linux下修改 /etc/hosts 文件的小脚本
一直是通过firefox的插件来管理HOSTS，但是最近FF的最近版本老是将一些很多用的插件不可用了！ 换了很多其他的插件还是不好用，干脆自己动手写个小脚本来做HOST管理！?
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#!/bin/bash ## use for change /etc/hosts file # author :zhaoming.xuezm# date :2011-12-5# last modify :2011-12-6# version :1.0.0#------------------------------------------------------ param check --------------------------------------------------if [ $# -ne 1 ];then echo 'Type 'hc help' for usage.' exit 1 fi#------------------------------------------------------ init --------------------------------------------------#check has the privilege to change hosts user_name=`id -nu`group_name=`id -ng`if [ $group_name = "root" ];then echo 'please input adminstrator passwd :' sudo gpasswd -a $user_name $group_name
ficd `dirname $0`bin_path=`pwd`# hostdir is used to store host file which add by operator if [ ! -d hostdir ];then mkdir hostdir ficd $bin_path/hostdir host_suffix="_host"current_hostfile=""action=$1declare -a host_array;#error_code && error message none_files=4none_files_message="you should add a file first !"#------------------------------------------------------ list all host file --------------------------------------------------list_host(){ local index=1 file_num=`ls *host >> /dev/null 2>&1` if [ $? -ne 0 ];then printf "%s\n" "none files" return $none_files else for i in `ls *host` do #should cut the "_host" suffix temp=$i real_length=`expr length $temp` suffix_length=`expr length $host_suffix` need_length=`expr $real_length - $suffix_length` real_name=`expr substr $temp 1 $need_length` echo "$index : $real_name" host_array[$index]=$i index=$(($index+1)) done fi}#judge parameter 1 is equal system default check_is_default_hostfile(){ if [ $# -ne 1 ];then echo 'param error ! ' return 2 fi if [ -z $current_hostfile ] || [ $current_hostfile = $1 ];then return 0 fi}switch_host(){ echo '------welcome to use host switch-------' list_host if [ $? -eq $none_files ];then echo "$none_files_message" exit fi read selection cat ${host_array[$selection]} > /etc/hosts current_hostfile=${host_array[$selection]} echo "------switch to " ${host_array[$selection]} "------"}add_host(){ echo '------input file name ------' read filename vim $filename mv $filename $filename$host_suffix}del_host(){ echo '------del host:choose the file -----' list_host if [ $? -eq $none_files ];then echo "$none_files_message" exit fi read selection rm -f ${host_array[$selection]} if [ $? -eq 0 ];then echo "del host file ${host_array[$selection]} success" else echo "del host file ${host_array[$selection]} failed" fi}edit_host(){ echo '------eidt host:choose the file -----' list_host if [ $? -eq $none_files ];then echo "$none_files_message" exit fi read selection vim ${host_array[$selection]} check_is_default_hostfile ${host_array[$selection]} if [ $? -eq 0 ];then cat ${host_array[$selection]} > /etc/hosts fi }show_file_content(){ list_host if [ $? -eq $none_files ];then echo "$none_files_message" exit fi read selection cat ${host_array[$selection]}}show_version(){ printf "\n" printf "%s\n" 'hc :host change , version 1.0.0 ' printf "\n" printf "%s\n" "Copyright (C) 2011-2011 inter12." printf "\n" }show_help(){ printf "\n" printf "%s\n" "most subcommand take action ! If not allow no arguments supplied to such a command!" printf "\n" printf "%s\n" "Available subcommands:" printf "%s\n" " add : add a new host file and saved as name which you input ! it locate in the path: path/hostdir " printf "%s\n" " del : del the host file ! if this file is current used as system hosts .will still valid ! " printf "%s\n" " edit : edit the host file and if the file you edit is current syste, hosts ,it will take effect immediately !" printf "%s\n" " sw : change the file which you choose as a system default hosts " printf "%s\n" " list : list all host file !" printf "%s\n" " version | --version : show hc version " printf "%s\n" " help | --help : show hc command format !" printf "\n" printf "\n" printf "%s\n" "hc is a tool for host change !" printf "%s\n" "For additional infomation. you can mail to godspeed712@gmail.com | zhaoming.xuezm@alibaba-inc.com"}#------------------------------------------------------ main entrance --------------------------------------------------case "$action" in sw) switch_host ;; add) add_host ;; del) del_host ;; edit) edit_host ;; list) show_file_content ;; --help | help) show_help ;; --version | version) show_version ;; *) echo 'Type 'hc help' for usage.' ;;esac 1 楼 aliahhqcheng 2012-03-11 学习shell的入门书籍是什么呀？这个看不懂.... 2 楼 inter12 2012-03-12 aliahhqcheng 写道学习shell的入门书籍是什么呀？这个看不懂....