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📁 linux-unix130.linux.and.unix.ebooks130 linux and unix ebookslinuxLearning Linux - Collection of 12 E
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<TITLE>Linux in Plain English:Linux Commands Organized by Group</TITLE>

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

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

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

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

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

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

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

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<P><BR></P>

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

<TABLE WIDTH="100%">

<TR>

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

<TD WIDTH="80%">The same as the <B>batch</B> command.

<TR>

<TD><B>-d</B>

<TD>The same as the <B>atrm</B> command.

<TR>

<TD VALIGN="TOP"><B>-f <I>file</I></B>

<TD>Takes input (that is, the names of commands) from <I>file</I> instead of standard input.

<TR>

<TD><B>-l</B>

<TD>The same as the <B>atq</B> command

<TR>

<TD><B>-m</B>

<TD>Sends electronic mail when the job is completed.

<TR>

<TD VALIGN="TOP"><B>-q <I>queue</I></B>

<TD>Sets the niceness level for the <B>at</B> command, using a queue designation. This designation is a single letter, ranging from <B>a</B> to <B>z</B>. The higher the letter, the &#147;nicer&#148; the command will run (see <B>nice</B> for a description of niceness and the Linux operating system). The default for <B>at</B> is <B>c</B>, so if you want a command to be run when the system has less stress, you&#146;d choose a letter like <B>m</B> as the queue designation. Conversely, if you want a command to be run no matter what, you&#146;d use a queue designation of <B>a</B>.

<TR>

<TD><B>-V</B>

<TD>Prints the version number.

</TABLE>

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

<DL>

<DD><B>atq</B>

<DD><B>artm</B>

<DD><B>batch</B>

</DL>

<P><FONT SIZE="+1"><B>at......<TT>Print At</TT></B></FONT></P>

<P><B>atq</B> <I>option user job-ID</I></P>

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

<P>The <B>atq</B> command lists all jobs that are already scheduled with the <B>at</B> command (for the superuser) or the jobs of a specific user, as well as a specific job ID. This is the same as <B>at -l</B>.</P>

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

<TABLE WIDTH="100%">

<TR>

<TD WIDTH="20%" VALIGN="TOP"><B>-q <I>queue</I></B>

<TD WIDTH="80%">Sets the niceness level for the <B>at</B> command, using a queue designation. This designation is a single letter, ranging from <B>a</B> to <B>z</B>. The higher the letter, the &#147;nicer&#148; the command will run (see <B>nice</B> for a description of niceness and the Linux operating system). The default for <B>at</B> is <B>c</B>, so if you want a command to be run when the system has less stress, you&#146;d choose a letter like <B>m</B> as the queue designation. Conversely, if you want a command to be run no matter what, you&#146;d use a queue designation of <B>a</B>.

<TR>

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

<TD>Shows jobs that have been completed but not yet deleted from the queue.

</TABLE>

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

<DL>

<DD><B>at</B>

<DD><B>atrm</B>

<DD><B>batch</B>

</DL>

<P><FONT SIZE="+1"><B>atrm......<TT>Remove Job</TT></B></FONT></P>

<P><B>atrm</B> <I>option user job-ID</I></P>

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

<P>The <B>atrm</B> command removed jobs scheduled with the <B>at</B> command. Superusers can delete all jobs, while other users can remove only their own jobs. This is the same as <B>at -d</B>.</P>

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

<DL>

<DD><B>at</B>

<DD><B>atq</B>

<DD><B>batch</B>

</DL>

<P><FONT SIZE="+1"><B>batch......<TT>Run Batch Commands</TT></B></FONT></P>

<P><B>batch</B> <I>option(s) time</I></P>

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

<P>The <B>batch</B> command runs a series of commands one at a time, which are entered from a command line as standard input. The difference between <B>batch</B> and <B>at</B> is that <B>batch</B> automatically runs the commands when the system load is light; in these cases, you don&#146;t specify when the command is to be run. However, you can specify an execution time with the <B>batch</B> command.</P>

<P>When you have finished entering the commands from the command line, use <B>Ctrl-D</B> to end input.</P>

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

<TABLE WIDTH="100%">

<TR>

<TD WIDTH="20%" VALIGN="TOP"><B>-f <I>file</I></B>

<TD WIDTH="80%">Runs commands from <I>file</I>, not from standard input on the command line.

<TR>

<TD><B>-m</B>

<TD>Sends electronic mail when the job is completed.

</TABLE>

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

<!-- CODE SNIP //-->

<PRE>

$ batch

pr -a kevin.memo

lp kevin.memo

Ctrl-D

</PRE>

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

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

<DL>

<DD><B>at</B>

</DL>

<P><FONT SIZE="+1"><B>cpio......<TT>Create Archive</TT></B></FONT></P>

<P><B>cpio</B> <I>flags option(s)</I></P>

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

<P>The <B>cpio</B> command is used to create archives, either on a local filesystem or on a tape backup. The default is to copy to a tape archive.</P>

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

<P>The <B>cpio</B> command must be combined with one or more of the following flags:</P>

<TABLE WIDTH="100%"><TR>

<TD WIDTH="40%" VALIGN="TOP"><B>-i <I>option patterns</I></B>

<TD WIDTH="60%">Copies all files that match <I>patterns</I>, which can incorporate wildcards. (If you use wildcards, you must quote them so that the shell doesn&#146;t interpret them.) If you don&#146;t specify a <I>pattern</I>, then all files are copied.

<TR>

<TD><B>-o <I>options</I></B>

<TD>Copies all files specified by name.

<TR>

<TD VALIGN="TOP"><B>-p <I>options directory</I></B>

<TD>Copies files to a local directory, instead of to a tape archive.

</TABLE>

<P>The options available to each flag is part of the explanations of each option.

</P><P><BR></P>

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