In-class Exercise: Linux Programmer's Manual

info.cpp

#include <cstdlib>
#include <iostream>

#include <sys/utsname.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <unistd.h>

using std::cout;
using std::endl;

int main(int argc, char *argv[])
{
    utsname info;
    auto ok = uname(&info);
    if (ok < 0) {
        perror("uname");
        return EXIT_FAILURE;
    }

    cout << argv[0] << " on " << info.sysname << " " << info.release << endl;

    for (auto i = 1; i < argc; i++) {
        auto filename = argv[i];

        struct stat stats;
        ok = stat(filename, &stats);
        if (ok < 0) {
            perror(filename);
            return EXIT_FAILURE;
        }

        cout << filename << ": " << stats.st_size << endl;
    }

    return EXIT_SUCCESS;
}