MPE/iX Shell and Utilities Reference Manual, Vol 1

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

Message: out of space for pattern "string"

Cause: grep did not have enough system resources available to store the code needed

to work with the given pattern (regular expression). The usual cause is that the

pattern is very complex.

Action: Make the pattern simpler, or free up more system resources.

Message: read error on file "ﬁlename": system error

Cause: See syserror(3).

Action: See syserror(3).

Message: regular expression error: regular expression error

Cause: See regerror(3).

Action: See regerror(3).

Message: string 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 grep.

Action: Check the DESCRIPTION section for a list of valid grep options.

PORTABILITY

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

systems.

Only the actual grep command is a part of the POSIX standard. The egrep and fgrep com-

mands are extensions. The –b option is also an extension to the

POSIX standard.

LIMITS

The longest input record (line) is restricted by the system variable LINE_MAX. It is always at

least 2048 bytes. Longer lines are treated as two or more records.

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.