But it was around here before, as far as I remember. 100% it was when I used sudo su to login.
It never had persistent history. Not with that shell. The traditional csh(1) of root does have a persistent history.
You can't enable something that isn't there to begin with.
Maybe you were using a different shell? (I see in another thread you were asking about bash ...)
If you reboot by typing
reboot or shutdown -r now from a terminal session, you will always lose the history for that terminal session. To retain the history for that session, you must exit the session by either ( 1.) entering the exit command, or by ( 2.) typing the [CTRL][D] key combination.What SirDice is saying is 100% correct. You cannot retain history for previous sessions if sh(1) is your shell. You can, however, retain session history if tcsh(1) or bash(1) is your shell. (I am not, however, recommending that you change your root login shell to bash(1) -- that is not a good practice.)
sudo su to gain root privileges, you were retaining the shell and home directory of the user account which executed that command. sudo -i, sudo su -, or sudo su -l to gain root privileges, you are simulating a root login session, and thereby acquiring the shell and home directory of the root account. getent passwd ihor getent passwd rootIs that true for all shells? I vaguely remember that some shells update the history file much more frequently, long before the shell exits. Why do I say that? I often have 3 or 4 windows logged in to the same machine and the same user, with separate shell executables. And sometimes it seems to me that one shell can see commands in the history that another shall has executed recently, while that other shell is still alive. I don't see them with cursor-up command line editing, but when I search the history with control R.
ihor:*:1001:1001:ihor:/home/ihor:/bin/sh
Since both accounts have the sh(1) shell, I can't explain how the history command ever worked for you before.
history is not a sh(1) builtin(1) command. When I type history in my user account with the sh(1) shell, it outputs:sh: history: not found history as root, with the csh(1) shell, it does display my history. fc builtin(1) command to display your session history in the default text editor, but only for the current terminal session.How does one go about installing ksh(1)? My 13.0-RELEASE system doesn't seem to have it installed. I ran
pkg install ksh93 but after running ksh93 it says my $SHELL is /bin/csh and typing set -o posix outputs ksh93: set: posix: bad option(s).I think $SHELL shows your login shell, so not necessarily showing what is your current shell.
Yeah you're right, it's displaying my login shell. I've tried installing ksh93, ksh2020, and ast-ksh but in each case I can find only the file /usr/local/bin/ksh93 and no ksh.
$ grep ksh /etc/shells $ doas echo /usr/local/bin/ksh93 >> /etc/shells $ doas chsh -s /usr/local/bin/ksh93 USERNAMEset -o posixIf you use ports you have an option between ksh or ksh93 name but with packages is ksh93.
