【Linux】操作题大全

#!/bin/bash
s=0
i=1
while ((i<=100))
	do
		s=$(($s+$i))
        ((i++))
	done
echo $s

#!/bin/bash
for((i=1;i<=100;i=i+1))
	do
		echo "$i"
	done

#!/bin/bash
i=1
while((i<=100))
	do
		echo "$i"
		((i++))
	done

#!/bin/bash
read -p "the first:" a
read -p "the second:" b
echo "$(($a+$b))"

#!/bin/bash
useradd thyl
passwd thyl
groupadd test 
usermod -g test thyl

#!/bin/bash
cd /root/thyl
mkdir back
mv back bak
touch test1
touch test2
cp test2 ../file2

bash /home/test/test/.sh

chmod 777 /home/test/test.sh

./test.sh

#!/bin/bash
for FileName in `ls -l | awk '$5>10240 {print $9}'`
	do  
		mv $FileName /tmp
	done

#!/bin/bash
FILENAME= echo "Input file name："
read FILENAME
if [ -c $FILENAME ]
	then
   	 cp	 $FILENAME /dev
else
    	echo "这不是设备文件"
fi

#!/bin/bash
num=0
for i in $(ls)
	do
		num=$[$num+1]
		echo "item:$i"
	done
echo "the number of files is $num"