Programmer time is better spent learning almost any language other than bash. My god, the centuries wasted on minutiae like the stupid "[ is a program, that's why you have to put spaces around it."
And system administrators should use Ruby if given a choice.
fish would be better than bash as a system shell as well. More consistent, for example. However, bash is available and usually preinstalled everywhere, in contrast to fish.
I agree. But "fish" is quite strange to me, especially its way to recall history. In "Bash", I can type "^ R" and browser the history very fast. In "fish", I have to type and select with up/down array; it's not easy to browser the history randomly (FIXME).
My #Bash" history has > 96k entries (woh, believe it or not; because of this too big number, "xterm" + "screen" always stuck when exitting; but "urxvt" + "tmux" work perfectly thanks to "urxvt" daemon mode.)
Porting this huge history database from my daily "bash" to "fish" is just a nightmare ... :D
That's why I only learn Bash. One lesson for everything for both purposes ;)