delta.1 (2010 09)

delta(1) delta(1)

LC_MESSAGES determines the language in which messages are displayed.

LC_CTYPE or LC_MESSAGES is not speciﬁed in the environment or is set to the empty string, the

value of LANG is used as a default for each unspeciﬁed or empty variable. If

LANG is not speciﬁed or is

set to the empty string, a default of "C" (see lang(5)) is used instead of

LANG. If any internationalization

variable contains an invalid setting,

delta behaves as if all internationalization variables are set to "C".

See environ (5).

International Code Set Support

Single- and multi-byte character code sets are supported.

DIAGNOSTICS

Use sccshelp (1) for explanations.

WARNINGS

SCCS ﬁles can be any length, but the number of lines in the text ﬁle itself cannot exceed 99 999 lines.

Lines beginning with an

ASCII SOH character (octal 001) cannot be placed in the

SCCS ﬁle unless the SOH

is escaped. This character has special meaning to

SCCS (see sccsﬁle (4)) and will cause an error.

get of many SCCS ﬁles, followed by a

delta of those ﬁles, should be avoided when the get generates

a large amount of data. Instead, multiple

get/delta sequences should be used.

If the standard input (

-) is speciﬁed on the delta command line, the

-m (if necessary) and -y options

must also be present. Omission of these options causes an error.

Comments can be of multiple lines. The maximum length of the comment (total length of all comment

lines) cannot exceed 1024 bytes. No line in a comment should have a length of more than 1000 bytes.

FILES

All of the auxiliary ﬁles listed below, except for the g-ﬁle, are created in the same directory as the s-ﬁle

(see get(1)). The g-ﬁle is created in the user’s working directory.

g-file Existed before the execution of

delta; removed after completion of delta

(unless -n was speciﬁed).

p-file Existed before the execution of delta; may exist after completion of delta.

q-file Created during the execution of delta; removed after completion of delta.

x-file Created during the execution of delta; renamed to SCCS ﬁle after completion of

delta.

z-file Created during the execution of delta; removed during the execution of

delta.

d-file Created during the execution of delta; removed after completion of delta.

/usr/bin/bdiff Program to compute differences between the ﬁle retrieved by

get and the g-ﬁle.