ch18_06.htm

unix基础教程

Format and print the contents of one or more SCCS files.
By default, <tt class="literal">prt</tt> prints the delta table (i.e., the version log).
The <em class="emphasis">sccsfile</em>(4) manpage describes the contents of
SCCS files in detail.</p>
<h4 class="refsect2">Options</h4><dl><dt><tt class="literal">-a</tt></dt><dd>Display entries for all deltas, including removed ones.</p>
</dd>
<dt><tt class="literal">-b</tt></dt><dd>Print the body of the SCCS file.</p>
</dd>
<dt><tt class="literal">-c</tt><tt><em class="replaceable">date</em></tt></dt><dd>Exclude entries that are prior to <em class="emphasis">date</em></tt>.
Each entry is printed as a single line, preceded by the name of the file.
This makes it possible to easily sort multiple version logs.</p>
</dd>
<dt><tt class="literal">-d</tt></dt><dd>Print delta table entries.
This is the default action.</p>
</dd>
<dt><tt class="literal">-e</tt></dt><dd>Print everything.  This option implies
<tt class="literal">-d</tt>,
<tt class="literal">-i</tt>,
<tt class="literal">-f</tt>,
<tt class="literal">-t</tt>,
and
<tt class="literal">-u</tt>.</p>
</dd>
<dt><tt class="literal">-f</tt></dt><dd>Print the flags for each SCCS file.</p>
</dd>
<dt><tt class="literal">-i</tt></dt><dd>Print the SIDs of included, excluded, and ignored deltas.</p>
</dd>
<dt><tt class="literal">-r</tt><tt><em class="replaceable">date</em></tt></dt><dd>Exclude deltas that are newer than <em class="emphasis">date</em></tt>.</p>
</dd>
<dt><tt class="literal">-s</tt></dt><dd>Print only the first line (the statistics) of each delta table.</p>
</dd>
<dt><tt class="literal">-t</tt></dt><dd>Print the SCCS file's descriptive text.</p>
</dd>
<dt><tt class="literal">-u</tt></dt><dd>Print the usernames and/or numerical group IDs of users that
are allowed to make changes.</p>
</dd>
<dt><tt class="literal">-y</tt>[<tt><em class="replaceable">sid</em></tt>]</dt><dd>Exclude deltas that are older than <em class="emphasis">sid</em></tt>.
If no delta in the table matches <em class="emphasis">sid</em>, print the entire table.
With no <em class="emphasis">sid</em>, print information


for the current delta.</p>
</dd>
</dl>

</td></tr><tr><td valign="top"><a name="rmdel">rmdel</a></td><td><p><tt class="literal">rmdel</tt> <tt class="literal">-r</tt> <em class="replaceable"><tt>sid files</tt></em></p>
<p>
<a name="IXT-18-123517" />Remove a delta from one or more SCCS <em class="emphasis">files</em>,
where <em class="emphasis">sid</em> is the SCCS ID.
The delta must be the most recent in its branch,
and it cannot be checked out for editing.</p>
</td></tr><tr><td valign="top"><a name="sact">sact</a></td><td><p><tt class="literal">sact</tt> <em class="replaceable"><tt>files</tt></em></p>
<p>
<a name="IXT-18-123518" />
<a name="IXT-18-123519" />
<a name="IXT-18-123520" />
<a name="IXT-18-123521" />For the specified SCCS <em class="emphasis">files</em>, report
which deltas are about to change (i.e., which files are currently
being edited via <tt class="literal">get -e</tt> but haven't yet been updated via <tt class="literal">delta</tt>).
<tt class="literal">sact</tt> lists output in five fields:  SCCS ID of the
current delta being edited, SCCS ID of the new delta to create, 
user who issued the <tt class="literal">get -e</tt>, and the date and time it was issued.</p>
</td></tr><tr><td valign="top"><a name="sccsdiff">sccsdiff</a></td><td><p><tt class="literal">sccsdiff</tt> <tt class="literal">-r</tt><em class="replaceable"><tt>sid1</em>  <tt class="literal">-r</tt><em class="replaceable">sid2 </em> [<em class="replaceable">options</em>] <em class="replaceable">files</tt></em></p>
<p>
<a name="IXT-18-123522" />Report differences between two versions of an SCCS <em class="emphasis">file</em>.
<em class="emphasis">sid1</em> and <em class="emphasis">sid2</em> identify the deltas to be compared.
This command invokes <tt class="literal">bdiff</tt>, which in
turn calls <tt class="literal">diff</tt>.
Solaris <tt class="literal">sccsdiff</tt> calls <tt class="literal">diff</tt>,
not <tt class="literal">bdiff</tt>.</p>
<h4 class="refsect2">Options</h4>
<dl><dt><tt class="literal">-p</tt></dt><dd>Pipe output through <tt class="literal">pr</tt>.</p>
</dd>
<dt><tt class="literal">-s</tt><tt><em class="replaceable">n</em></tt></dt><dd>Use file segment size <em class="emphasis">n</em></tt> (<em class="emphasis">n</em></tt> is passed to <tt class="literal">bdiff</tt>).</p>
</dd>
</dl>

