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- DDDDEEEELLLLTTTTAAAA((((1111)))) DDDDEEEELLLLTTTTAAAA((((1111))))
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- NNNNAAAAMMMMEEEE
- delta - make a delta (change) to an SCCS file
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- SSSSYYYYNNNNOOOOPPPPSSSSIIIISSSS
- ddddeeeellllttttaaaa [----rrrr SID] [----ssss] [----nnnn] [----gggg list] [----mmmm mmmmrrrrlllliiiisssstttt]]]] [[[[----yyyy[comment]] [----pppp] files
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- DDDDEEEESSSSCCCCRRRRIIIIPPPPTTTTIIIIOOOONNNN
- _d_e_l_t_a is used to permanently introduce into the named SCCS file changes
- that were made to the file retrieved by _g_e_t(1) (called the _g-_f_i_l_e, or
- generated file).
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- _d_e_l_t_a makes a delta to each named SCCS file. If a directory is named,
- _d_e_l_t_a behaves as though each file in the directory were specified as a
- named file, except that non-SCCS files (last component of the path name
- does not begin with ssss....) and unreadable files are silently ignored. If a
- name of ---- is given, the standard input is read (see _W_A_R_N_I_N_G_S); each line
- of the standard input is taken to be the name of an SCCS file to be
- processed.
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- _d_e_l_t_a may issue prompts on the standard output depending upon certain
- keyletters specified and flags [see _a_d_m_i_n(1)] that may be present in the
- SCCS file (see ----mmmm and ----yyyy keyletters below).
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- Keyletter arguments apply independently to each named file.
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- ----rrrr_S_I_D Uniquely identifies which delta is to be made to the
- SCCS file. The use of this keyletter is necessary
- only if two or more outstanding _g_e_ts for editing (ggggeeeetttt
- ----eeee) on the same SCCS file were done by the same
- person (login name). The SID value specified with
- the ----rrrr keyletter can be either the SID specified on
- the _g_e_t command line or the SID to be made as
- reported by the _g_e_t command [see _g_e_t(1)]. A
- diagnostic results if the specified SID is ambiguous,
- or, if necessary and omitted on the command line.
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- ----ssss Suppresses the issue, on the standard output, of the
- created delta's SID, as well as the number of lines
- inserted, deleted and unchanged in the SCCS file.
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- ----nnnn Specifies retention of the edited _g-_f_i_l_e (normally
- removed at completion of delta processing).
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- ----gggg_l_i_s_t a _l_i_s_t (see _g_e_t(1) for the definition of _l_i_s_t) of
- deltas which are to be _i_g_n_o_r_e_d when the file is
- accessed at the change level (SID) created by this
- delta.
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- ----mmmm[_m_r_l_i_s_t] If the SCCS file has the vvvv flag set [see _a_d_m_i_n(1)]
- then a Modification Request (MMMMRRRR) number _m_u_s_t be
- supplied as the reason for creating the new delta.
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- PPPPaaaaggggeeee 1111
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- DDDDEEEELLLLTTTTAAAA((((1111)))) DDDDEEEELLLLTTTTAAAA((((1111))))
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- If ----mmmm is not used and the standard input is a
- terminal, the prompt MMMMRRRRssss???? is issued on the standard
- output before the standard input is read; if the
- standard input is not a terminal, no prompt is
- issued. The MMMMRRRRssss???? prompt always precedes the
- ccccoooommmmmmmmeeeennnnttttssss???? prompt (see ----yyyy keyletter).
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- MMMMRRRRs in a list are separated by blanks and/or tab
- characters. An unescaped new-line character
- terminates the MMMMRRRR list.
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- Note that if the vvvv flag has a value [see _a_d_m_i_n(1)],
- it is taken to be the name of a program (or shell
- procedure) which will validate the correctness of the
- MMMMRRRR numbers. If a non-zero exit status is returned
- from the MMMMRRRR number validation program, _d_e_l_t_a
- terminates. (It is assumed that the MMMMRRRR numbers were
- not all valid.)
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- ----yyyy[_c_o_m_m_e_n_t] Arbitrary text used to describe the reason for making
- the delta. A null string is considered a valid
- _c_o_m_m_e_n_t.
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- If ----yyyy is not specified and the standard input is a
- terminal, the prompt ccccoooommmmmmmmeeeennnnttttssss???? is issued on the
- standard output before the standard input is read; if
- the standard input is not a terminal, no prompt is
- issued. An unescaped new-line character terminates
- the comment text.
-
- ----pppp Causes _d_e_l_t_a to print (on the standard output) the
- SCCS file differences before and after the delta is
- applied in a _d_i_f_f(1) format.
-
- FFFFIIIILLLLEEEESSSS
- g-file Existed before the execution of _d_e_l_t_a; removed after
- completion of _d_e_l_t_a.
- p-file Existed before the execution of _d_e_l_t_a; may exist after
- completion of _d_e_l_t_a.
- q-file Created during the execution of _d_e_l_t_a; removed after
- completion of _d_e_l_t_a.
- x-file Created during the execution of _d_e_l_t_a; renamed to SCCS
- file after completion of _d_e_l_t_a.
- z-file Created during the execution of _d_e_l_t_a; removed during
- the execution of _d_e_l_t_a.
- d-file Created during the execution of _d_e_l_t_a; removed after
- completion of _d_e_l_t_a.
- /usr/bin/bdiff Program to compute differences between the ``gotten''
- file and the _g-_f_i_l_e.
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- PPPPaaaaggggeeee 2222
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- DDDDEEEELLLLTTTTAAAA((((1111)))) DDDDEEEELLLLTTTTAAAA((((1111))))
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- WWWWAAAARRRRNNNNIIIINNNNGGGGSSSS
- Lines beginning with an SSSSOOOOHHHH ASCII character (binary 001) cannot be placed
- in the SCCS file unless the SSSSOOOOHHHH is escaped. This character has special
- meaning to SCCS [see _s_c_c_s_f_i_l_e(4) (5)] and will cause an error.
-
- A _g_e_t of many SCCS files, followed by a _d_e_l_t_a of those files, should be
- avoided when the _g_e_t generates a large amount of data. Instead, multiple
- _g_e_t/_d_e_l_t_a sequences should be used.
-
- If the standard input (----) is specified on the _d_e_l_t_a command line, the ----mmmm
- (if necessary) and ----yyyy keyletters _m_u_s_t also be present. Omission of these
- keyletters causes an error to occur.
-
- Comments are limited to text strings of at most 512 characters.
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- SSSSEEEEEEEE AAAALLLLSSSSOOOO
- admin(1), bdiff(1), cdc(1), get(1), help(1), prs(1), rmdel(1),
- sccsfile(4)
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- DDDDIIIIAAAAGGGGNNNNOOOOSSSSTTTTIIIICCCCSSSS
- Use _h_e_l_p(1) for explanations.
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- PPPPaaaaggggeeee 3333
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