Debian 下，该包提供一功能，输错命令或输入命令暂未安装时给予提示，某命令在某包。
>0< ~$ aash
No command 'aash' found, did you mean:
Command 'kash' from package 'kanif' (main)
Command 'ash' from package 'ash' (main)
Command 'bash' from package 'bash' (main)
Command 'dash' from package 'dash' (main)
Command 'nash' from package 'lrslib' (main)
Command 'sash' from package 'sash' (main)
aash: command not found
>127< ~$