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shellunixfish

How to prevent Fish shell from closing when typing Ctrl-D (EOF)

I am using fish shell. When I type Ctrl-D, it sends a EOF to my terminal and then terminal closes.

I want to make it such that ctrl-D does not close my iterm2.

I saw that people have set up IGNOREEOF in bash shell like this: https://unix.stackexchange.com/questions/27588/how-can-i-keep-controld-from-disconnecting-my-session

However, I don't think this variable exists in fish. Does anybody know how I can force iterm2(with default fish shell) to not close on ctrl-D?

Solution

  • This is the default key binding for control-D:

    bind \cd delete-or-exit

    you can find this by just running bind.

    (delete-or-exit is just a function, which you can read with functions delete-or-exit.)

    So it's exiting because that's what the default behavior is. You can make control-D do something else. For example, maybe it should delete the character under the cursor:

    bind \cd delete-char

    If you want to make this permanent, add it to your fish_user_key_bindings function:

    1. Run funced fish_user_key_bindings which starts editing
    2. Put bind \cd delete-char within the function
    3. Hit return to create the function
    4. Run funcsave fish_user_key_bindings to save it