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	uname.c - sbase - suckless unix tools
	git clone git://git.suckless.org/sbase
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	---
	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 }