Open System Services Shell and Utilities Reference Manual (G06.28+, H06.05+)

sum(1) OSS Shell and Utilities Reference Manual
>0 An error occurred.
RELATED INFORMATION
Commands: cksum(1), wc(1).
STANDARDS CONFORMANCE
This command conforms to the XPG4 Version 2 specification, with the following exception:
• The -o flag is an HP extension to the specification.
8−68 Hewlett-Packard Company 527188-007