</td></tr><tr><td valign="top"><a name="unget">unget</a></td><td><p><tt class="literal">unget</tt> [<em class="replaceable"><tt>options</em>] <em class="replaceable">files</tt></em></p>
<p>
<a name="IXT-18-123523" />Cancel a previous <tt class="literal">get -e</tt> for one or more SCCS
<em class="emphasis">files</em>.  If a file is being edited via <tt class="literal">get -e</tt>,
issuing <tt class="literal">delta</tt> processes the edits (creating
a new delta), whereas <tt class="literal">unget</tt> deletes the edited version
(preventing a new delta from being made).</p>
<h4 class="refsect2">Options</h4>
<dl><dt><tt class="literal">-n</tt></dt><dd>Do not remove file retrieved with <tt class="literal">get -e</tt>.</p>
</dd>
<dt><tt class="literal">-r</tt><tt><em class="replaceable">sid</em></tt></dt><dd>The SCCS ID of the delta to cancel;
needed only if <tt class="literal">get -e</tt> is issued more than once for the same SCCS file.</p>
</dd>
<dt><tt class="literal">-s</tt></dt><dd>Suppress display of the intended delta's <em class="emphasis">sid</em></tt>.</p>
</dd>
</dl>

</td></tr><tr><td valign="top"><a name="val">val</a></td><td><p><tt class="literal">val</tt> [<tt><em class="replaceable"><tt>options</em></tt>] <tt><em class="replaceable">files</tt></em></tt></p>
<p>
<a name="IXT-18-123524" />Validate that the SCCS <em class="emphasis">files</em></tt> meet the characteristics
specified in the options.  <tt class="literal">val</tt> produces messages on the standard
output for each file and returns an 8-bit code upon exit.
The codes are described in &#8220;Return Value Bits&#8221;; bits are counted left to right.</p>
<h4 class="refsect2">Options</h4><dl><dt><tt class="literal">-</tt></dt><dd>Read standard input and interpret each line as a <tt class="literal">val</tt> command-line
argument.  Exit with an <em class="emphasis">EOF</em>.  This option is used by itself.</p>
</dd>
<dt><tt class="literal">-m</tt><tt><em class="replaceable">name</em></tt></dt><dd>Compare <em class="emphasis">name</em></tt> with <tt class="literal">%M%</tt> keyword in <em class="emphasis">file</em></tt>.</p>
</dd>
<dt><tt class="literal">-r</tt><tt><em class="replaceable">sid</em></tt></dt><dd>Check whether the SCCS ID is ambiguous or
invalid.</p>
</dd>
<dt><tt class="literal">-s</tt></dt><dd>Silence any error message.</p>
</dd>
<dt><tt class="literal">-y</tt><tt><em class="replaceable">type</em></tt></dt><dd>Compare <em class="emphasis">type</em></tt> with <tt class="literal">%Y%</tt> keyword in <em class="emphasis">file</em></tt>.</p>
</dd>
</dl>

<h4 class="refsect2">Return Value Bits</h4><table border="1" cellpadding="3">

<tr><th>Bit</th><th>Meaning</th></tr>

<tr><td>0</td><td><p>Missing file argument.</p>
</td></tr>
<tr><td>1</td><td><p>Unknown or duplicate option.</p>
</td></tr>
<tr><td>2</td><td><p>Corrupted SCCS file.</p>
</td></tr>
<tr><td>3</td><td><p>Cannot open file, or file is not an SCCS file.</p>
</td></tr>
<tr><td>4</td><td><p>SID is invalid or ambiguous.</p>
</td></tr>
<tr><td>5</td><td><p>Nonexistent SID.</p>
</td></tr>
<tr><td>6</td><td><p>Mismatch between type and <tt class="literal">-y</tt> argument.</p>
</td></tr>
<tr><td>7</td><td><p>Mismatch between filename and <tt class="literal">-m</tt> argument.</p>
</td></tr>
</table><p>

</td></tr><tr><td valign="top"><a name="what">what</a></td><td><p><tt class="literal">what</tt> [<em class="replaceable"><tt>option</em>] <em class="replaceable">files</tt></em></p>
<p>
<a name="IXT-18-123525" />Search <em class="emphasis">files</em> for the pattern <tt class="literal">@(#)</tt> and print the text
that follows it.
(Typically, <em class="emphasis">files</em> are binary executables.)
Actually, the pattern searched for is the value of
<tt class="literal">%Z%</tt>, but the <tt class="literal">get</tt> command expands this keyword to
<tt class="literal">@(#)</tt>.
The main purpose of <tt class="literal">what</tt> is to print identification strings.</p>
<h4 class="refsect2">Option</h4>
<dl><dt><tt class="literal">-s</tt></dt><dd>Quit after finding the first occurrence of a pattern.</p>
</dd>
</dl>

</td></tr></table><p>

<a name="IXT-18-123526" />
<a name="IXT-18-123527" />

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