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An SCCS file can be created by executing the command
$ admin -ifirst s.abcin which the value first with -i is the name of a file from which the text of the initial delta of the SCCS file s.abc is to be taken. Omission of a value with -i means admin is to read the standard input for the text of the initial delta.
The command
$ admin -i s.abc < firstis equivalent to the previous example.
If the text of the initial delta does not contain ID keywords, the message
No id keywords (cm7)is issued by admin as a warning. However, if the command also sets the i flag (not to be confused with the -i keyletter), the message is treated as an error and the SCCS file is not created. Only one SCCS file may be created at a time using admin -i.
admin -r is used to specify a release number for the first delta. Thus:
admin -ifirst -r3 s.abcmeans the first delta should be named 3.1 rather than the normal 1.1. Because -r has meaning only when creating the first delta, its use is permitted only with -i.