Zsh для вулканов. ;-)
Серьезно: bash 4.0 имеет некоторые функции, ранее встречавшиеся только в zsh, например ** globbing:
% ls /usr/src/**/Makefile
эквивалентно:
% find /usr/src -name "Makefile"
но, очевидно, более мощный.
По моему опыту программируемое завершение bash работает немного лучше, чем zsh, по крайней мере, в некоторых случаях (например, завершение пакетов Debian для aptitude).
Баш должен Alt + .
вставить!$
zsh has expansion of all variables, so you can use e.g.
% rm !$<Tab>
for this. zsh can also expand a command in backtics, so
% cat `echo blubb | sed 's/u/a/'`<Tab>
yields
% cat blabb
I find it very useful to expand rm *
, as you can see what would be removed and can maybe remove one or two files from the commmand to prevent them from being deleted.
Also nice: using the output from commands for other commands that do not read from stdin but expect a filename:
% diff <(sort foo) <(sort bar)
From what I read bash-completion also supports completing remote filenames over ssh if you use ssh-agent, which used to be a good reason to switch to zsh.
Aliases in zsh can be defined to work on the whole line instead of just at the beginning:
% alias -g ...="../.."
% cd ...