Linux程式設計經典例項
阿新 • • 發佈:2019-01-10
1、數字輸出
#!/bin/bash
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
2、九九乘法表輸出
#!/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、菱形輸出
#!/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
4、計算器
#!/bin/bash s=0 while (()) #echo "..........+" #echo "..........-" #echo "..........x" #echo "........../" #echo "..........q" echo "Please type your word:(eg.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;; /) echo "$a / $c = "$(printf "%.2f" `echo "scale=2;$a/$c"|bc`) ;; *) let s=a*c echo "$a * $c = "$s;; esac case $a in q) break;; esac done
5、電話本
#!/bin/bash
read file
if [ -f "$file" ]
then
echo "$file found."
echo "Continue!"
else
echo "$file not found."
touch $file
echo "Create $file success!"
fi
while(())
echo "If you want to add a user plese type----------------------add"
echo "If you want to del a user plese type----------------------del"
echo "If you want to watch all users plese type-----------------ls"
echo "If you want to edit users plese type----------------------edit"
echo "If you want to exit plese type----------------------------q"
read b
do
case $b in
add)
echo "Please type your name:"
read name
echo "Please type your number:"
read number
echo $name $number >>/data/crm/crmpluscx/0108/phone
;;
del)
echo "Please type which name do you want to del:"
read name
cat /data/crm/crmpluscx/0108/phone|grep -v $name > /data/crm/crmpluscx/0108/trance
cat ~/0108/trance > ~/0108/phone
;;
ls)
cat /data/crm/crmpluscx/0108/phone;;
edit)
echo "Please type which name do you want to edit:"
read name
cat /data/crm/crmpluscx/0108/phone|grep -v $name > /data/crm/crmpluscx/0108/trance
cat ~/0108/trance > ~/0108/phone
echo "Please type your new name"
read name
echo "Please type your new nunber"
read number
echo $name $number >> /data/crm/crmpluscx/0108/phone
;;
q)exit;;
esac
done
6、選單模擬shell命令
#!/bin/bash
while (())
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 -f $file
;;
q|Q)
echo Goodbye
break;;
*)
echo illegal Option
esac
done