Essential Linux Command Line Operations for System Navigation and File Management
Navigating the Filesystem
pwd Command
pwd
Displays the absolute path of the current working directory.
cd Command
cd [target_directory]
Changes the current shell session's working directory.
Usage:
cd ..: Move up to the parent directory.
cd /home/user/docs: Navigate using an absolute path (starts from root /).
cd ../projects: Navigate using ...
Posted on Sat, 09 May 2026 03:41:05 +0000 by y_oda2002
Essential Linux Commands for Filesystem Navigation and Management
pwd: Print Working Directory
The pwd utility outputs the absolute path of the current working directory. It is primarily used to verify your location within the filesystem hierarchy before executing path-dependent operations.
Syntax
pwd [options]
Usage Example
$ cd /var/log/nginx
$ pwd
/var/log/nginx
cd: Change Directory
The cd command ...
Posted on Fri, 08 May 2026 17:05:41 +0000 by webtuto
Advanced Shell Variable Operations
Variable Deletion and Replacement
Removing Prefix Patterns
Removing the shortest matching prefix pattern using #:
greeting="Hello World, Welcome to Shell"
echo $greeting
greeting_clean=${greeting#*or}
echo $greeting_clean
Removing the longest matching prefix pattern using ##:
greeting_long=${greeting##*or}
echo $greeting_long
String ...
Posted on Fri, 08 May 2026 14:00:10 +0000 by netpants