More useful shell incantations
List dir contents in descending order by date modified
zip -Dr zipdest.zip /zipsource/stuff
Recursively zip contents of a directory but flatten out paths so all files are at one level in the zip file.
rename 's/.png.+/.png/' *
Rename files based on regex substitution pattern. Note for this you should not use the old
rename binary. The perl one is available via Homebrew:
brew install rename
curl -O url
Do not change the filename of the downloaded file. I always forget the correct option.