## What are my options?

You can switch to BASH if you are very familiar with BASH, however it is **recommended** to stick with KSH as KSH is more POSIX compliant.

That said, you **can** also make KSH behave more like BASH, which is more preferable than switching over to BASH.

## I want to switch to bash

If you prefer bash,

    $ chsh -s /usr/local/bin/bash username


Replace `username` with your real username.

Log out and log back in to make your default shell bash.

## How can I make ksh behave like bash?

Edit your ~/.profile to declare the HOSTNAME variable, as the actual hostname is stored within /etc/myname. Then, you want to make sure that your ~/.profile reads its environment from your ~/.kshrc. So your ~/.profile should look something like this,

    # $OpenBSD: dot.profile,v 1.5 2018/02/02 02:29:54 yasuoka Exp $
    #
    # sh/ksh initialization
    PATH=$HOME/bin:/bin:/usr/bin:/usr/X11R6/bin:/usr/local/bin:/usr/games
    export PATH HOME TERM
    HOSTNAME="$(cat /etc/myname)"
    ENV="$HOME/.kshrc"; export ENV


Once you have that down, it is now time to edit your ~/.kshrc file.

    function _cd {
      \cd "$@"
      PS1=$(
        print -n "$LOGNAME@$HOSTNAME:"
        if [[ "${PWD#$HOME}" != "$PWD" ]]; then
          print -n "~${PWD#$HOME}"
        else
          print -n "$PWD"
        fi
        print "$ "
      )
    }
    alias cd=_cd
    cd "$PWD"


[Source: Stack Overflow](/https://stackoverflow.com/questions/1171663/how-to-custom-display-prompt-in-kornshell-to-show-hostname-and-current-directory/8468165#8468165)

## Implement command history

"For the arrow keys, you can put this into your the .kshrc file [(pdksh and mksh both use .mkshrc, not .kshrc)] in your home directory:

    set -o emacs
    alias __A=`echo "\020"`     # up arrow = ^p = back a command
    alias __B=`echo "\016"`     # down arrow = ^n = down a command
    alias __C=`echo "\006"`     # right arrow = ^f = forward a character
    alias __D=`echo "\002"`     # left arrow = ^b = back a character
    alias __H=`echo "\001"`     # home = ^a = start of line
    alias __Y=`echo "\005"`     # end = ^e = end of line


[Source: Stack Exchange](/https://unix.stackexchange.com/a/388258)

## How do I change my password?

    $ passwd
    Changing password for $user
    Old password:
    New password:
    Retype new password:
    $