ckuid(1) UNIX System V(Essential Utilities) ckuid(1)
NAME
ckuid - prompt for and validate a user ID
SYNOPSIS
ckuid [ -Q ] [ -W width ] [ -m ] [ -d default ] [ -h help ] [ -e error ]
[ -p prompt ]
[ -k pid [ -s signal ] ]
erruid [ -W width ] [ -e error ]
helpuid [ -W width ] [ -m ] [ -h help ]
valuid input
DESCRIPTION
ckuid prompts a user and validates the response. It defines, among other
things, a prompt message whose response should be an existing user ID,
text for help and error messages, and a default value (which is returned
if the user responds with a 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 beginning or end of a message definition,
the default text is 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) is displayed.
Three visual tool modules are linked to the ckuid command. They are
erruid (which formats and displays an error message), helpuid (which
formats and displays a help message), and valuid (which validates a
response). These modules should be used in conjunction with FML objects.
In this instance, the FML object defines the prompt.
The options and arguments for this command are:
-Q Do not allow quit as a valid response.
-W Use width as the line length for prompt, help, and error messages.
-m Display a list of all logins when help is requested or when the
user makes an error.
-d The default value is default. The default is not validated and so
does not have to meet any criteria.
-h The help message is help.
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ckuid(1) UNIX System V(Essential Utilities) ckuid(1)
-e The error message is error.
-p The prompt message is prompt.
-k Send process ID pid a signal if the user chooses to abort.
-s When quit is chosen, send signal to the process whose pid is
specified by the -k option. If no signal is specified, use
SIGTERM.
input Input to be verified against /etc/passwd.
EXIT CODES
0 = Successful execution
1 = EOF on input
2 = Usage error
3 = User termination (quit)
NOTES
The default prompt for ckuid is:
Enter the login name of an existing user [?,q]
The default error message is:
ERROR - Please enter the login name of an existing user.
(If the -m option of ckuid is used, a list of valid users is also
displayed.)
The default help message is:
Please enter the login name of an existing user.
(If the -m option of ckuid is used, a list of valid users is also
displayed.)
When the quit option is chosen (and allowed), q is returned along with
the return code 3. The valuid module does not produce any output. It
returns zero for success and non-zero for failure.
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