Shell Script 함수(Function) 사용하기 // [Unix] [Linux] [Script] [Programming]

http://blog.redjini.com/281

사용법

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function name(){   shell command }

예제

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function my_function(){    echo "my function" }   my_function

지역변수 (Local variables)

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value=1234;   function my_function(){    local value=5678    echo "function: value= ${value}" }   echo "before  : value= ${value}"   # call my_function my_function   echo "after   : value= ${value}"

실행결과

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before  : value= 1234
function: value= 5678
after   : value= 1234

인자 : parameters

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function my_function(){    local value=$1    echo "my_function= ${value}" }   # call my_function my_function 5678

결과 전달받기

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#!/bin/sh function my_function(){    local value=$1    echo "my_function= ${value}" }   # call my_function result=$(my_function 5678)   echo "my_function [ ${result} ]"

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function my_function(){     echo "argv: $1 $2"     return 10 }   # call my_function my_function "myname" "acepro" result=$?   echo "my_function [ ${result} ]"

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function my_function(){     echo "argv: $1 $2"     eval "$3='result'" }   # call my_function result="" my_function "myname" "acepro" result   echo "my_function [ ${result} ]"