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Document uname(1).

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This commit is contained in:
Nicholas De Nova 2017-02-05 13:41:07 -06:00
parent eec161761d
commit 912a5448c5
3 changed files with 50 additions and 28 deletions
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1
utils/Makefile
View file

@ -81,6 +81,7 @@ memstat.1 \
pager.1 \
passwd.1 \
readlink.1 \
uname.1 \
SBINS=\
chroot \

43
utils/uname.1 Normal file
View file

@ -0,0 +1,43 @@
.Dd January 27, 2017
.Dt UNAME 1
.Os
.Sh NAME
.Nm uname
.Nd write system information
.Sh SYNOPSIS
.Nm
.Op Fl amnprstv
.Sh DESCRIPTION
.Nm
writes the system information specified by its options.
If no options were passed,
.Nm
writes the kernel name.
.Pp
The options are as follows:
.Bl -tag -width "12345678"
.It Fl a
Write all available information.
.It Fl m , \-machine
Write the system architecture.
.It Fl n , \-nodename
Write the network node name.
.It Fl p , \-processor
Write the processor architecture.
.It Fl r , \-kernel-release
Write the kernel release version.
.It Fl s , \-kernel-name
Write the kernel name.
.It Fl t , \-tagline
Write the release tagline.
.It Fl v , \-kernel-version
Write the kernel build date.
.El
.Sh EXIT STATUS
.Nm
will exit 0 on success and non-zero otherwise.
.Sh SEE ALSO
.Xr kernelinfo 1 ,
.Xr uname 2 ,
.Xr machine 4 ,
.Xr sortix-release 4

34
utils/uname.c
View file

@ -14,13 +14,13 @@
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* uname.c
* Print system information.
* Write system information.
*/
#include <sys/utsname.h>
#include <err.h>
#include <errno.h>
#include <error.h>
#include <limits.h>
#include <stdbool.h>
#include <stdint.h>
@ -55,20 +55,8 @@ static void compact_arguments(int* argc, char*** argv)
}
}
static void help(FILE* fp, const char* argv0)
{
fprintf(fp, "Usage: %s [OPTION]...\n", argv0);
fprintf(fp, "Print certain system information.\n");
}
static void version(FILE* fp, const char* argv0)
{
fprintf(fp, "%s (Sortix) %s\n", argv0, VERSIONSTR);
}
int main(int argc, char* argv[])
{
const char* argv0 = argv[0];
int flags = 0;
for ( int i = 1; i < argc; i++ )
{
@ -92,9 +80,7 @@ int main(int argc, char* argv[])
case 't': flags |= PRINT_TAGLINE; break;
case 'v': flags |= PRINT_KERNELVER; break;
default:
fprintf(stderr, "%s: unknown option -- '%c'\n", argv0, c);
help(stderr, argv0);
exit(1);
errx(1, "unknown option -- '%c'", c);
}
}
else if ( !strcmp(arg, "--kernel-name") )
@ -111,26 +97,18 @@ int main(int argc, char* argv[])
flags |= PRINT_PROCESSOR;
else if ( !strcmp(arg, "--tagline") )
flags |= PRINT_TAGLINE;
else if ( !strcmp(arg, "--help") )
help(stdout, argv0), exit(0);
else if ( !strcmp(arg, "--version") )
version(stdout, argv0), exit(0);
else
{
fprintf(stderr, "%s: unknown option: %s\n", argv0, arg);
help(stderr, argv0);
exit(1);
}
errx(1, "unknown option: %s", arg);
}
compact_arguments(&argc, &argv);
if ( 1 < argc )
error(1, 0, "extra operand");
errx(1, "extra operand");
static struct utsname utsname;
if ( uname(&utsname) < 0 )
error(1, errno, "uname");
err(1,"uname");
if ( !flags )
flags = PRINT_KERNELNAME;