MPE/iX Shell and Utilities Reference Manual, Vol 2

sum(1) MPE/iX Shell and Utilities sum(1)
DIAGNOSTICS
Possible exit status values are:
0 Successful completion.
1 Failure due to any of the following:
— inability to open input file
— error reading the input file
2 Unknown command line option.
Messages
Message: input file "filename": system error
Cause: See syserror(3).
Action: See syserror(3).
Message: Unknown option "–option"
Cause: You specified an option that is not valid for sum.
Action: Check the DESCRIPTION section of this man page for a list of valid sum op-
tions
PORTABILITY
x/OPEN Portability Guide 4.0.
The default checksum algorithm is compatible with
UNIX System V.2 and later. The –r algo-
rithm is also available on UNIX System V.2 and is the default algorithm for Berkeley and Ver-
sion 7. The –c, –i, and –t options are not available under
UNIX.
MPE/iX NOTES
For information on how the current
MPE/iX implementation may affect the operation of this
utility, see Appendix A, MPE/iX Implementation Considerations.
SEE ALSO
cmp(1), cksum(1), diff(1), ls(1), wc(1)
Commands and Utilities 1-583