本文介绍了一种通过编辑.kshrc文件来增强Korn Shell (ksh) 功能的方法。具体包括设置emacs编辑模式及定义快捷键命令，如上一条命令(__A)、下一条命令(__B)、光标右移(__C)、光标左移(__D)及跳转到行首(__H)等，这些设置有助于提高Shell交互体验。
add the following
lines to the bottom of your .kshrc file in your $HOME directory:
set -o emacs
alias __A=$(print '/0020') # ^P = up = previous command
alias __B=$(print '/0016') # ^N = down = next command
alias __C=$(print '/0006') # ^F = right = forward a character
alias __D=$(print '/0002') # ^B = left = back a character
alias __H=$(print '/0001') # ^A = home = beginning of line
lines to the bottom of your .kshrc file in your $HOME directory:
set -o emacs
alias __A=$(print '/0020') # ^P = up = previous command
alias __B=$(print '/0016') # ^N = down = next command
alias __C=$(print '/0006') # ^F = right = forward a character
alias __D=$(print '/0002') # ^B = left = back a character
alias __H=$(print '/0001') # ^A = home = beginning of line
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