MPE/iX Shell and Utilities Reference Manual, Vol 1

ed(1) MPE/iX Shell and Utilities ed(1)

Message: Unknown option "–option".

Cause: You speciﬁed an option that is not valid for ed.

Action: Check the DESCRIPTION section of this man page for a list of valid ed

options.

Message: Wrong number of addresses for command

Cause: You speciﬁed the wrong number of addresses for the command that you entered.

Action: Check the Commands subsection of this man page for a list of ed commands

and the number of addresses that you can specify with each.

PORTABILITY

POSIX.2. x/OPEN Portability Guide 4.0. All UNIX systems.

The addresses < and >, the –b and –x options, and the W and X commands are extensions to

the

POSIX standard.

The red command is also an extension to the POSIX standard.

LIMITS

ed allows a limit of 1024 bytes per line and 500,000 lines per ﬁle. It does not allow the

NUL

character. The maximum length of a global command is 256 characters, including newlines.

MPE/iX NOTES

Although the current

MPE/iX implementation of the ed command can read non-byte stream

ﬁles, it can only write byte stream ﬁles. As a result, if you edit a non-byte stream ﬁle with ed

and save it, that ﬁle is now a byte stream ﬁle. File characteristics like ﬁle code, record size,

and so forth are not preserved by this conversion.

For more information on how the current

MPE/iX implementation may affect the operation of

this utility, see Appendix A, MPE/iX Implementation Considerations.