history -c doesn't clean ~/.bash_history about ble.sh HOT 9 CLOSED

Yes, you are right. That is the behavior of Bash. Or do you see any difference in the behavior with and without ble.sh?

In the first place, the in-memory command history and the history file is not synchronized for every command. It is only synchronized when the Bash session ends or you run history -w or history -a (depending on your preference). The command history -c only clears the in-memory command history. If you would like the in-memory history to be reflected in the history file, you need to run history -w in a row.

If you expect the in-memory history to be reflected in the history file on the session end (including the removal of entries), please make sure the shell option histappend is turned off (i.e., `shopt -u histappend).

from ble.sh.

But after running shopt -u histappend, history -c still doesn't clean ~/.bash_history.

from ble.sh.

shopt -u histappend is just a setting to control the behavior on the session end. Changing the setting doesn't immediately clean ~/.bash_history. You need to exit the session for shopt -u histappend to take an effect.

If you would like to reflect the content of the in-memory command history into the history file immediately, you need to run history -w.

from ble.sh.

P.S. "the session end" means that you exit the current Bash session by running exit, by pressing C-d on an empty command line, or by closing the terminal window.

from ble.sh.

In fact I ran history -c, exited the session and ~/.bash_history still wasn't cleaned up.

from ble.sh.

The behavior you reported does not reproduce in my environment. I tried bash-5.1 and 5.2. I also tried it with and without oh-my-bash and bash-completion. Always, the consequence of history -c is reflected to ~/.bash_history when the Bash session ends in my environment.

• Q1: Does the reported behavior reproduce with a plain Bash plus ble.sh (without any other configurations)?

from ble.sh.

• Q2: Could you give me the result of the following command?

$ ble/widget/display-shell-version

from ble.sh.

After I manually deleted ~/.bash_history, it strangely became clearable with history -c.
I don't know why but it works fine now.

from ble.sh.

Thanks for the information. Hmm, one possibility is that it was caused by the permission of the file. When I change the permission of the history file as chmod 400 ~/.bash_history, I can reproduce the behavior of not clearing the file content, though it doesn't allow appending new entries in ~/.bash_history either.

from ble.sh.