How to use wildcards to apply limits In Linux
We had seen the one domain as the * (asterisk). To apply the limit to the whole system, we can use this wildcard domain. Here is an example with a wildcard to apply limited number of logins on the system.
* - maxsyslogins 20
After applying this limit, the maximum number of logins to the system is 20.
limits.conf File To Limit Users, Process In Linux With Examples
Linux gives full control over the system. In this article, we are going to learn about the file limits.conf. limits.conf is a configuration that is used to limit the resources to the user, groups. Now let’s understand the file structure of limits.conf and how can we use the limits.conf to limit resources to the user. Before moving further, note that to edit this file, you must have root permission.
The complete path of the limits.config is :
/etc/security/limits.conf
pam_module is a module that uses ulimit command to apply limits from limits.conf file.
The basic syntax of the limits.conf file is :
<domain><type><item><value>
Now let’s understand each field one by one