ckgid(1) USER COMMANDS ckgid(1)
NAME
ckgid, errgid, helpgid, valgid - prompts for and validates a
group id
SYNOPSIS
ckgid [-Q] [-W width] [-m] [-d default] [-h help] [-e error]
[-p prompt]
[-k pid [-s signal]]
errgid [-W] [-e error]
helpgid [-W] [-m] [-h help]
valgid input
DESCRIPTION
ckgid prompts a user and validates the response. It
defines, among other things, a prompt message whose response
should be an existing group ID, text for help and error mes-
sages, and a default value (which will be returned if the
user responds with a carriage return). All messages are
limited in length to 70 characters and are formatted
automatically. Any white space used in the definition
(including newline) is stripped. The -W option cancels the
automatic formatting. 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 NOTES) will be displayed. Three visual tool modules
are linked to the ckgid command. They are errgid (which
formats and displays an error message), helpgid (which for-
mats and displays a help message), and valgid (which vali-
dates a response). These modules should be used in conjunc-
tion with FML objects. In this instance, the FML object
defines the prompt. The options and arguments for this com-
mand are:
-Q Specifies that quit will not be allowed as a
valid response.
-W width Specifies that prompt, help and error messages
will be formatted to a line length of width.
-m Displays a list of all groups when help is
requested or when the user makes an error.
-d default Defines the default value as default. The
default is not validated and so does not have to
meet any criteria.
-h help Defines the help messages as help.
-e error Defines the error message as error.
-p prompt Defines the prompt message as prompt.
-k pid Specifies that process ID pid is to be sent a
signal if the user chooses to abort.
-s signal Specifies that the process ID pid defined with
the -k option is to be sent signal signal when
quit is chosen. If no signal is specified,
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ckgid(1) USER COMMANDS ckgid(1)
SIGTERM is used.
input Input to be verified against /etc/group
EXIT CODES
0 = Successful execution
1 = EOF on input
2 = Usage error
3 = User termination (quit)
NOTES
The default prompt for ckgid is:
Enter the name of an existing group [?,q]:
The default error message is:
ERROR - Please enter the name of an existing group.
(if the -m option of ckgid is used, a list of valid groups
is displayed here)
The default help message is:
Please enter an existing group name.
(if the -m option of ckgid is used, a list of valid groups
is displayed here)
When the quit option is chosen (and allowed), q is returned
along with the return code 3. The valgid module will not pro-
duce any output. It returns zero for success and non-zero for
failure.
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