echo "Please type your number:"
read a
for ((i=1;i<=a;i++))
do
for ((p=1;p<=i;p++))
do
echo -n " $p "
done
echo
done
echo
2.九九乘法表
#!/bin/bash
for ((i=1;i<10;i++))
do
for ((p=1;p<=i;p++))
do
echo -ne " $p x $i= "`expr $i \* $p`
done
echo
done
echo
3.计算器
#!/bin/bash
s=0
while true
echo "..............+"
echo "..............-"
echo "..............x"
echo "............../"
echo "..............q"
echo "Please type your word:(e.g.1 + 2)"
read a b c
do
case $b in
+)
let s=a+c
echo " $a + $c =" $s;;
-)
let s=a-c
echo " $a - $c =" $s;;
\x)
let s=a*c
echo " $a x $c =" $s;;
\/)
let s=a/c
echo " $a / $c =" $s;;
esac
case $a in
q) break ;;
esac
done
4.菱形
#!/bin/bash
echo "Please type a number:"
read num
for ((i=1;i<=num;i++))
do
for ((j=0;j<num-i;j++))
do
echo -n " "
done
for ((j=0;j<2*i-1;j++))
do
echo -n "*"
done
echo ""
done
for ((i=1;i<=num;i++))
do
for ((j=0;j<i;j++))
do
echo -n " "
done
for ((j=0;j<2*(num-i)-1;j++))
do
echo -n "*"
done
echo ""
done
5. 输出当前目录下所有文件，并输出文件总数和目录总数
#!/bin/bash
ls -al
filenum=0
dirnum=0
for q in `ls -a`
do
if [ -d $q ]
then
dirnum=`expr $dirnum + 1`
fi
filenum=`expr $filenum + 1`
done
echo "The number of dirctary is $dirnum"
echo "The number of file is $filenum"
6.菜单
#!/bin/bash
while true
echo "List Directory..........l "
echo "Change Directory........c "
echo "Edit File...............e "
echo "Remove File.............r "
echo "Exit Menu...............q "
read ch
do
case $ch in
l) ls;;
c) echo Enter target directory
read direc
cd "$direc" ;;
e) echo Enter file name
read file
vi $file ;;
r) echo Enter file name
read file
rm $file ;;
q|Q) echo Goodbye
break;;
*) echo illegal Option
esac
done