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<!--AUTHOR=Patrick Volkerding//-->
<!--AUTHOR=Kevin Reichard//-->
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<H2><A NAME="Heading1"></A><FONT COLOR="#000077">Chapter 2<BR>Linux in Plain English
</FONT></H2>
<P>Human beings don’t think in computerese, which is why we need a reference work like this one. Commands tend to be rather obscure, and their purpose isn’t always apparent. To further your Linux efforts, we’ve compiled this listing of commands and organized them by keyword and function. You can look up an italicized keyword in the left column—say, <I>print</I>—and see which Linux commands help perform that task. Then go to Chapter 5 for a complete explanation of the command.</P>
<TABLE WIDTH="100%"><TR>
<TH WIDTH="50%" ALIGN="LEFT">If you want to...
<TH WIDTH="50%" ALIGN="LEFT">Use the Linux command...
<TR>
<TD>control server <I>access</I>
<TD><B>xhost</B>
<TR>
<TD><I>append</I> files
<TD><B>cat</B>
<TR>
<TD>know your machine <I>architecture</I>
<TD><B>arch</B>
<TR>
<TD>create <I>archive</I>
<TD><B>cpio, tar</B>
<TR>
<TD>work with <I>archives</I>
<TD><B>ar</B>
<TR>
<TD>convert <I>ASCII</I> to bitmap
<TD><B>atobm</B>
<TR>
<TD>convert bitmap to <I>ASCII</I>
<TD><B>bmtoa</B>
<TR>
<TD>print <I>at</I> specific time
<TD><B>atq</B>
<TR>
<TD>run command <I>at</I> specific time
<TD><B>at</B>
<TR>
<TD>list <I>atoms</I>
<TD><B>xlsatoms</B>
<TR>
<TD>manage <I>authorization</I> information
<TD><B>xauth</B>
<TR>
<TD>set <I>background</I> attributes
<TD><B>xsetroot</B>
<TR>
<TD>set <I>background</I> image
<TD><B>xpmroot</B>
<TR>
<TD>print a <I>banner</I>
<TD><B>banner</B>
<TR>
<TD>display file <I>basename</I>
<TD><B>basename</B>
<TR>
<TD>run <I>batch</I> commands
<TD><B>batch</B>
<TR>
<TD>display <I>beginning</I> of file
<TD><B>head</B>
<TR>
<TD>display <I>end</I> of file
<TD><B>tail</B>
<TR>
<TD>convert ASCII to <I>bitmap</I>
<TD><B>atobm</B>
<TR>
<TD>convert <I>bitmap</I> to ASCII
<TD><B>bmtoa</B>
<TR>
<TD>view and edit <I>bitmaps</I>
<TD><B>bitmap</B>
<TR>
<TD>compile <I>C</I> programs
<TD><B>gcc</B>
<TR>
<TD>compile <I>C++</I> programs
<TD><B>gcc, g++</B>
<TR>
<TD>perform <I>calculations</I>
<TD><B>bc, pname, xcalc</B>
<TR>
<TD>view a <I>calendar</I>
<TD><B>cal</B>
<TR>
<TD><I>clear</I> your screen
<TD><B>clear</B>
<TR>
<TD>list running <I>clients</I>
<TD><B>xlsclients</B>
<TR>
<TD>display contents of <I>clipboard</I>
<TD><B>xclipboard</B>
<TR>
<TD>display a <I>clock</I>
<TD><B>oclock, xclock</B>
<TR>
<TD>show <I>color database</I>
<TD><B>showrgb</B>
<TR>
<TD>display <I>colormap</I>
<TD><B>xcmap</B>
<TR>
<TD>set <I>colormap</I> properties
<TD><B>xstdcmap</B>
<TR>
<TD>cut <I>column</I>
<TD><B>cut</B>
<TR>
<TD>create <I>columns</I>
<TD><B>column</B>
<TR>
<TD><I>combine</I> files
<TD><B>cat, join</B>
<TR>
<TD>run <I>command</I> at specific time
<TD><B>at</B>
<TR>
<TD>build <I>command lines</I>
<TD><B>xargs</B>
<TR>
<TD VALIGN="TOP"><I>compare</I> files
<TD><B>cmp, diff, diff3, sdiff, zcmp, zdiff</B></B>
<TR>
<TD>
<TD>
<TR>
<TD><I>compare</I> compressed files
<TD><B>zcmp, zdiff</B>
<TR>
<TD><I>compare</I> sorted files
<TD><B>comm</B>
<TR>
<TD><I>compare</I> text files
<TD><B>diff, diff3, sdiff</B>
<TR>
<TD><I>compare</I> three text files
<TD><B>diff3</B>
<TR>
<TD><I>compile</I> C programs
<TD><B>gcc</B>
<TR>
<TD><I>compile</I> C++ programs
<TD><B>gcc, g++</B>
<TR>
<TD><I>compile</I> Fortran programs
