[bodyfour]

In bash: IGNOREEOF=10

In zsh: setopt ignore_eof

In ksh: set +o ignoreeof

In tcsh/csh: set ignoreeof

Normally I just do this for login shells, so I can quickly exit out of subshells.

[vram22]

Similarly, to not overwrite an existing file when doing output redirection, there is bash's noclobber option.

https://www.google.co.in/search?q=bash+set+noclobber

[tasuki]

10 ???

For bash I set `IGNOREEOF=1` so as to have to press ctrl+d twice to exit. Ten times seems a bit too many.

How to do the same for zsh?