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/**
* usa execvp per eseguire un comando il cui nome e i parametri
* (in numero arbitrario) sono accettati da terminale interattivamente
*/
#include
#include
#include
#include
#define MAX_ARGS 20
#define BUFSIZE 2048
int main(int argc, char *argv[]) {
char buffer[BUFSIZE];
char *args[MAX_ARGS];
int len, i=0;
printf("comando da eseguire (senza parametri): ");
fgets(buffer, BUFSIZE, stdin);
len = strlen(buffer);
if (buffer[len-1] == '\n') // elimina il carattere di 'ritorno a capo' finale
buffer[--len] = '\0';
args[i] = strdup(buffer);
i++;
do {
printf("parametro successivo: ");
fgets(buffer, BUFSIZE, stdin);
len = strlen(buffer);
if (buffer[len-1] == '\n')
buffer[--len] = '\0';
if (len == 0)
break;
args[i] = strdup(buffer);
i++;
} while (i < (MAX_ARGS-1));
args[i] = NULL; // marca la fine della lista di argomenti
execvp(args[0], args); // eseguo il comando con i parametri specificati
printf("L'invocazione di '%s' e' fallita!\n", args[0]);
exit(1);
}