People that hate zsh

Ted Leung wrote a positive review about Peter's and Oliver's book.

Then came the entertaining comments. Here are two bits which made me giggle the most.

In no case should you be doing complex programming in a shell script!

Learning the POSIX standard shell is time well spent, IMO. Most shells implement it pretty well (e.g. bash, zsh, sh on most machines) and it's pretty powerful.