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Code Issues Releases Wiki Activity

Documentation/NuttShell.html: Another trivial update.

This commit is contained in:
Gregory Nutt 2018-10-02 13:47:47 -06:00
parent c1fdd2d6b1
commit 300b26d1d8
1 changed files with 16 additions and 9 deletions
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25
Documentation/NuttShell.html
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@ -4136,19 +4136,26 @@ set FOOBAR ABC_${FOO}_${BAR}
</p> </p>
<table border="1"> <table border="1">
<tr> <tr>
<td valign="top"><b>CMD</b></td> <td valign="top" width="15%"><b>CMD</b></td>
<td valign="top"><b>w/o <code>CONFIG_NSH_VARS</code></b></td> <td valign="top" width="30%"><b>w/o <code>CONFIG_NSH_VARS</code></b></td>
<td valign="top"><b>w/ <code>CONFIG_NSH_VARS</code></b></td> <td valign="top" width="45%"><b>w/ <code>CONFIG_NSH_VARS</code></b></td>
</tr> </tr>
<tr> <tr>
<td valign="top"><code>set &lt;a&gt; &lt;b&gt;</code></td> <td valign="top"><code>set &lt;a&gt; &lt;b&gt;</code></td>
<td valign="top">Set environment variable &lt;a&gt; to &lt;b&gt;</td> <td valign="top">Set environment variable &lt;a&gt; to &lt;b&gt;</td>
<td valign="top">Set NSH variable &lt;a&gt; to &lt;b&gt;</td> <td valign="top">Set NSH variable &lt;a&gt; to &lt;b&gt;
(Unless the NSH variable has been <i>promoted</i> via <code>export</code>, in which case the environment variable of the same name is set to &lt;b&gt;).
</td>
</tr> </tr>
<tr> <tr>
<td><code>unset &lt;a&gt;</code></td> <td valign="top"><code>set</code></td>
<td>Unsets environment variable &lt;a&gt;</td> <td valign="top">Causes an error.</td>
<td>Unsets both environment variable and NSH variable &lt;a&gt;</td> <td valign="top">Lists all NSH variables.</td>
</tr>
<tr>
<td valign="top"><code>unset &lt;a&gt;</code></td>
<td valign="top">Unsets environment variable &lt;a&gt;</td>
<td valign="top">Unsets both environment variable <i>and</i> NSH variable with and name &lt;a&gt;</td>
</tr> </tr>
<tr> <tr>
<td valign="top"><code>export &lt;a&gt; &lt;b&gt;</code></td> <td valign="top"><code>export &lt;a&gt; &lt;b&gt;</code></td>
@ -4158,12 +4165,12 @@ set FOOBAR ABC_${FOO}_${BAR}
<tr> <tr>
<td valign="top"><code>export &lt;a&gt;</code></td> <td valign="top"><code>export &lt;a&gt;</code></td>
<td valign="top">Causes an error.</td> <td valign="top">Causes an error.</td>
<td valign="top">Sets environment variable &lt;a&gt; to the value of NSH variable &lt;a&gt; (or "" if undefined). Unsets NSH local variable &lt;a&gt;.</td> <td valign="top">Sets environment variable &lt;a&gt; to the value of NSH variable &lt;a&gt; (or &quot;&quot; if the NSH variable has not been set). Unsets NSH local variable &lt;a&gt;.</td>
</tr> </tr>
<tr> <tr>
<td valign="top"><code>env</code></td> <td valign="top"><code>env</code></td>
<td valign="top">Lists all environment variables</td> <td valign="top">Lists all environment variables</td>
<td valign="top">Lists all environment variables (only)</td> <td valign="top">Lists all environment variables (<i>only</i>)</td>
</tr> </tr>
</table> </table>
</tr> </tr>