Linux中經常需要刪除用戶操作，手工操作執行userdel操作即可，如果刪除失敗根據錯誤提示操作即可。但如果是腳本需要調用刪除用戶操作呢？利用如下實例中drop_user刪除用戶函數，可最大程度保證成功刪除。

操作實例

#!/bin/bash

function drop_user()
{
  [ $# -ne 1 ] && return 1
  
  local username=$1
  
  grep -qs /etc/passwd || return 1
  ps -fu "${username}" | grep -v grep | awk ‘{print $2}‘ | xargs
 
 kill -9 &>/dev/null
  userdel -rf "${username}" &>/dev/null && return 0
  mv /var/run/utmp /var/run/utmp_bak
  touch /var/run/utmp
  userdel -rf "${username}" &>/dev/null && return 0 || return 1  
}

##main

if [ $(whoami) != ‘root‘ ];then
  printf "Please use root to execute script.\n
 
"
  exit 1
fi

if [ $# -ne 1 ];then
  printf "Usage:$(basename $0) username\n"
  exit 1
fi

username=$1
drop_user ${username}
if [ $? -eq 0 ];then
  printf "Drop ${username} success.\n"
  exit 0
else
  printf "Drop ${username} fail.\n"
  exit 1
fi

[ shell編程 ] 自動刪除操作系統用戶