val(1)

val -- validate an SCCS file

Synopsis

val -

val [-s] [-rSID] [-mname] [-ytype] file ...

Description

val determines if the specified file is an SCCS file meeting the characteristics specified by the optional argument list. Arguments to val may appear in any order. The arguments consist of keyletter arguments, which begin with a -, and named files.

val has a special argument, -, which causes reading of the standard input until an end-of-file condition is detected. Each line read is independently processed as if it were a command line argument list.

val generates diagnostic messages on standard error for each command line and file processed, and also returns a single 8-bit code on exit as described below.

The keyletter arguments are defined as follows. The effects of any keyletter argument apply independently to each named file on the command line.

-s: The presence of this argument silences the diagnostic message normally generated on standard error for any error that is detected while processing each named file on a given command line.
-rSID: The argument value SID (SCCS identification string) is an SCCS delta number. A check is made to determine if the SID is ambiguous (for example, -r1 is ambiguous because it physically does not exist but implies 1.1, 1.2, and so on, which may exist) or invalid (for example, \*-r1.0 or \*-r1.1.0 are invalid because neither can exist as a valid delta number). If the SID is valid and not ambiguous, a check is made to determine if it actually exists.
-mname: The argument value name is compared with the SCCS %M% keyword in file.
-ytype: The argument value type is compared with the SCCS %Y% keyword in file.

The 8-bit code returned by val is a disjunction of the possible errors; it can be interpreted as a bit string where (moving from left to right) set bits are interpreted as follows:

bit 0 = missing file argument
bit 1 = unknown or duplicate keyletter argument
bit 2 = corrupted SCCS file
bit 3 = cannot open file or file not SCCS
bit 4 = SID is invalid or ambiguous
bit 5 = SID does not exist
bit 6 = %Y%, -y mismatch
bit 7 = %M%, -m mismatch

val can process two or more files on a given command line and in turn can process multiple command lines (when reading the standard input). In these cases an aggregate code is returned: a logical OR of the codes generated for each command line and file processed.

Files

/usr/lib/locale/locale/LC_MESSAGES/uxepu: language-specific message file. (See LANG on environ(5)).

References

admin(1), delta(1), get(1), help(1), prs(1)

Diagnostics

Use help(1) for explanations.

Notices

val can process up to 50 files on a single command line.