Name
val - validate SCCS file
Syntax
val -
val [-s] [-rSID] [-mname] [-ytype] files
Description
The val command 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.
The val command 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.
The val command 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 line.
-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
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, etc., which
may exist) or invalid (for example, -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 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, that is, 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;
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.
See Also
admin(CP), delta(CP), get(CP), prs(CP), help(CP)
Diagnostics
Use help(CP) for explanations.
Notes
The val command can process up to 50 files on a single
command line. Any number above 50 will produce a core dump.
Standards Conformance
val is conformant with:
AT&T SVID Issue 2, Select Code 307-127;
and The X/Open Portability Guide II of January 1987.
(printed 6/18/89)