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Add an -o filename option to have the output written to a file.

Browse Source 
This option is present on most uuidgen(1) implementations even
though normal file redirection can be used to achieve the same.

Submitted by: Hiten Pandya <hiten@unixdaemons.com>
This commit is contained in:
Marcel Moolenaar 2003-03-15 02:27:10 +00:00
parent 11b8cdf76c
commit 4832865490
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=112252
4 changed files with 44 additions and 12 deletions
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11
bin/uuidgen/uuidgen.1
View File

@ -34,14 +34,15 @@
.Nm
.Op Fl 1
.Op Fl n Ar count
.Op Fl o Ar filename
.Sh DESCRIPTION
The
.Nm
utility by default generates a single universally unique identifier (UUID),
also known as a globally unique identifier (GUID).
The UUID is written to stdout.
The following options can be used to change the number of identifiers
and the method used:
The UUID is written to stdout by default.
The following options can be used to change the behaviour of
.Nm :
.Bl -tag -width indent
.It Fl 1
This option only has effect if multiple identifiers are to be generated and
@ -52,6 +53,10 @@ to not generate them in batch, but one at a time.
This option controls the number of identifiers generated.
By default, multiple
identifiers are generated in batch.
.It Fl o
Redirect output to
.Ar filename
instead of stdout.
.El
.Pp
Batched generation yields a dense set of identifiers in such a way that there

17
bin/uuidgen/uuidgen.c
View File

@ -37,20 +37,22 @@ __FBSDID("$FreeBSD$");
static void
usage(void)
{
(void)fprintf(stderr, "usage: uuidgen [-1] [-n count]\n");
(void)fprintf(stderr, "usage: uuidgen [-1] [-n count] [-o filename]\n");
exit(1);
}
int
main(int argc, char *argv[])
{
FILE *fp;
uuid_t *store, *uuid;
char *p;
int ch, count, i, iterate;
count = -1; /* no count yet */
fp = stdout; /* default output file */
iterate = 0; /* not one at a time */
while ((ch = getopt(argc, argv, "1n:")) != -1)
while ((ch = getopt(argc, argv, "1n:o:")) != -1)
switch (ch) {
case '1':
iterate = 1;
@ -62,6 +64,13 @@ main(int argc, char *argv[])
if (*p != 0 || count < 1)
usage();
break;
case 'o':
if (fp != stdout)
errx(1, "multiple output files not allowed");
fp = fopen(optarg, "w");
if (fp == NULL)
err(1, "fopen");
break;
default:
usage();
}
@ -93,10 +102,12 @@ main(int argc, char *argv[])
uuid = store;
while (count--) {
uuid_to_string(uuid++, &p, NULL);
printf("%s\n", p);
fprintf(fp, "%s\n", p);
free(p);
}
free(store);
if (fp != stdout)
fclose(fp);
return (0);
}

11
usr.bin/uuidgen/uuidgen.1
View File

@ -34,14 +34,15 @@
.Nm
.Op Fl 1
.Op Fl n Ar count
.Op Fl o Ar filename
.Sh DESCRIPTION
The
.Nm
utility by default generates a single universally unique identifier (UUID),
also known as a globally unique identifier (GUID).
The UUID is written to stdout.
The following options can be used to change the number of identifiers
and the method used:
The UUID is written to stdout by default.
The following options can be used to change the behaviour of
.Nm :
.Bl -tag -width indent
.It Fl 1
This option only has effect if multiple identifiers are to be generated and
@ -52,6 +53,10 @@ to not generate them in batch, but one at a time.
This option controls the number of identifiers generated.
By default, multiple
identifiers are generated in batch.
.It Fl o
Redirect output to
.Ar filename
instead of stdout.
.El
.Pp
Batched generation yields a dense set of identifiers in such a way that there

17
usr.bin/uuidgen/uuidgen.c
View File

@ -37,20 +37,22 @@ __FBSDID("$FreeBSD$");
static void
usage(void)
{
(void)fprintf(stderr, "usage: uuidgen [-1] [-n count]\n");
(void)fprintf(stderr, "usage: uuidgen [-1] [-n count] [-o filename]\n");
exit(1);
}
int
main(int argc, char *argv[])
{
FILE *fp;
uuid_t *store, *uuid;
char *p;
int ch, count, i, iterate;
count = -1; /* no count yet */
fp = stdout; /* default output file */
iterate = 0; /* not one at a time */
while ((ch = getopt(argc, argv, "1n:")) != -1)
while ((ch = getopt(argc, argv, "1n:o:")) != -1)
switch (ch) {
case '1':
iterate = 1;
@ -62,6 +64,13 @@ main(int argc, char *argv[])
if (*p != 0 || count < 1)
usage();
break;
case 'o':
if (fp != stdout)
errx(1, "multiple output files not allowed");
fp = fopen(optarg, "w");
if (fp == NULL)
err(1, "fopen");
break;
default:
usage();
}
@ -93,10 +102,12 @@ main(int argc, char *argv[])
uuid = store;
while (count--) {
uuid_to_string(uuid++, &p, NULL);
printf("%s\n", p);
fprintf(fp, "%s\n", p);
free(p);
}
free(store);
if (fp != stdout)
fclose(fp);
return (0);
}