system() function in c

[madhumathikv]

Hi,
I want to execute a command from c program to shell script.

I am using the system command to execute the commands but i cant give dynamic argument to it.
Is there any method to do this..
please any one help.

I am using the follwing command.
system("sudo /sbin/arp inserver01 -n | /bin/awk '{print $1}' | tail -1 ");

I want it to work like this..
system("sudo /sbin/arp %s -n | /bin/awk '{print $1}' | tail -1 ",gw);

[gpraghuram]

Hi,
I want to execute a command from c program to shell script.

I am using the system command to execute the commands but i cant give dynamic argument to it.
Is there any method to do this..
please any one help.

I am using the follwing command.
system("sudo /sbin/arp inserver01 -n | /bin/awk '{print $1}' | tail -1 ");

I want it to work like this..
system("sudo /sbin/arp %s -n | /bin/awk '{print $1}' | tail -1 ",gw);

HI,
Use a char array and do sprintf to print the values to the string and pass the array as argument to system call

char arr[100];
sprintf(arr,sudo /sbin/arp %s -n |  /bin/awk '{print $1}' | tail -1 ",gw);
system(arr);
 

Thanks
Raghuram