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- display a prompt; verify and return a pathname
ckpath [-Q] [-W width] [-a | l] [-b | c | f | y] [-n [o | z]] [-rtwx] [-d default] [-h help] [-e error] [-p prompt] [-k pid [-s signal]]
/usr/sadm/bin/errpath [-W width] [-a | l] [-b | c | f | y] [-n [o | z]] [-rtwx] [-e error]
/usr/sadm/bin/helppath [-W width] [-a | l] [-b | c | f | y] [-n [o | z]] [-rtwx] [-h help]
/usr/sadm/bin/valpath [-a | l] [-b | c | f | y] [-n [o | z]] [-rtwx] input
The ckpath utility prompts a user and validates the response. It defines, among other things, a prompt message whose response should be a pathname, text for help and error messages, and a default value (which is returned if the user responds with a RETURN).
The pathname must obey the criteria specified by the first group of options. If no criteria is defined, the pathname must be for a normal file that does not yet exist. If neither -a (absolute) or -l (relative) is given, then either is assumed to be valid.
All messages are limited in length to 79 characters and are formatted automatically. Tabs and newlines are removed after a single white space character in a message definition, but spaces are not removed. 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 EXAMPLES) is displayed.
Three visual tool modules are linked to the ckpath command. They are errpath (which formats and displays an error message on the standard output), helppath (which formats and displays a help message on the standard output), and valpath (which validates a response).
The following options are supported:
Pathname must be an absolute path.
Pathname must be a block special file.
Pathname must be a character special file.
Defines the default value as default. The default is not validated and so does not have to meet any criteria.
Defines the error message as error.
Pathname must be a regular file.
Defines the help message as help.
Specifies that process ID pid is to be sent a signal if the user chooses to quit.
Pathname must be a relative path.
Pathname must not exist (must be new).
Pathname must exist (must be old).
Defines the prompt message as prompt.
Specifies that quit is not allowed as a valid response.
Pathname must be readable.
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, SIGTERM is used.
Pathname must be creatable (touchable). Pathname will be created if it does not already exist.
Pathname must be writable.
Specify that prompt, help and error messages be formatted to a line length of width.
Pathname must be executable.
Pathname must be a directory.
Pathname must have a file having a size greater than zero bytes.
The following operand is supported:
Input to be verified against validation options.
The text of the default messages for ckpath depends upon the criteria options that have been used.
Example 1 Default prompt
An example default prompt for ckpath (using the -a option) is:
example% ckpath -a Enter an absolute pathname [?,q]
Example 2 Default error message
An example default error message (using the -a option) is:
example% /usr/sadm/bin/errpath -a ERROR: A pathname is a filename, optionally preceded by parent directories. The pathname you enter: - must begin with a slash (/)
Example 3 Default help message
An example default help message (using the -a option) is:
example% /usr/sadm/bin/helppath -a A pathname is a filename, optionally preceded by parent directories. The pathname you enter: - must begin with a slash (/)
Example 4 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 5 Using the valpath module
The valpath module will produce a usage message on stderr. It returns 0 for success and non-zero for failure.
example% /usr/sadm/bin/valpath usage: valpath [-[a|l][b|c|f|y][n|[o|z]]rtwx] input . . .
The following exit values are returned:
EOF on input, or negative width on -W option, or usage error.
Mutually exclusive options.
User termination (quit).
Mutually exclusive options.
See attributes(5) for descriptions of the following attributes: