https://wiki.ice-online.com/index.php?action=history&feed=atom&title=OSOS - Revision history2026-04-12T12:23:24ZRevision history for this page on the wikiMediaWiki 1.34.1https://wiki.ice-online.com/index.php?title=OS&diff=699&oldid=prevConvertBot: sends an operating system command to the appropriate OS2020-04-27T22:04:30Z<p>sends an operating system command to the appropriate OS</p>
<p><b>New page</b></p><div>sends an operating system command to the appropriate OS<br />
<pre><br />
<> - The command (in quotes) to be sent<br />
<br />
This command send an operating system command to the operating system that is<br />
running the OS command. These commands are run internal to the Java Virtual<br />
Machine (JVM).<br />
<br />
Note: Because this command line is run through the parser, the command may need<br />
to be quoted depending on the characters in the command.<br />
<br />
Other ways to execute OS commands:<br />
=================================<br />
$ - Forces command to be executed in the shell that is running NeXtMidas<br />
(instead of a subshell). This is run from Java and does not affect your<br />
UNIX or other shell.<br />
<br />
$$ - Forces command to operating system. This will affect your UNIX or other<br />
shell. This is equivalent to running the command directly.<br />
<br />
<br />
Examples:<br />
1. Perform an OS command without affecting the OS shell<br />
<br />
nM> plot/bg world<br />
nM> os ls<br />
nM> $ls<br />
<br />
These are equivalent OS commands run from within Java. The plot<br />
will stay up when these return.<br />
<br />
2. Perform an OS command affecting the OS shell<br />
<br />
nM> plot/bg world<br />
nM> $$cd ~<br />
<br />
The plot goes away and the directory is changed from the current directory<br />
to the user's home directory.<br />
<br />
3. On UNIX platforms:<br />
<br />
nM> os touch myfile<br />
<br />
creates a file in the current directory<br />
<br />
4. Capture output of OS command to results.<br />
nM> os/stdout=myres echo hello there<br />
<br />
Switches:<br />
/STDERR=<res> Capture standard error of OS command into results in a String.<br />
This will prevent output to terminal. This switch MUST be right<br />
after the command. (Since 3.0.0)<br />
/STDOUT=<res> Capture standard output of OS command into results in a String.<br />
This will prevent output to terminal. This switch MUST be right<br />
after the command. (Since 3.0.0)<br />
/EXITSTATUS=<res> Capture exit status/value of the OS command into results<br />
label. By convention, 0 indicates success. This switch MUST be<br />
right after the command. (Since 3.5.0)<br />
<br />
</pre><br />
<br />
[[Category:NXM_Explain]]</div>ConvertBot