MPE/iX Shell and Utilities Reference Manual, Vol 2

rcs(1) MPE/iX Shell and Utilities rcs(1)
Files
rcs creates a semaphore file in the same directory as the RCS file to prevent simultaneous
update. For changes, rcs always creates a new file. On successful completion, rcs deletes
the old one and renames the new one. This strategy makes links to RCS files useless.
DIAGNOSTICS
Possible exit status values are:
0 Successful completion.
1 An error occurred.
The
RCS file name and the revisions outdated are written to the diagnostic output.
Messages
Message: -Z overrides –z
Cause: You specified both the –Z option and the –z option. These two options are
mutually exclusive. The command behaves as though only the –z option was
specified.
Action: If you do not want the behaviour described under CAUSE, specify only one of
the two options.
Message: cannot change file format of existing RCS file filename
Cause: You attempted to check a text file in as a binary file, or vice versa, and revisions
already existed in the other format.
Action: Check the file in using the existing format.
Message: Can’t change states in an empty tree
Cause: You attempted to use the –s option to set the state of an
RCS file that does not
contain any revisions.
Action: Since states are associated with individual revisions, and not the RCS file as a
whole, make sure that there is at least one revision in a file, before changing its
state.
Message: Can’t create RCS file name1; saved in name2: system error
Cause: See syserror(3).
Action: See syserror(3).
Message: Can’t delete nonexistent symbol sym_name
Cause: You attempted to delete a symbolic name using:
rcs –nsym_name filename
but sym_name was not a symbolic name assigned to filename.
Action: Make sure that both sym_name and filename are correct and try again.
Commands and Utilities 1-459