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   kimgs0725
   bash for¹®¿¡ ´ëÇؼ­...

http://www.hackerschool.org/HS_Boards/zboard.php?id=QNA_ETC&no=380 [º¹»ç]


Á¦°¡ ´ëÇм±¹èÇÑÅ× ÇÑ ÆÄÀÏÀ» brute force¸¦ ÀÌ¿ëÇØ ¾ÏÈ£¸¦ ¾Ë¾Æ³»¶ó´Âµ¥

for i in $(seq 1 10000)
>do
>echo $i $(./homework $i)
>done

ÀÌ·¨´Âµ¥ ³Ê¹« ¸¹ÀÌ Ãâ·ÂµÇ´Â °Å¿¹¿ä..

±×·¡¼­ ¼±¹è´Â Ãâ·Â°á°ú¸¦ ºó ¹®¼­¿¡ ÀúÀåÇ϶ó´Âµ¥

±¸±ÛÀ» ã¾ÆºÃ´Âµ¥µµ ¾î¶»°Ô ÇÏ´ÂÁö ¸ô¶ó¼­ Áú¹®ÇÕ´Ï´Ù.

¾î¶»°Ô Ãâ·Â°á°ú¸¦ ÀúÀåÇϳª¿ä?

¾Æ½Ã´Â ºÐ ÀÖÀ¸½Ã¸é ´ñ±Û ´Þ¾ÆÁÖ½Ã¸é °¨»çÇÕ´Ï´Ù.

  Hit : 2704     Date : 2011/09/15 11:29



    
prosthetics ¸®´ÙÀÌ·ºÆ® 2011/09/16  
kimgs0725 Àú... Á¶±Ý ±¸Ã¼ÀûÀ¸·Î ¾Ë·ÁÁÖ¸é ¾ÈµÉ±î¿ä? 2011/09/18  
´¾´¾ ¿¹Á¦ Çϳª º¸¿©µå¸±°Ô¿ä

homework.c
#include <stdio.h>
int main(int argc, char **argv){
if(atoi(argv[1])==5432){
printf("You tried : %s,Good!\n",argv[1]);
}
else{
printf("You tried : %s,Nah~\n",argv[1]);
}
return 0;
}

[root@localhost ~]# for i in $(seq 1 10000); do echo $i $(./homework $i >> a.txt); done
[root@localhost ~]# cat a.txt | grep Good
You tried : 5432,Good!
2011/09/19  
´¾´¾ À§¿¡ ÀÖ´Â
for i in $(seq 1 10000); do echo $i $(./homework $i >> a.txt); done
¿¡¼­
echo $i $(./homework $i >> a.txt);
¸¦
echo $i $(./homework $i > a.txt):
·Î ÇÏ½Ã¸é ½ÇÇàµÉ¶§¸¶´Ù µ¤¾î½áÁö±â ¶§¹®¿¡ °á°ú°¡ ¾È³ª¿É´Ï´Ù~
2011/09/19  
793   À½³È ·¹º§1´Ü°è ¾î¶°ÄÉ ÇؾßÇϴ°ÇÁö ¤Ð[2]     zzzguscjf
11/12 2607
792   ÁøÁ¤ÇÑ "ÇØÄ¿"ºÐµé ²À ºÁÁÖ¼¼¿ä!!![4]     rlatkddusdl
07/12 2784
791   ÁøÂ¥ ÀÏ·ù ÇØÄ¿ºÐµé...[1]     ±ÙµÎ¿î
03/12 3637
790   ÁøÂ¥ ´ä´ä ¤Ð¤Ð..[3]     winkivy
04/27 3434
789   Áø±Þ½ÃÇè     Error123
07/23 2442
788   BACKTRACK ½áº¸½ÅºÐ[1]     nsh009
08/04 2850
  bash for¹®¿¡ ´ëÇؼ­...[4]     kimgs0725
09/15 2703
786   BlogSpear Áú¹®ÀÔ´Ï´Ù.[2]     ho7241
06/19 3224
785   BOF shell code ¸¸µå´Âµ¥ Áú¹®ÀÌ ÀÖ½À´Ï´Ù[2]     rlaheehoon
04/23 2610
784   BOF °ø°ÝÀÌ kernel ¹öÁ¯¿¡ µû¶ó µÉ¶§µµ ÀÖ°í ¾ÈµÉ¶§µµ ÀÖ³ª¿ä?[2]     rlaheehoon
04/25 4024
783   BOF ¿Õ±âÃÊÆí¿¡ ³ª¿Â °Í ´ë·Î ½Ç½ÀÀ» ÇÏ·Á°íÇϴµ¥¿ä[1]     ggdg12
05/29 3606
782   bof ¿øÁ¤´ë ¸®´ª½º¿¡¼­ ÇÏ·Á¸é??[2]     hipro
04/12 2536
781   BSFC ½Ã½ºÅÛÀ̶ó´Â°ÍÀÌ ¹«¾ùÀΰ¡¿ä?     ninenight
04/16 4171
780   c ¾ð¾î ½ºÅ³ °¡¸£ÃÄ Áִ å ÃßõÇØÁà¿ä[2]     sidemirror
01/11 4053
779   C++´Ù¿î·Îµå °ü·Ã Áú¹®[1]     zzzguscjf
11/06 2642
778   C,C++°ú ÇØÅ·ÀÇ °ü·Ã¼º[2]     dony22
11/25 2740
777   Çáµå¿þ¾î ÇØÅ·¿¡ °üÇؼ­ Áú¹®ÇÕ´Ï´Ù.[1]     ggdg12
08/19 2607
776   ÇÁ·Î±×·¡¹Ö °øºÎ À¢¸¸Å­ ÇÏ¸é ±×´ÙÀ½Àº...?[2]     ±ÙµÎ¿î
02/25 2727
775   ÇÁ·Î±×·¥¹®ÀÇ µå¸³´Ï´Ù.     jk10211
12/26 2450
774   ÇÁ¸®Áðºê·¹ÀÌÅ© ½ÃÁð4 ñé[1]     13579
09/29 3151
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