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Add -d flag that prints domain only.

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PR:		212875
Submitted by:	Ben RUBSON <ben.rubson@gmail.com>
Reviewed by:	pi
This commit is contained in:
Marcelo Araujo 2016-11-08 11:36:33 +00:00
parent 9a639daf77
commit 31500ce90d
2 changed files with 17 additions and 6 deletions
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7
bin/hostname/hostname.1
View File

@ -29,7 +29,7 @@
.\" @(#)hostname.1 8.2 (Berkeley) 4/28/95
.\" $FreeBSD$
.\"
.Dd December 7, 2006
.Dd November 9, 2016
.Dt HOSTNAME 1
.Os
.Sh NAME
@ -37,7 +37,8 @@
.Nd set or print name of current host system
.Sh SYNOPSIS
.Nm
.Op Fl fs
.Op Fl f
.Op Fl s|d
.Op Ar name-of-host
.Sh DESCRIPTION
The
@ -62,6 +63,8 @@ This is the default behavior.
.It Fl s
Trim off any domain information from the printed
name.
.It Fl d
Only print domain information.
.El
.Sh SEE ALSO
.Xr gethostname 3 ,

16
bin/hostname/hostname.c
View File

@ -54,11 +54,12 @@ static void usage(void) __dead2;
int
main(int argc, char *argv[])
{
int ch, sflag;
int ch, sflag, dflag;
char *p, hostname[MAXHOSTNAMELEN];
sflag = 0;
while ((ch = getopt(argc, argv, "fs")) != -1)
dflag = 0;
while ((ch = getopt(argc, argv, "fsd")) != -1)
switch (ch) {
case 'f':
/*
@ -70,6 +71,9 @@ main(int argc, char *argv[])
case 's':
sflag = 1;
break;
case 'd':
dflag = 1;
break;
case '?':
default:
usage();
@ -77,7 +81,7 @@ main(int argc, char *argv[])
argc -= optind;
argv += optind;
if (argc > 1)
if (argc > 1 || (sflag && dflag))
usage();
if (*argv) {
@ -90,6 +94,10 @@ main(int argc, char *argv[])
p = strchr(hostname, '.');
if (p != NULL)
*p = '\0';
} else if (dflag) {
p = strchr(hostname, '.');
if (p != NULL)
strcpy(hostname, ++p);
}
(void)printf("%s\n", hostname);
}
@ -100,6 +108,6 @@ static void
usage(void)
{
(void)fprintf(stderr, "usage: hostname [-fs] [name-of-host]\n");
(void)fprintf(stderr, "usage: hostname [-f] [s|d] [name-of-host]\n");
exit(1);
}