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User Commands ckrange(1)
NAME
ckrange, errange, helprange, valrange - prompts for and
validates an integer
SYNOPSIS
ckrange [-Q] [-W width] [-l lower] [-u upper] [-b base] [-
d default] [-h help] [-e error] [-p prompt] [ -k pid [-
s signal]]
/usr/sadm/bin/errange [-W width] [-e error] [-l lower] [-
u upper] [-b base]
/usr/sadm/bin/helprange [-W width] [-h help] [-l lower] [-
u upper] [-b base]
/usr/sadm/bin/valrange [-l lower] [-u upper] [-b base] input
DESCRIPTION
The ckrange utility prompts a user for an integer between a
specified range and determines whether this response is
valid. It defines, among other things, a prompt message
whose response should be an integer in the range specified,
text for help and error messages, and a default value (which
is returned if the user responds with a <RETURN>).
This command also defines a range for valid input. If either
the lower or upper limit is left undefined, then the range
is bounded on only one end.
All messages are limited in length to 79 characters and are
formatted automatically. Tabs and newlines are removed after
a single whitespace character in a message definition, but
spaces are not removed. When a tilde is placed at the begin-
ning or end of a message definition, the default text will
be inserted at that point, allowing both custom text and the
default text to be displayed.
If the prompt, help or error message is not defined, the
default message (as defined under EXAMPLES) is displayed.
Three visual tool modules are linked to the ckrange command.
They are errange (which formats and displays an error mes-
sage on the standard output), helprange (which formats and
displays a help message on the standard output), and val-
range (which validates a response). These modules should be
used in conjunction with Framed Access Command Environment
(FACE) objects. In this instance, the FACE object defines
the prompt.
Note: Negative "input" arguments confuse getopt in valrange.
By inserting a "-" before the argument, getopt processing
will stop. See getopt(1) and intro(1) about getopt parameter
SunOS 5.10 Last change: 14 Sep 1992 1
User Commands ckrange(1)
handling. getopt is used to parse positional parameters and
to check for legal options.
OPTIONS
The following options are supported:
-b base Defines the base for input. Must be 2 to 36,
default is 10. Base conversion uses
strtol(3C). Output is always base 10.
-d default Defines the default value as default.
default is converted using strtol(3C) in the
desired base. Any characters invalid in the
specified base will terminate the strtol
conversion without error.
-e error Defines the error message as error.
-h help Defines the help message as help.
-k pid Specifies that process ID pid is to be sent
a signal if the user chooses to quit.
-l lower Defines the lower limit of the range as
lower. Default is the machine's largest
negative long.
-p prompt Defines the prompt message as prompt.
-Q Specifies that quit will not be allowed as a
valid response.
-s signal Specifies that the process ID pid defined
with the -k option is to be sent signal sig-
nal when quit is chosen. If no signal is
specified, SIGTERM is used.
SunOS 5.10 Last change: 14 Sep 1992 2
User Commands ckrange(1)
-u upper Defines the upper limit of the range as
upper. Default is the machine's largest
positive long.
-W width Specifies that prompt, help and error mes-
sages will be formatted to a line length of
width.
OPERANDS
The following operand is supported:
input Input to be verified against upper and lower
limits and base.
EXAMPLES
Example 1: Default base 10 prompt
The default base 10 prompt for ckrange is:
example% ckrange
Enter an integer between lower_bound and
upper_bound [lower_bound-upper_bound,?,q]:
Example 2: Default base 10 error message
The default base 10 error message is:
example% /usr/sadm/bin/errange
ERROR: Please enter an integer between lower_bound \
and upper_bound.
Example 3: Default base 10 help message
The default base 10 help message is:
example% /usr/sadm/bin/helprange
Please enter an integer between lower_bound and upper_bound.
Example 4: Changing messages for a base other than 10
The messages are changed from ``integer'' to ``base base
integer'' if the base is set to a number other than 10. For
example,
example% /usr/sadm/bin/helprange -b 36
SunOS 5.10 Last change: 14 Sep 1992 3
User Commands ckrange(1)
Example 5: Using the quit option
When the quit option is chosen (and allowed), q is returned
along with the return code 3. Quit input gets a trailing
newline.
Example 6: Using the valrange module
The valrange module will produce a usage message on stderr.
It returns 0 for success and non-zero for failure.
example% /usr/sadm/bin/valrange
usage: valrange [-l lower] [-u upper] [-b base] input
EXIT STATUS
The following exit values are returned:
0 Successful execution.
1 EOF on input, or negative width on -W option, or
usage error.
2 Usage error.
3 User termination (quit).
ATTRIBUTES
See attributes(5) for descriptions of the following attri-
butes:
____________________________________________________________
| ATTRIBUTE TYPE | ATTRIBUTE VALUE |
|_____________________________|_____________________________|
| Availability | SUNWcsu |
|_____________________________|_____________________________|
SEE ALSO
intro(1), face(1), getopt(1), strtol(3C), attributes(5),
signal.h(3HEAD)
SunOS 5.10 Last change: 14 Sep 1992 4
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