#!/bin/bash
USERADD(){      #用戶創(chuàng)建函數(shù)
        RN=$(sed -n '$=' $1)
        for ((I=1;I<=$RN;I++))
        do
                user=`sed -n  "$I"p $1`
                password=`sed -n "$I"p $2`

                id $user &>/dev/null    #判斷該用戶是否存在
                [ $? -eq 0 ] &&{
                        echo "$user 已經(jīng)存在了"
                }||{
                        useradd $user #新建$user中的用戶
                        echo "$password" | passwd --stdin $user &> /dev/null
                        [ $? -eq 0 ] &&{
                                echo "$user 用戶創(chuàng)建成功"
                        }
                }
        done
}
# 判斷模塊
[ $# -lt 2 ] &&{   #判斷文件是否小于兩個
        echo "ERROR:文件個數(shù)不足!!"
}||{    [ -e $1 -a -e $2 ]&& {  #判斷文件是否存在
                #判斷兩個文件行數(shù)是否相等
                [ `sed -n '$=' $1` -eq `sed -n '$=' $2` ] &&{
                        USERADD $1 $2
                        #調(diào)用用戶創(chuàng)建函數(shù)
                }||{
                        echo "ERROR:文件行數(shù)不一致!!"
                }
        }||{
                echo "ERROR:文件不存在!!"
        }
}

#!/bin/bash

Number=7
while true
do
       read -p "請輸入一個數(shù)字: " NUM
       if [ $NUM = $Number  ]
       then
               echo "恭喜您，猜中啦！！！"
               exit
       elif [ $NUM -lt $Number ]
       then
               echo -n  "數(shù)字太小了！"
       elif [ $NUM -gt $Number ]
       then
               echo -n "數(shù)字太大了！"
       else
               echo -n "error"
       fi
done

#!/bin/bash

[ -z $* ] && {
        echo "ERROR: Not input net device !"
}||{
        Device=`ifconfig $* 2> /dev/null`&&{
                while true
                do
                        RXpre=$(cat /proc/net/dev | grep $1 | tr : " " | awk '{print $2}')
                        TXpre=$(cat /proc/net/dev | grep $1 | tr : " " | awk '{print $10}')
                        # 獲取1秒后網(wǎng)口接收與發(fā)送的流量
                        sleep 1
                        RXnext=$(cat /proc/net/dev | grep $1 | tr : " " | awk '{print $2}')
                        TXnext=$(cat /proc/net/dev | grep $1 | tr : " " | awk '{print $10}')
                        # 獲取這1秒鐘實(shí)際的進(jìn)出流量
                        RX=$((${RXnext}-${RXpre}))
                        TX=$((${TXnext}-${TXpre}))

                        TX=$(echo $TX | awk '{print $1/1024 " KB/s      "}')
                        RX=$(echo $RX | awk '{print $1/1024 " KB/s      "}')
					
					#在同一行刷新監(jiān)控顯示
                        #echo -ne "input: $RX    \t\toutput: $TX  "
                        #echo -ne "\r"
					clear # 使用clear清屏后顯示
					echo -ne "input: $RX \noutput: $TX  "					   
                done
        }||{
                echo "$1 is not exist"
        }
}