val - validate SCCS file
val [-s] [-r SID] [-m name] [-y type] files
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 the standard output for each command
line and file processed, and also returns a single 8-bit code upon 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
-s The presence of this argument silences the diagnostic message
normally generated on the standard output for any error that
is detected while processing each named file on a given
-rSID The argument value SID (SCCS IDentification String) is an
SCCS delta number. A check is made to determine if the SID
is ambiguous (e. g., r1 is ambiguous because it physically
does not exist but implies 1.1, 1.2, etc., which may exist)
or invalid (e. g., r1.0 or r1.1.0 are invalid because neither
case can exist as a valid delta number). If the SID is valid
and not ambiguous, a check is made to determine if it
-mname The argument value name is compared with the s-1SCCS %M%
keyword in file.
-ytype The argument value type is compared with the SCCS %Y% keyword
The 8-bit code returned by val is a disjunction of the possible errors,
i. e., 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;
Note that 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.
admin(1), delta(1), get(1), help(1), prs(1)
Use help(1) for explanations.
val can process up to 50 files on a single command line. Any number
above 50 will produce a core dump.
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