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/* uname - return system name
* Copyright (C) 2022 Ferass EL HAFIDI
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <https://www.gnu.org/licenses/>.
*/
#include <unistd.h>
#include <stdio.h>
#include <sys/utsname.h>
#include <errno.h>
#include "version.h"
#ifndef COMPILETIME
#define COMPILETIME
#endif
int getopt(int argc, char *const argv[], const char *optstring);
void printUsage();
int main(int argc, char *const argv[]) {
int argument;
struct utsname name;
char param[256];
for (int i = 0; i < 256; i++) param[i] = 0;
while ((argument = getopt(argc, argv, "amnrsv")) != -1) {
if (argument == '?') {
printUsage();
return 1;
}
param[argument] = argument;
if (argument == 'a') {
param['s'] = 's';
param['n'] = 'n';
param['r'] = 'r';
param['v'] = 'v';
param['m'] = 'm';
}
}
uname(&name);
if (errno) return errno;
if (argc > 1) {
if (param['s']) printf("%s ", name.sysname);
if (param['n']) printf("%s ", name.nodename);
if (param['r']) printf("%s ", name.release);
if (param['v']) printf("%s ", name.version);
if (param['m']) printf("%s", name.machine);
printf("\n");
}
else
printf("%s\n", name.sysname);
return 0;
}
void printUsage() {
printf("Ferass' Base System. (%s)\n\n"
"Usage: uname [-amnrsv] \n\n"
"Return system name.\n\n"
"\t-a\tSame as -mnrsv\n"
"\t-m\tWrite the hardware's architecture\n"
"\t-n\tWrite the network node hostname\n"
"\t-r\tWrite the operating system release\n"
"\t-s\tWrite the name of the operating system implementation\n"
"\t-v\tWrite the current version of this release of the operating "
"system implementation\n", COMPILETIME);
}
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