[실습] shell script

- read

#!/bin/bash

echo -n "What is your name? : "

read name -- 위에서 입력한값을 name변수에 저장

echo "Your Name is $name. " --name변수에 저장된 값을 출력하기위해 $사용

---

-argument

#!/bin/bash

echo " "

echo "Name : $1"

echo "Address : $2"

echo "Tel : $3"

echo " "

echo File name : $0"

echo " "

[root@localhost shell]# sh argu_test.sh myj seoul 123-4567

                               €           ‚      ƒ

Name : myj

Address : seoul

Tel : 123-4567

File name : argu_test.sh

---

- 숫자계산하기

[root@localhost shell]# vi cal_test1.sh

#!/bin/bash

echo " "

echo -n "Enter First Number : "

read A

echo -n "Enter Second Number : "

read B

echo -n "Enter Second Number : "

read C

echo " "

hap = `expr $A +$B` --숫자로인식시키기 위해 `expr`

result = `expr \( $A + $B \) \* $C` --( ) 나 * 앞에 \(역슬래쉬)붙여야함.

echo "$A + $B"

echo "$A + $B = $hap "

echo "($A + $B) X $C = $result`

echo " "

[root@localhost shell]# sh cal_test1.sh

Enter First Number : 3

Enter Second Number : 4

Enter Third Number : 5

3 + 4 --문자 그대로 인식함, 숫자로 인식 안함

3 + 4 = 7 --$hap으로 변수 더해준 값

(3 + 4) X 5 = 35 -- $result로 연산해준값

---