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   ¡¡#Program date
¡¡¡¡#usageto ::show the date in this way (×¢ÊÍ)
¡¡¡¡echo "Mr.$USER,Today is:"
¡¡¡¡echo date "+%B%d%A"
¡¡¡¡echo "Whish you a lucky day !"
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¡¡¡¡[beichen@localhost bin]$ date
¡¡¡¡Mr.beichen,Today is:
¡¡¡¡January 13 Friday
¡¡¡¡Whish you a lucky day !
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¡¡¡¡[beichen@localhost /]$ bash date
¡¡¡¡Mr.beichen,Today is:
¡¡¡¡January 13 Friday
¡¡¡¡Whish you a lucky day !
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¡¡¡¡[beichen@localhost /]$ .date
¡¡¡¡Mr.beichen,Today is:
¡¡¡¡January 13 Friday
¡¡¡¡Whish you a lucky day !
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/*
* fork_test.c
* version 1
* Created on: 2010-5-29
* Author: wangth
*/
#include <unistd.h>;
#include <stdio.h>
int main ()
{
pid_t fpid; //fpid±íʾforkº¯Êý·µ»ØµÄÖµ
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