How to view user login logs on Bricklayer VPS?

VPS users who often use the Linux system will definitely check the user login log, especially some developers. There are two types of logs to record user login behavior, namely recording the user's data and recording the user's login behavior. Login time, this article introduces several commonly used user login log query methods in Linux.

1. lastlog lists the last login information of all users

lastlog refers to the content in /var/log/lastlog and will display the login name, port number (tty) and last login time. Note that you need to run this command as root.

Bash

Command parameters:
-b: Display login information before the specified number of days
-t: Display login information since the specified number of days
-u: Display the latest login information of the specified user

2. Last lists the information of users who have logged in to the system

last can view the user information logged into the system. By default, the /var/log/wtmp file information is read. You can also read the specified file through the -f parameter.

Bash

echo > /var/log/wtmp
#Clear successful login information

The last command is best used in conjunction with the filter command and is also highly recommended.

3. lastb lists failed login records

The lastb command is similar to the last command above. It lists the login information of users who failed to log in. By default, it reads the /var/log/btmp file information. The command example is as follows:

Bash

lastb |less
lastb |grep [filter parameters]
#Clear login failed logs
echo > /var/log/btmp

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Plan	Memory	CPU	Hard disk	Traffic/month	Bandwidth	Computer room	Regular price	New Year's Price	Buy
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TOKYO	4GB	4 core	80GB	1TB	1.2Gbps		$155.99/month $1559.99/year	$136.93/month $1369.36/year	Buy

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