72 lines
1.1 KiB
C
72 lines
1.1 KiB
C
/* See LICENSE file for copyright and license details. */
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <unistd.h>
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#include <sys/utsname.h>
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#include "util.h"
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static void print(const char *);
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int
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main(int argc, char *argv[])
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{
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bool mflag = false;
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bool nflag = false;
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bool rflag = false;
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bool sflag = false;
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bool vflag = false;
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char c;
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struct utsname u;
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while((c = getopt(argc, argv, "amnrsv")) != -1)
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switch(c) {
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case 'a':
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mflag = nflag = rflag = sflag = vflag = true;
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break;
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case 'm':
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mflag = true;
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break;
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case 'n':
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nflag = true;
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break;
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case 'r':
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rflag = true;
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break;
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case 's':
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sflag = true;
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break;
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case 'v':
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vflag = true;
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break;
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default:
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exit(EXIT_FAILURE);
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}
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if(uname(&u) == -1)
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eprintf("uname:");
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if(sflag || !(nflag || rflag || vflag || mflag))
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print(u.sysname);
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if(nflag)
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print(u.nodename);
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if(rflag)
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print(u.release);
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if(vflag)
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print(u.version);
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if(mflag)
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print(u.machine);
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putchar('\n');
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return EXIT_SUCCESS;
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}
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void
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print(const char *s)
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{
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static bool first = true;
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if(!first)
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putchar(' ');
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fputs(s, stdout);
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first = false;
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}
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