Five more, all from this week:
1. date -u to get your date in UTC
2. pushd and popd – create your own directory stack. I’m still trying this one out. (“why not just use the up arrow?”)
3. pbcopy – copy to clipboard from the command line.
4. !$ contains the last arg of the previous command, so you can do something like this:
ls -l filename.* # check what you have in the dir
5. This one is my favorite: !?[string] runs last command that contains that string.