A flowchart on how to undo changes in Git, from this tweet.
Mac OS X performance tuning tools and commands. From this tweet by Brendan Gregg.
It took me a few minutes to figure out that when you want help on Play Framework console commands (i.e., the Play command line tool), you may get more useful help by typing
help play instead of just
help. Using the first command shows information on commands like
console, etc., which is what I'm more interested in.
To take a quick look at this, here's what you get when you type
I just started using tmux last week, and created a cheat sheet to help me remember the basic
tmux commands, and I thought I'd share that here.
The cheat sheet has a few things that are specific to my configuration file, so to begin with, here is my ~/.tmux.conf file:
Scala exec FAQ: How do I execute external system commands in Scala?
When it comes to executing external system commands, Scala is a dramatic improvement over Java. The operators Scala makes available are much more like Perl or Ruby, and the operators themselves are consistent with traditional shell commands, and are therefore easy to remember. Let's take a look at a few examples.
Summary: This is a Git cheat sheet (Git command summary) I've created, featuring many Git command examples.
As I've begun to set up my own private Git hosting repository (see Private Git hosting services, and My A2 Hosting Git repository using SSH), it's time to cram all these Git commands back into my head again.
Git shortcuts FAQ: Can I create Git shortcuts (aliases) so I don't have to type out full Git commands like "git commit..."?
I've been reading the Pro Git book a lot lately, and the short answer is yes, you can create Git shortcuts so you don't have to type out the long Git commands. Here are several Git shortcut commands (referred to as "git aliases") from the Pro Git book:
I created some "cheat sheets" (reference pages) for a recent Unix and Linux training class. One is a "Unix and Linux commands cheat sheet", and the other is a "vi/vim editor cheat sheet". I'll be sharing the entire "Introduction to Unix" training PDF here shortly, but in the meantime, here are the links to the Unix/Linux and vi/vim cheats: