144-149.html

来自「linux-unix130.linux.and.unix.ebooks130 l」· HTML 代码 · 共 163 行

HTML
163
字号
<HTML>

<HEAD>

<TITLE>Linux in Plain English:Linux Commands Organized by Group</TITLE>

<META NAME="ROBOTS" CONTENT="NOINDEX, NOFOLLOW">
<SCRIPT>
<!--
function displayWindow(url, width, height) {
        var Win = window.open(url,"displayWindow",'width=' + width +
',height=' + height + ',resizable=1,scrollbars=yes');
}
//-->
</SCRIPT>
</HEAD>

 -->




<!--ISBN=1558285423//-->

<!--TITLE=Linux in Plain English//-->

<!--AUTHOR=Patrick Volkerding//-->

<!--AUTHOR=Kevin Reichard//-->

<!--PUBLISHER=IDG Books Worldwide, Inc.//-->

<!--IMPRINT=M & T Books//-->

<!--CHAPTER=5//-->

<!--PAGES=144-149//-->

<!--UNASSIGNED1//-->

<!--UNASSIGNED2//-->



<CENTER>

<TABLE BORDER>

<TR>

<TD><A HREF="133-143.html">Previous</A></TD>

<TD><A HREF="../ewtoc.html">Table of Contents</A></TD>

<TD><A HREF="150-153.html">Next</A></TD>

</TR>

</TABLE>

</CENTER>

<P><BR></P>

<P><FONT SIZE="+1"><B>viewres......<TT>View Classes</TT></B></FONT></P>

<IMG SRC="images/05-33i.jpg"><P><B>viewres</B> <I>option(s)</I></P>

<P><FONT SIZE="+1"><B><I>PURPOSE</I></B></FONT></P>

<P>The <B>viewres</B> program displays the widget class hierarchy of the Athena Widget Set.</P>

<P><FONT SIZE="+1"><B><I>OPTIONS</I></B></FONT></P>

<TABLE WIDTH="100%">

<TR>

<TD WIDTH="20%" VALIGN="TOP"><B>-top <I>name</I></B>

<TD WIDTH="80%">Specifies the name of the highest widget in the hierarchy to display.

<TR>

<TD VALIGN="TOP"><B>-variable</B>

<TD>Displays the widget variable names in nodes rather than the widget class name.

<TR>

<TD><B>-vertical</B>

<TD>Displays top to bottom rather left to right.

</TABLE>

<P><FONT SIZE="+1"><B>w......<TT>System Information</TT></B></FONT></P>

<P><B>w</B> <I>option(s) usernames</I></P>

<P><FONT SIZE="+1"><B><I>PURPOSE</I></B></FONT></P>

<P>The <B>w</B> command returns information about the system: users currently logged in the system, usage statistics, and tasks that the users are performing. This is a combination of the <B>who</B>, <B>ps -a</B>, and <B>uptime</B> commands.</P>

<P>System information is returned in a header that includes the following: the current time, how long the system has been running, how many users are currently logged on, and the system-load averages for the past 1, 5, and 15 minutes.</P>

<P>User information includes the following: login name, tty name, the remote host, login time, idle, JCPU, PCPU, and the command line of their current process.</P>

<P><FONT SIZE="+1"><B><I>OPTIONS</I></B></FONT></P>

<TABLE WIDTH="100%">

<TR>

<TD WIDTH="20%"><B>-h</B>

<TD WIDTH="80%">Suppresses printing of the header.

<TR>

<TD VALIGN="TOP"><B>-u</B>

<TD>Ignores the current user while figuring out the current process and CPU times.

<TR>

<TD VALIGN="TOP"><B>-s</B>

<TD>Suppresses printing of the login time, JCPU, or PCPU times.

<TR>

<TD><B>-f</B>

<TD>Prints the <B>from</B> (<I>remote hostname</I>) field.

