Learn the correct Linux commands to find files containing specific text. Discover why your grep command shows all files and how to fix it. Complete guide with examples for efficient text searching.
Learn multiple methods to pretty-print JSON in shell scripts using jq, Python, PHP, and built-in tools. Complete guide with examples for Unix/Linux developers.
Learn how to correctly extract filename and extension in Bash for files with multiple dots. Discover parameter expansion solutions that outperform cut, awk, and sed methods.
Learn how to delete lines containing specific strings using sed command. Master pattern matching, case-insensitive options, and in-place editing with practical examples for text file processing.
Learn the purpose of npm install --save flag and how it manages dependencies in package.json. Complete guide covering historical context, practical examples, and best practices for modern npm versions.
Master recursive file searching with wildcard patterns on Linux, macOS, and Windows. Includes find command, PowerShell, and cross-platform solutions with practical examples.
Learn multiple methods to split strings on delimiters in Bash including IFS, tr command, parameter expansion, and arrays. Complete guide with examples and best practices for efficient string manipulation.
Learn multiple methods to identify which process is listening on specific TCP or UDP ports in Windows using netstat, PowerShell cmdlets, and advanced scripts for effective network troubleshooting.
Learn how to use grep -v flag to match lines that don't contain specific patterns. Avoid common mistakes with character classes and master pattern exclusion in Linux.
Learn multiple methods to trim whitespace from Bash variables efficiently. Discover parameter expansion, read command, sed, and tr solutions for clean shell scripting.
Learn efficient methods to export MySQL query results to CSV format from Linux command line. Discover built-in MySQL commands, command-line processing, and best practices for production use.
Complete guide to installing and using XFS and ZFS utilities on macOS via Homebrew. Integration with Makefile for OS development with command-line support.
Learn how to read from stdin in Python, C/C++, and other languages. Complete guide covering basic to advanced techniques with practical examples and best practices.
Learn how to create parameterized commands in Bash using functions instead of aliases. Complete guide with examples and best practices for CShell migrants.
Discover what .PHONY means in Makefiles and why it's essential for reliable build automation. Learn how to declare phony targets and prevent conflicts with existing files for consistent behavior.