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I understand that my book which I wrote with 5 other great guys is coming out when I am at TechEd! Outstanding. I guess that Jay Glynn and myself will be doing a book signing on Thursday in the Wiley/Wrox booth, so see you there! I am looking forward to this book coming out as it was a lot of work.
du -sh for the quick answer, ncdu for the cleanup, df for the disk itself: every command for checking directory size in Linux, plus why du and df never agree.
One :%s command replaces every match in a file before a find dialog would even open. The Vim substitute patterns worth the muscle memory: flags, ranges, capture groups, and multi-file edits.
Your existing team is buried in the complexity of your existing product. AI rewards the team with a blank slate. Most companies don't have one.
The stories about offshore "not working" are rarely about skill. They are about an invisible communication gap, and it starts the moment someone says yes.