File SecurityIn Red Hat Enterprise Linux (RHEL), file security is managed through a system of permissions and ownership. Each file and directory has associated permissions that determine who can read, write, and execute them. These permissions are defined for thr...Mar 24, 2024·17 min read
I/O | Filters | Basic Unix Tools | Compression & Archiving |Regular Expression | VI editorI/O Redirection I/O redirection in Linux refers to the process of changing the input or output of a command or program. In Unix-like/Linux operating systems, I/O redirection is commonly used in the command line to manage input from and output to fil...Dec 31, 2023·55 min read
Shell ExpansionShell A shell is a command-line interface that acts as an intermediary between the user and the operating system kernel. It takes commands from the user, interprets them, and then sends them to the kernel for execution. In simple terms, a shell is li...Dec 2, 2023·17 min read
Working With FilesManaging Files 1. Linux: Everything Treated as a File In Linux, everything, including devices, directories, and processes, is treated as a file. This abstraction allows a consistent interface for interacting with diverse entities in the system. ...Dec 2, 2023·6 min read
Working with Directories:Manage Directories cdCommand: Used to change the current working directory. Example: cd /path/to/directory. pwdCommand: Prints the current working directory. Example: pwd. ~(Tilde): Represents the home directory of the current user....Dec 2, 2023·3 min read
Linux Interface & Getting help from Manual PagesLinux Shell Interface Root User:- [root@localhost ~]# root -----> root/admin user localhost---> Serverhostname [/etc/hostname] ~ --------> Home Directory # --------> Root/Super user prompt Normal User:- [user@localhost ~]$ user -----> username loc...Nov 29, 2023·5 min read
Journey From Unix to Linux and Booting Process of LinuxUnix History Development and Founders: Unix was developed by Ken Thompson, Dennis Ritchie, and others at Bell Labs, a research and development subsidiary of AT&T, in the early 1970s. Birthplace and Initial Release: Unix was first developed at Be...Nov 26, 2023·8 min read
