute it.
You can also use the history to recreate the last command typed by typing !!. By linking it to the grep, you can find commands that match the word process or, by using it with the type, you can find the last few commands you made. For example:
$ story | grep dnf 3 sudo dnf update -y 5 stories | grep dnf
$ story | type -n 3 4 story 5 story | grep dnf 6 story | ìrù -n 3
Another way to go about this search function is by pressing Ctrl-R to call the frequent search of your command history. After typing this, the arrow changes to:
Now you can start typing a command, and the corresponding commands will appear for you to activate by pressing Back or Enter.
Change the command that works
You can also use history to repeat a command with different syntax. You can review history with history. For example, if I want to change my previous command history | grep dnf to history | grep ssh, I can monitor quickly:
$ ^ dnf ^ ssh ^
The command also works, but with dnf replaced by ssh. In other words this command works:
$ story | grep ssh
There may be times when you want to remove some or all of the commands in your history file. If you want to delete a specific command, type history d
The history file is stored in a removable file, as well. Bash shell users find in them home liana bi .bash_history.
Guide about How to Use Command History on Linux
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