anyone help me!! i want compare system call with c programing.

[slackman]

i want to compare with command line

system("arp -en | grep eth1 | wc -l"); --> result about = 4

compare with

system("arp -en | grep eth0 | wc -l"); --> result about = 10

** i want to compare result (integer) command between command1 and command2


How to programing with C on linux.

[Lakshmipathi]

i want to compare with command line

system("arp -en | grep eth1 | wc -l"); --> result about = 4

compare with

system("arp -en | grep eth0 | wc -l"); --> result about = 10

** i want to compare result (integer) command between command1 and command2


How to programing with C on linux.

i'm not sure whether i understood ur problem...
in case you want to display the difference between two commands
try ,
#arp -en | grep eth0 > file1
#arp -en | grep eth1 > file2
#diff file1 file2

You can use these with in system() function.

[Franklin52]

You can accomplish this with the popen() function. An example of popen():

#include <stdio.h>
main()
{
  FILE *fp;
  char line[128];
   
  fp = popen("arp -en | grep eth1 | wc -l", "r");

  while ( fgets( line, sizeof line, fp))
  {
    printf("&#37;s", line);
  }
  pclose(fp);
}

Regards