Commit | Line | Data |
---|---|---|
f1811a66 JH |
1 | /* |
2 | * uname - print system information. Jeff Comstock - Bloomington, MN USA 1992 | |
3 | * Usage: uname [-asnrvm] | |
4 | * -s prints system name | |
5 | * -n prints nodename | |
6 | * -r prints software release | |
7 | * -v prints os version | |
8 | * -m prints machine name | |
9 | * -a prinst all the above information | |
10 | */ | |
11 | ||
12 | #ifndef lint | |
b9269098 | 13 | static char rcsid[] = "$Id: uname.c,v 1.2 1994/01/24 02:14:26 rgrimes Exp $"; |
f1811a66 JH |
14 | #endif /* not lint */ |
15 | ||
16 | #include <stdio.h> | |
17 | #include <unistd.h> | |
18 | #include <sysexits.h> | |
19 | #include <sys/utsname.h> | |
20 | ||
21 | #define SYSNAME 0 | |
22 | #define NODENAME 1 | |
23 | #define RELEASE 2 | |
24 | #define VERSION 3 | |
25 | #define MACHINE 4 | |
26 | ||
27 | struct utsname u; | |
28 | ||
29 | struct utstab { | |
30 | char *str; | |
31 | int requested; | |
32 | } uttab[] = { | |
33 | { u.sysname, 0 }, | |
34 | { u.nodename, 0 }, | |
35 | { u.release, 0 }, | |
36 | { u.version, 0 }, | |
37 | { u.machine, 0 } | |
38 | }; | |
39 | ||
40 | main(int argc, char **argv) { | |
41 | char *opts="amnrsv"; | |
42 | register int c,space, all=0; | |
43 | ||
44 | if ( ! uname(&u) ) { | |
45 | if ( argc == 1 ) { | |
b9269098 | 46 | puts(u.sysname); |
f1811a66 JH |
47 | } else { |
48 | while ( (c = getopt(argc,argv,opts)) != -1 ) { | |
49 | switch ( c ) { | |
50 | case 'a' : all++; | |
51 | break; | |
52 | case 'm' : uttab[MACHINE].requested++; | |
53 | break; | |
54 | case 'n' : uttab[NODENAME].requested++; | |
55 | break; | |
56 | case 'r' : uttab[RELEASE].requested++; | |
57 | break; | |
58 | case 's' : uttab[SYSNAME].requested++; | |
59 | break; | |
60 | case 'v' : uttab[VERSION].requested++; | |
61 | break; | |
62 | } | |
63 | } | |
64 | space=0; | |
65 | for(c=0; c <= MACHINE; c++) { | |
66 | if ( uttab[c].requested || all ) { | |
67 | if ( space ) | |
68 | putchar(' '); | |
69 | printf("%s", uttab[c].str); | |
70 | space++; | |
71 | } | |
72 | } | |
73 | puts(""); | |
74 | } | |
75 | exit (EX_OK); | |
76 | } else { | |
77 | perror("uname"); | |
78 | exit (EX_OSERR); | |
79 | } | |
80 | } |