Bulk rename a batch of files
Rename many files at once with a plain bash loop, safely handling spaces and previewing changes before committing.
Recipes
Short, task-oriented how-tos: problem, solution, explanation.
Copy files between two machines over SSH
Transfer a file or directory tree between two machines with scp or rsync, and resume an interrupted transfer without starting over.
Find the largest files on disk
Locate what's actually eating your disk space, from a whole filesystem down to one directory.
Find and kill whatever is using a port
Identify the process bound to a TCP port that's refusing to let a service start, then stop it.
Monitor a log file in real time
Watch a log file as new lines are written, filter it live, and keep watching across log rotation.