Linux, Ubuntu, Debian, Mint, CentOS Tutorials
Linux is a file-based operating system that contains a lot of files. Linux generally prefers simple text files for configuration and different purposes for its simplicity and ease to read and write. But how can I count lines in Linux? What Is Line In Linux? A file consists of some data which can be a … Read more
Directories or folders can contain multiple files and directories. These multiple files and directories use some disk space and have a size. But when we list the files and directories we see that the directory size is listed as 4096 bytes or 4KB. This is the directory standard size which does not contain the files … Read more
TTY or Tele Type Writer is a device that is used to provide input into the destination system. TTY is a generic term that is used for different hardware and software for different systems. TTY History First TTYs are created in the 1830s with the name of teleprinters. Teleprinters were hardware devices that are used … Read more
SSL/TLS is used to encrypt and make secure HTTPS connections. While using the HTTPS web pages with the curl command you may get some SSL/TLS related warnings or errors. Experienced users generally look for –no-check-certificate option which is provided for wget to skip SSL/TLS certification checks. The curl command provides the -k or –insecure options … Read more
The curl command is used to get different resources over different protocols like HTTP, HTTPS, FTP, LDAP, IMAP, etc. One of the most popular use cases for the curl is the HTTPS protocol. HTTPS is the secure version of the HTTP protocol where the data is encrypted and the HTTPS server is identified with an … Read more
The rsync is a command-line tool that is used to copy and synchronize files and folders over the network connection. It is very fast and versatile which makes it from other command-line tools. The rsync tool provides a lot of features for sync and copy operation where one of them is excluding files and directories. … Read more
The modprobe command can be used to load ad unload modules for the Linux kernel. By default the kernel modules are loaded and removed automatically by Linux. But this may not work in some cases or not suitable. modprobe Configuration Files Kernel modules are configured with diffrent configuration files. These configuration files used to load, … Read more
Linux command-line interface or bash is one of the most strong and popular parts of it. A regular system administrator spends a lot of his time on the terminal and types a lot of commands. Daily operations generally repeat where previously executed commands are generally executed again and again. The history command is used to … Read more
Linux user authentication is done with the shadow password file. the shadow password file is configured with the login.defs configuration file which is located under the /etc. This file provides configuration like password maximum days, password minimum days, etc. In this tutorial, we will examine the /etc/login.defs configuration file and different configurations. Mail Storage Directory … Read more
Linux is a file-based operating system where everything is a file. As a file-based operating system, there are a lot of tools and commands related to the files. The lsof command is used to find a list of opened files by a process. The name lsof comes from “LiSt of Opened Files”. The lsof command … Read more