Find Long Lines With awk
Published December 13, 2025 and last verified on December 13, 2025
Find lines that exceed a specific character limit in text files and source code using awk, great for enforcing line length standards.
Harness the Combinatoric Power of Command-Line Tools and Utilities
Commands
Copy thousands of files with rsync
Published July 29, 2024 and last verified on December 13, 2024
Use rsync to copy thousands of files between machines with progress tracking, resume support, and options for bandwidth control.
Use CDPATH to Access Directories Faster
Published May 31, 2024 and last verified on December 13, 2025
Set the CDPATH environment variable in Bash or Zsh to cd into your most-used directories from anywhere in your terminal.
See Open Network Connections
Published May 17, 2024 and last verified on December 13, 2025
List open network connections and their TCP state on your system using the lsof command, with options to filter by protocol and port.
Follow Log Files With Less
Published May 17, 2024 and last verified on December 13, 2025
Follow and monitor log files in real time using the less command, with search, navigation, and filtering right in your terminal.
Find Modified Files
Published May 17, 2024 and last verified on December 13, 2025
Use the find and sort commands to search a directory for the most recently modified files and sort them by modification time.
Create Multiple Files With Brace Expansion
Published May 17, 2024 and last verified on July 11, 2025
Use brace expansion in the terminal to create multiple files or directories with a single command, saving time and effort.
Rename Multiple Files
Published May 14, 2024 and last verified on December 13, 2025
Batch rename files in the terminal using a Bash for loop and the mv command to change file extensions and naming patterns quickly.
The Cal Command
Published January 27, 2019
Display a calendar in your terminal with the cal command, view specific months or years, and highlight dates for quick reference.
Dates with the Date Command
Published January 26, 2019
Format dates, calculate future and past dates, and do date math from the terminal using the date command on macOS and Linux.
Making Directory Structures
Published January 23, 2019
Use the mkdir command with the -p flag and brace expansion to build a full project directory structure in a single command.
Three Ways to Create Files
Published January 21, 2019
Create files from the command line using touch, redirection, and heredocs, and understand when to use each approach.