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你可以通過(guò)配置 sudo 命令去嘲諷輸入錯(cuò)誤密碼的用戶(hù)。但是現(xiàn)在，當(dāng)用戶(hù)在 shell 輸錯(cuò)命令時(shí)，就能嘲諷他了（濫用？）。

你好 bash-insulter

來(lái)自 Github 頁(yè)面：

當(dāng)用戶(hù)鍵入錯(cuò)誤命令，隨機(jī)嘲諷。它使用了一個(gè) bash4.x. 版本的全新內(nèi)置錯(cuò)誤處理函數(shù)，叫 command_not_found_handle。

安裝

鍵入下列 git 命令克隆一個(gè)倉(cāng)庫(kù)：

git clone https://github.com/hkbakke/bash-insulter.git bash-insulter

示例輸出：

Cloning into 'bash-insulter'...
remote: Counting objects: 52, done.
remote: Compressing objects: 100% (49/49), done.
remote: Total 52 (delta 12), reused 12 (delta 2), pack-reused 0
Unpacking objects: 100% (52/52), done.

用文本編輯器，比如說(shuō)使用 vi，編輯你的 ~/.bashrc 或者 /etc/bash.bashrc 文件：

$ vi ~/.bashrc

在其后追加這一行（具體了解請(qǐng)查看 if..else..fi 聲明 和 source 命令）：

if [ -f $HOME/bash-insulter/src/bash.command-not-found ]; then
    source $HOME/bash-insulter/src/bash.command-not-found
fi

保存并關(guān)閉文件。重新登錄，如果不想退出賬號(hào)也可以手動(dòng)運(yùn)行它：

$ . $HOME/bash-insulter/src/bash.command-not-found

如何使用它？

嘗試鍵入一些無(wú)效命令：

$ ifconfigs
$ dates

示例輸出:

一個(gè)有趣的 bash 鉤子功能，嘲諷輸入了錯(cuò)誤命令的你。

自定義

你需要編輯 $HOME/bash-insulter/src/bash.command-not-found：

$ vi $HOME/bash-insulter/src/bash.command-not-found

示例代碼：

command_not_found_handle () {
    local INSULTS=(
        "Boooo!"
        "Don't you know anything?"
        "RTFM!"
        "Hahaha, n00b!"
        "Wow! That was impressively wrong!"
        "What are you doing??"
        "Pathetic"
        "...and this is the best you can do??"
        "The worst one today!"
        "n00b alert!"
        "Your application for reduced salary has been sent!"
        "lol"
        "u suk"
        "lol... plz"
        "plz uninstall"
        "And the Darwin Award goes to.... ${USER}!"
        "ERROR_INCOMPETENT_USER"
        "Incompetence is also competence"
        "Bad."
        "Fake it till you make it!"
        "What is this...? Amateur hour!?"
        "Come on! You can do it!"
        "Nice try."
        "What if... you type an actual command the next time!"
        "What if I told you... it is possible to type valid commands."
        "Y u no speak computer???"
        "This is not Windows"
        "Perhaps you should leave the command line alone..."
        "Please step away from the keyboard!"
        "error code: 1D10T"
        "ACHTUNG! ALLES TURISTEN UND NONTEKNISCHEN LOOKENPEEPERS! DAS KOMPUTERMASCHINE IST NICHT FÜR DER GEFINGERPOKEN UND MITTENGRABEN! ODERWISE IST EASY TO SCHNAPPEN DER SPRINGENWERK, BLOWENFUSEN UND POPPENCORKEN MIT SPITZENSPARKEN. IST NICHT FÜR GEWERKEN BEI DUMMKOPFEN. DER RUBBERNECKEN SIGHTSEEREN KEEPEN DAS COTTONPICKEN HÄNDER IN DAS POCKETS MUSS. ZO RELAXEN UND WATSCHEN DER BLINKENLICHTEN."
        "Pro tip: type a valid command!"
    )
 
    # 設(shè)置“隨機(jī)”種子發(fā)生器 
    RANDOM=$(date +%s%N)
    VALUE=$((${RANDOM}%2))
 
    if [[ ${VALUE} -lt 1 ]]; then
        printf "\n  $(tput bold)$(tput setaf 1)$(shuf -n 1 -e "${INSULTS[@]}")$(tput sgr0)\n\n"
    fi
 
    echo "-bash: $1: command not found"
 
    # 無(wú)效命令，常規(guī)返回已存在的代碼
    return 127
}

贈(zèng)品：sudo 嘲諷

編輯 sudoers 文件：

$ sudo visudo

追加下面這一行：

Defaults insults

或者像下面尾行增加一句嘲諷語(yǔ)：

Defaults !lecture,tty_tickets,!fqdn,insults

這是我的文件：

Defaults    env_reset
Defaults    mail_badpass
Defaults    secure_path = "/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin:/snap/bin"
## If set, sudo will insult users when they enter an incorrect password. ##
Defaults    insults
 
# Host alias specification
 
# User alias specification
 
# Cmnd alias specification
 
# User privilege specification
root ALL = (ALL:ALL) ALL
 
# Members of the admin group may gain root privileges
% admin ALL = (ALL) ALL   
 
# Allow members of group sudo to execute any command
% sudo ALL = (ALL:ALL) ALL   
 
# See sudoers(5) for more information on "#include" directives:
 
#includedir /etc/sudoers.d

試一試：

$ sudo -k # 清除緩存，從頭開(kāi)始
$ sudo ls /root/
$ sudo -i

樣例對(duì)話(huà)：

當(dāng)輸入錯(cuò)誤密碼時(shí)，你會(huì)被一個(gè)有趣的的 sudo 嘲諷語(yǔ)戲弄。

贈(zèng)品：你好 sl

sl 或是 UNIX 經(jīng)典搗蛋軟件 游戲。當(dāng)你錯(cuò)誤的把 ls 輸入成 sl，將會(huì)有一輛蒸汽機(jī)車(chē)穿過(guò)你的屏幕。

$ sl

Linux / UNIX 桌面樂(lè)趣: 蒸汽機(jī)車(chē)