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| <h3 class="section">22.4 Screen Size</h3> |
| |
| <p><a name="index-size-of-screen-1679"></a><a name="index-screen-size-1680"></a><a name="index-pagination-1681"></a><a name="index-page-size-1682"></a><a name="index-pauses-in-output-1683"></a> |
| Certain commands to <span class="sc">gdb</span> may produce large amounts of |
| information output to the screen. To help you read all of it, |
| <span class="sc">gdb</span> pauses and asks you for input at the end of each page of |
| output. Type <RET> when you want to see one more page of output, |
| <kbd>q</kbd> to discard the remaining output, or <kbd>c</kbd> to continue |
| without paging for the rest of the current command. Also, the screen |
| width setting determines when to wrap lines of output. Depending on |
| what is being printed, <span class="sc">gdb</span> tries to break the line at a |
| readable place, rather than simply letting it overflow onto the |
| following line. |
| |
| <p>Normally <span class="sc">gdb</span> knows the size of the screen from the terminal |
| driver software. For example, on Unix <span class="sc">gdb</span> uses the termcap data base |
| together with the value of the <code>TERM</code> environment variable and the |
| <code>stty rows</code> and <code>stty cols</code> settings. If this is not correct, |
| you can override it with the <code>set height</code> and <code>set |
| width</code> commands: |
| |
| |
| <a name="index-set-height-1684"></a> |
| <a name="index-set-width-1685"></a> |
| <a name="index-show-width-1686"></a> |
| <a name="index-show-height-1687"></a> |
| <dl><dt><code>set height </code><var>lpp</var><dt><code>set height unlimited</code><dt><code>show height</code><dt><code>set width </code><var>cpl</var><dt><code>set width unlimited</code><dt><code>show width</code><dd>These <code>set</code> commands specify a screen height of <var>lpp</var> lines and |
| a screen width of <var>cpl</var> characters. The associated <code>show</code> |
| commands display the current settings. |
| |
| <p>If you specify a height of either <code>unlimited</code> or zero lines, |
| <span class="sc">gdb</span> does not pause during output no matter how long the |
| output is. This is useful if output is to a file or to an editor |
| buffer. |
| |
| <p>Likewise, you can specify ‘<samp><span class="samp">set width unlimited</span></samp>’ or ‘<samp><span class="samp">set |
| width 0</span></samp>’ to prevent <span class="sc">gdb</span> from wrapping its output. |
| |
| <br><dt><code>set pagination on</code><dt><code>set pagination off</code><dd><a name="index-set-pagination-1688"></a>Turn the output pagination on or off; the default is on. Turning |
| pagination off is the alternative to <code>set height unlimited</code>. Note that |
| running <span class="sc">gdb</span> with the <samp><span class="option">--batch</span></samp> option (see <a href="Mode-Options.html#Mode-Options">-batch</a>) also automatically disables pagination. |
| |
| <br><dt><code>show pagination</code><dd><a name="index-show-pagination-1689"></a>Show the current pagination mode. |
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