what shell do you use

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http://crunchbanglinux.org – I'm interested in zsh, and I did a little search here, but it seem like this hasn't been covered recently...What shell do you use, and why? Currently, I use bash, because it's the default and easy. But I've read a little about zsh and plan to start using it on the test machine soon (like I need another config file to play with :/ ) in addition to learning vim and python, and switching from sakura/terminator to urxvt...Your opinions? (HowTos)