uname.c - sbase - suckless unix tools
 (HTM) git clone git://git.suckless.org/sbase
 (DIR) Log
 (DIR) Files
 (DIR) Refs
 (DIR) README
 (DIR) LICENSE
       ---
       uname.c (952B)
       ---
            1 /* See LICENSE file for copyright and license details. */
            2 #include <sys/utsname.h>
            3 
            4 #include <stdio.h>
            5 
            6 #include "util.h"
            7 
            8 static void
            9 usage(void)
           10 {
           11         eprintf("usage: %s [-amnrsv]\n", argv0);
           12 }
           13 
           14 int
           15 main(int argc, char *argv[])
           16 {
           17         struct utsname u;
           18         int mflag = 0, nflag = 0, rflag = 0, sflag = 0, vflag = 0;
           19 
           20         ARGBEGIN {
           21         case 'a':
           22                 mflag = nflag = rflag = sflag = vflag = 1;
           23                 break;
           24         case 'm':
           25                 mflag = 1;
           26                 break;
           27         case 'n':
           28                 nflag = 1;
           29                 break;
           30         case 'r':
           31                 rflag = 1;
           32                 break;
           33         case 's':
           34                 sflag = 1;
           35                 break;
           36         case 'v':
           37                 vflag = 1;
           38                 break;
           39         default:
           40                 usage();
           41         } ARGEND
           42 
           43         if (argc)
           44                 usage();
           45 
           46         if (uname(&u) < 0)
           47                 eprintf("uname:");
           48 
           49         if (sflag || !(nflag || rflag || vflag || mflag))
           50                 putword(stdout, u.sysname);
           51         if (nflag)
           52                 putword(stdout, u.nodename);
           53         if (rflag)
           54                 putword(stdout, u.release);
           55         if (vflag)
           56                 putword(stdout, u.version);
           57         if (mflag)
           58                 putword(stdout, u.machine);
           59         putchar('\n');
           60 
           61         return fshut(stdout, "<stdout>");
           62 }