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Shebang The shebang (#!) is a special character sequence at the very beginning of a script file that tells the operating system which interpreter...
Conditional Logic Conditional logic in shell scripting is used to execute commands based on specific conditions. This allows scripts to make...
What is Shell Script? A shell script is a text file containing a series of commands written for the Linux shell (e.g., bash, zsh, or sh). Shell...
Storage Basics Block Devices A block device is a type of file found under /dev/ directory. It represents a piece of hardware that can store...
SYSTEMD and Services What is SYSTEMD? Systemd is a Linux initialization system and service manager that is responsible for bootstrapping the system,...
Linux Accounts A Linux account is a unique user identity that grants access to a Linux system. It consists of a combination of a username, password,...