“别名”是指带参数的命令 [英] "Aliasing" of Commands with Arguments

问题描述

我知道某些命令可以通过shell进行别名，例如

I know that some commands can be aliased through the shell, such as

alias mv="cp"

但是我想做类似的事情，但要带参数（是的，我已经看到其他问题，但我的问题略有不同）。类似于以下内容：

But I want to do something similar but with arguments (and yes, I have seen the other question, but my question is slightly different). Something similar to:

sshkill() {
  service sshd restart 
}
alias sshkill="killall sshd"

但这显然行不通。

我希望防止用户直接杀死sshd（至少是无意间）并使它重新启动（这是针对已多次发生的服务器）。因此，除了 aliasing 之外，还有一种方法可以防止阻止命令 killall sshd 被执行，而是执行 service sshd重新启动？

I wish to prevent users from directly killing the sshd (at least by accident) and make it restart (this is for a server where this has happened more than once). So, rather than aliasing, is there a way to prevent the command killall sshd from being executed and rather executing service sshd restart instead?

推荐答案

您要拦截 killall ，因此：

killall() {
  if [ "$1" = "sshd" ]; then
    echo "some warning message, and perhaps service sshd restart"
  else
    command killall "$@"
  fi
}

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