kunpengku

#include <stdio.h>

int main()
{

  int num;
	int i,j;
	printf("请输入您想生成的三角形高度： ");
	scanf("%d",&num);

kunpengku

#include <stdio.h>
int main(void)
{
	 
 
	char i,j,k;
	for(i = 0; i < 6; i++)
	{ 
		for(j = 'F',k = 0; j >= 'A',k <=i; j--,k++) //一个for里可以干多件事情,相反也行.
		{

kunpengku

#include <stdio.h>
#include <ctype.h>
#define STOP '|'
 
int main(void)
{
  char c;
  char prev;
	long n_chars = 0L;
	int n_lines = 0;

kunpengku

#include<stdio.h>

int main(int argc,char *argv[])
{
	int source;
	int sum = 0;
	source = atoi(argv[1]);
	
	while(source/10)
	{

kunpengku

#!/bin/bash

LOG_DIR=/var/log
ROOT_UID=0
LINES=50
E_XCD=66
E_NOTROOT=67


if [ "$UID" -ne "$ROOT_UID" ]

kunpengku

去掉最后一个字符
time1=${time1%?}

date命令
##begin
date +'%H:%M' 后面是输出格式
date -d'1 minute ago' +'%H:%M' 时间先做偏移，再按照格式输出，这个加号不可少
##end

时间做比较，其实是比较字符串。

kunpengku

#!/bin/bash
#delete file which size equal zero

ls -l > .ll.txt

while read dt
do 
        size=`echo "$dt" | awk '{print $5}'`
        if [ "$size" == "0" ]
        then 

kunpengku

#!/bin/bash

File=/etc/fstab

{
read line1
read line2
} < $File

echo "First line is $line1"

kunpengku

#!/bin/bash

SUCCESS=0
E_NOARGS=65

if [ -z "$1" ]
then
        echo "Usage:`basename $0` rpm-file"
        exit $E_NOARGS
fi

kunpengku

#!/bin/bash

BACKUPFILE=backup.$(date +%Y%m%d)

archive=${1:-$BACKUPFILE}

tar cvf - `find -mtime -1 -type f -print` > $archive.tar

# find . -mtime -1 -type f -exec tar rvf "$archive.tar" '{}' \;