1. According to IP output card name
| #!/bin/bash ip addr|grep ^[0-9]|awk -F '[: ]+' '{print $2}'>/tmp/eth.list ## use an infinite loop to prompt the user to enter the correct name of the card, enter the correct name of the card out of the cycle of death
the while:
do
echo "at The Network Card CAT IS` /tmp/eth.list | xargs` "# multiple lines as a single line
read -p "enter the card name:" the X-
IF [the -z "the X-$"]
the then
echo "Please enter a name card"
the Continue
fi
! IF grep -qw "the X-$" /tmp/eth.list
the then
echo "input NIC name does not exist, please enter the correct network adapter name "
the Continue
the else
BREAK
fi
DONE ## a case where an IP network card, ip write variables
# ip = `ip addr show dev eth0 | grep -w" inet "| awk '{print $ 2}' | awk -F / '{print $ 1}'`
#echo "The $ x ip is $ ip" A network adapter ## of a plurality of IP, IP written to the file
NET_IP ()
{
IP addr Show dev eth0 | grep -w "inet" | awk 'Print $ {2}' | awk -F / '{}. 1 Print $' > /tmp/$1.txt
n-WC = `-l /tmp/$1.txt|awk '{}. 1 Print $'`
IF [$ n--eq 0]
the then
echo "The no. 1 $ the IP"
the else
echo "The IP $. 1 IS: "
CAT /tmp/$1.txt
Fi
}
NET_IP $ X |
2. List the directory contents
3. Download the file
| #!/bin/bash IF [$ # -ne 2]
the then
echo "You must enter two parameters, the first parameter for the site, and the second parameter is the directory"
Exit 1
fi if [ ! -d $2 ]
then
while :
do
echo "$2目录不存在，是否创建该目录?(y|n)"
read c
case $c in
y|Y)
mkdir -p $2
break
;;
n|N)
exit 51
;;
*)
echo "请输入y或者n"
continue
;;
esac
done
else
cd $2
wget $1
if [ $? -eq 0 ]
then
exit 0
else
echo "下载失败"
exit 52
fi
fi |
4. 猜数字
5.