sbase/uname.c

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C
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/* See LICENSE file for copyright and license details. */
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <sys/utsname.h>
#include "util.h"
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static void
usage(void)
{
eprintf("usage: %s [-amnrsv]\n", argv0);
}
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int
main(int argc, char *argv[])
{
bool mflag = false;
bool nflag = false;
bool rflag = false;
bool sflag = false;
bool vflag = false;
struct utsname u;
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ARGBEGIN {
case 'a':
mflag = nflag = rflag = sflag = vflag = true;
break;
case 'm':
mflag = true;
break;
case 'n':
nflag = true;
break;
case 'r':
rflag = true;
break;
case 's':
sflag = true;
break;
case 'v':
vflag = true;
break;
default:
usage();
} ARGEND;
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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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putword(u.sysname);
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if(nflag)
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putword(u.nodename);
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if(rflag)
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putword(u.release);
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if(vflag)
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putword(u.version);
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if(mflag)
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putword(u.machine);
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putchar('\n');
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return EXIT_SUCCESS;
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}