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graphicsmagick-doc-1.3.26-1.2.mga5.noarch.rpm

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<a NAME="gm identify"></a>gm identify
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<a NAME="ident-top"></a>NAME
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identify - describe an image or image sequence.
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<a NAME="ident-contents"></a>Contents
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<dl>
<dt>
<a href="#ident-syno">Synopsis</a>
</dt>
<dt>
<a href="#ident-desc">Description</a>
</dt>
<dt>
<a href="#ident-opti">Options</a>
</dt>
</dl>
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<a NAME="ident-syno"></a>Synopsis
</font></font></font></b></td></tr></table>
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<p>
<strong>gm identify</strong> <em>file</em> [ <em>file</em> ... ]
<br>&nbsp;<br>
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<a NAME="ident-desc"></a>Description
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<p>
<strong>Identify</strong> describes the format and characteristics of one or
more image files as internally supported by the software. It will also
report if an image is incomplete or corrupt.  The information
displayed includes the scene number, the file name, the width and
height of the image, whether the image is colormapped or not, the
number of colors in the image, the number of bytes in the image, the
format of the image (JPEG, PNM, etc.), and finally the number of
seconds in both user time and elapsed time it took to read and process
the image.  If -verbose or +ping are provided as an option, the pixel
read rate is also displayed. An example line output from
<strong>identify</strong> follows:
<pre>
    images/aquarium.miff 640x480 PseudoClass 256c
           308135b MIFF 0.000u 0:01
</pre>
<p>
If <tt>-verbose</tt> is set, expect additional output including any image
comment:
<br>&nbsp;<br>
<pre>
    Image: images/aquarium.miff
    class: PseudoClass
    colors: 256
    signature: eb5dca81dd93ae7e6ffae99a527eb5dca8...
    matte: False
    geometry: 640x480
       depth: 8
    bytes: 308135
    format: MIFF
    comments:
    Imported from MTV raster image: aquarium.mtv
</pre>
<p>
For some formats, additional format-specific information about the file
will be written if the <tt>-debug coder</tt> or <tt>-debug all</tt> option
is used.
</td></tr></table>
     <p>
<i><a href="#top">Back to Contents</a></i> 
&nbsp;</p>
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<a NAME="ident-opti"></a>Identify options
</font></font></font></b></td></tr></table>
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<p>
Options are processed in command line order. Any option you specify on
the command line remains in effect for the set of images immediately
following, until the set is terminated by the appearance of any option
or <strong>-noop</strong>.
<p>
For a more detailed description of each option, see
Options, above.
<a href="GraphicsMagick.html"><em>GraphicsMagick(1)</em></a>.
<br>&nbsp;<br>
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<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-authenticate">-authenticate</a> <i>&lt;string&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>decrypt image with this password</td></tr></table>
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<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    -debug <i>&lt;events&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>enable debug printout</td></tr></table>
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<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-define">-define</a> <i>&lt;key&gt;</i>{<i>=&lt;value&gt;</i>}<i>,...</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>add coder/decoder specific options</td></tr></table>
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<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-density">-density</a> <i>&lt;width&gt;x&lt;height&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>horizontal and vertical resolution in pixels of the image</td></tr></table>
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<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-depth">-depth</a> <i>&lt;value&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>depth of the image</td></tr></table>
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<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-format">-format</a> <i>&lt;string&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>output formatted image characteristics</td></tr></table>
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<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    -help
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>print usage instructions</td></tr></table>
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<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-interlace">-interlace</a> <i>&lt;type&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>the type of interlacing scheme</td></tr></table>
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<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-limit">-limit</a> <i>&lt;type&gt; &lt;value&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>Disk, File, Map, Memory, Pixels, Width, Height or Threads resource limit</td></tr></table>
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<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-log">-log</a> <i>&lt;string&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>Specify format for debug log</td></tr></table>
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<tr>
<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    -ping
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>efficiently determine image characteristics</td></tr></table>
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<tr>
<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-sampling-factor">-sampling-factor</a> <i>&lt;horizontal_factor&gt;x&lt;vertical_factor&gt;</i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>chroma subsampling factors</td></tr></table>
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<tr>
<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-size">-size</a> <i>&lt;width&gt;x&lt;height&gt;</i>{<i>+offset</i>}<i></i>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>width and height of the image</td></tr></table>
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<tr>
<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-verbose">-verbose</a>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>print detailed information about the image</td></tr></table>
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<td width="3%"><br></td> 
<td ALIGN=LEFT BGCOLOR="#FFFFFF">
<img SRC="images/right_triangle_option.png"
ALT=">" BORDER=0 height=14
width=15><b><font face="Helvetica, Arial"
><font color="#00B04F"><font size="+1">
    <a href="GraphicsMagick.html#details-version">-version</a>
</font></font></font></b></td></tr></table>
<table width="90%" border="0" cellspacing="0"              cellpadding="8">              <tr><td width="6%"><br></td><td>print GraphicsMagick version string</td></tr></table>
<p>
For a more detailed description of each option, see
Options, above.
<a href="GraphicsMagick.html"><em>GraphicsMagick(1)</em></a>.
<br>&nbsp;<br>
</td></tr></table>
     <p>
<i><a href="#top">Back to Contents</a></i> 
&nbsp;</p>