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

问题描述

我知道有些命令可以通过shell取别名，比如

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

alias mv="cp"

但我想做类似的事情，但有参数(是的，我已经看到了 其他问题，但我的问题略有不同).类似于:

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(至少是意外)并使其重新启动(这是针对已发生多次的服务器).因此，除了别名，有没有办法防止命令killall sshd被执行，而是执行service sshd restart 代替?

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

你想拦截killall，所以:

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

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