The problem with these alternative shells (to me) is that you'll have to install the shell on other machines before you can use the script you wrote. Bash being

The problem with these alternative shells (to me) is that you'll have to install the shell on other machines before you can use the script you wrote. Bash being present on just about all Linux distros makes it useful, even if the scripting is quite terrible. And if I'll have to do something more complicated I'll use a proper scripting language like Python instead of learning another shell language. It would be great if bash was a little less crap though.