</TABLE>

<P><FONT SIZE="+1"><B><I>RELATED COMMANDS</I></B></FONT></P>

<DL>

<DD><B>free</B>

<DD><B>ps</B>

<DD><B>top</B>

<DD><B>uptime</B>

</DL>

<P><FONT SIZE="+1"><B>whatis......<TT>Command Information</TT></B></FONT></P>

<P><B>whatis</B> <I>option(s) keyword</I></P>

<P><FONT SIZE="+1"><B><I>PURPOSE</I></B></FONT></P>

<P>The <B>whatis</B> command invokes a miniature help system, but the topics are listed by keyword (which covers concepts) and not necessarily by commands. Because the Help information is returned as one line, there&#146;s not much depth concerning the keywords.</P>

<P>See the online-manual pages for a list of the available options.</P>

<P><FONT SIZE="+1"><B><I>EXAMPLE</I></B></FONT></P>

<!-- CODE SNIP //-->

<PRE>

$ whatis cat

</PRE>

<!-- END CODE SNIP //-->

<P><FONT SIZE="+1"><B><I>RELATED COMMANDS</I></B></FONT></P>

<DL>

<DD><B>apropos</B>

<DD><B>man</B>

</DL>

<P><FONT SIZE="+1"><B>who......<TT>User Information</TT></B></FONT></P>

<P><B>who</B> <I>option(s) filename</I></P>

<P><FONT SIZE="+1"><B><I>PURPOSE</I></B></FONT></P>

<P>The <B>who</B> command displays information about the system or a specific user. By itself, the <B>who</B> command lists the names of users currently logged in the system. As the command line <B>who am i</B>, the <B>who</B> command lists information about you.</P>

<P>See the online-manual pages for a list of the available options.</P>

<P><FONT SIZE="+1"><B><I>RELATED COMMANDS</I></B></FONT></P>

<DL>

<DD><B>w</B>

<DD><B>whoami</B>

</DL>

<P><FONT SIZE="+1"><B>whoami......<TT>Who Am I</TT></B></FONT></P>

<P><B>whoami</B></P>

<P><FONT SIZE="+1"><B><I>PURPOSE</I></B></FONT></P>

<P>This is a one-word shortcut to the <B>who am I</B> variation of the <B>who</B> command. It&#146;s also the same as <B>id -un</B>.</P>

<P><FONT SIZE="+1"><B><I>EXAMPLE</I></B></FONT></P>

<!-- CODE SNIP //-->

<PRE>

$ whoami

kevin

</PRE>

<!-- END CODE SNIP //-->

<P><FONT SIZE="+1"><B><I>RELATED COMMANDS</I></B></FONT></P>

<DL>

<DD><B>who</B>

</DL>

<P><FONT SIZE="+1"><B>wish......<TT>Tcl Window Shell</TT></B></FONT></P>

<P><B>wish</B> <I>filename arg</I></P>

<P><FONT SIZE="+1"><B><I>PURPOSE</I></B></FONT></P>

<P>The <B>wish</B> command is a shell window encompassing the Tcl command language, the Tk toolkit, and a main program that reads commands from standard input or from a file. It creates a main window and then processes Tcl commands. It will continue processing commands until all windows have been deleted or until end-of-file is reached on standard input.</P>

<P><FONT SIZE="+1"><B><I>OPTIONS</I></B></FONT></P>

<TABLE WIDTH="100%">

<TR>

<TD WIDTH="30%" VALIGN="TOP"><B>-colormmap new</B>

<TD WIDTH="70%">Creates a new private colormap instead of using the default colormap.

<TR>

<TD VALIGN="TOP"><B>-sync</B>

<TD>Executes X server commands synchronously, so errors are reported immediately.

<TR>

<TD><B>-visual <I>visual</I></B>

<TD>Specifies the visual for the window.

</TABLE>

<P><FONT SIZE="+1"><B><I>RELATED COMMANDS</I></B></FONT></P>

<DL>

<DD><B>Tk</B>

</DL>

<P><BR></P>

<CENTER>

<TABLE BORDER>

<TR>

<TD><A HREF="133-143.html">Previous</A></TD>

<TD><A HREF="../ewtoc.html">Table of Contents</A></TD>

<TD><A HREF="150-153.html">Next</A></TD>

</TR>

</TABLE>

</CENTER>





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

<!-- begin footer information -->





</body></html>

⌨️ 快捷键说明

复制代码Ctrl + C
搜索代码Ctrl + F
全屏模式F11
增大字号Ctrl + =
减小字号Ctrl + -
显示快捷键?