<TD><B>g77</B>
<TR>
<TD><I>compress</I> executable file
<TD><B>gzexe</B>
<TR>
<TD><I>compress</I> file
<TD><B>gzip, znew</B>
<TR>
<TD><I>connect</I> to another computer
<TD><B>minicom, seyon</B>
<TR>
<TD><I>copy</I> files
<TD><B>cp, cat</B>
<TR>
<TD><I>count</I> words
<TD><B>wc</B>
<TR>
<TD>return the <I>current</I> date
<TD><B>date</B>
<TR>
<TD>change the <I>date</I> on your system
<TD><B>date</B>
<TR>
<TD><I>decode</I> file
<TD><B>uudecode</B>
<TR>
<TD><I>delete</I> files
<TD><B>rm</B>
<TR>
<TD><I>delete</I> directories
<TD><B>rmdir</B>
<TR>
<TD>change <I>directory</I>
<TD><B>cd</B>
<TR>
<TD>make <I>directory</I>
<TD><B>mkdir</B>
<TR>
<TD>print current <I>directory</I>
<TD><B>pwd</B>
<TR>
<TD>list <I>disk</I> free space
<TD><B>df</B>
<TR>
<TD>lock <I>display</I>
<TD><B>xlock</B>
<TR>
<TD>view <I>display</I> information
<TD><B>xdpyinfo</B>
<TR>
<TD>query <I>DNS</I> server
<TD><B>dnsquery</B>
<TR>
<TD>show <I>domain name</I>
<TD><B>dnshostname</B>
<TR>
<TD><I>echo</I> input
<TD><B>echo</B>
<TR>
<TD><I>edit</I> text file
<TD><B>elvis, emacs, vi, vim, xedit</B>
<TR>
<TD>create <I>electronic mail</I>
<TD><B>elm, mail, metasend, pine</B>
<TR>
<TD>encode <I>electronic mail</I>
<TD><B>mimencode, mmencode</B>
<TR>
<TD>format <I>electronic mail</I>
<TD><B>formail</B>
<TR>
<TD>notify of incoming <I>electronic mail</I>
<TD><B>biff, xbiff, wnewmail</B>
<TR>
<TD>create multimedia <I>electronic mail</I>
<TD><B>metasend</B>
<TR>
<TD>print <I>electronic mail</I>
<TD><B>printmail</B>
<TR>
<TD>read <I>electronic mail</I>
<TD><B>elm, mail, pine, readmsg</B>
<TR>
<TD>reply via <I>electronic mail</I>
<TD><B>Rnmail</B>
<TR>
<TD>retrieve <I>electronic mail</I> via POP
<TD><B>popclient</B>
<TR>
<TD>send batches of <I>electronic mail</I>
<TD><B>fastmail</B>
<TR>
<TD>split MIME <I>electronic mail</I>
<TD><B>splitmail</B>
<TR>
<TD>launch <I>electronic-mail</I> server
<TD><B>imapd, sendmail</B>
<TR>
<TD><I>encode</I> file
<TD><B>uuencode</B>
<TR>
<TD>return <I>environment</I> variables
<TD><B>printenv</B>
<TR>
<TD>set <I>environment</I> variables
<TD><B>env</B>
<TR>
<TD>view <I>event</I> information
<TD><B>xev</B>
<TR>
<TD>make <I>FIFO</I>
<TD><B>mkfifo</B>
<TR>
<TD>check <I>files</I>
<TD><B>cksum</B>
<TR>
<TD><I>find files</I>
<TD><B>find</B>
<TR>
<TD>change <I>finger</I> information
<TD><B>chfn</B>
<TR>
<TD>return <I>finger</I> information
<TD><B>finger</B>
<TR>
<TD>launch <I>font</I> server
<TD><B>xfs</B>
<TR>
<TD>view <I>font server</I> information
<TD><B>fsinfo</B>
<TR>
<TD VALIGN="TOP">list <I>fonts</I>
<TD><B>fslsfonts, showfont, xfd,</B> <B>Xfontsel, xlsfonts</B>
<TR>
<TD><I>format</I> file
<TD><B>fmt, groff</B>
<TR>
<TD><I>format</I> floppy disk
<TD><B>fdformat</B>
<TR>
<TD>compile <I>Fortran</I> programs
<TD><B>g77</B>
<TR>
<TD>generate <I>fractals</I>
<TD><B>xfractint</B>
<TR>
<TD>launch <I>FTP</I> server
<TD><B>ftpd</B>
<TR>
<TD>edit <I>graphics</I>
<TD><B>xv</B>
<TR>
<TD>change <I>group</I>
<TD><B>chgrp, newgrp</B>
<TR>
<TD VALIGN="TOP">view online <I>help</I>
<TD><B>apropos, info, man, whatis, Xman</B>
<TR>
<TD>return <I>host</I> information
<TD><B>host</B>
<TR>
<TD>set <I>hostname</I>
<TD><B>hostname</B>
<TR>
<TD>view <I>keyboard</I> information
<TD><B>dumpkeys, kdb_mode</B>
<TR>
<TD>modify <I>keymaps</I>
<TD><B>xmodmap</B>
<TR>
<TD>save <I>keystrokes to</I> file
<TD><B>script</B>
<TR>
<TD>view <I>keyword</I> information
<TD><B>whatis</B>
<TR>
<TD>edit <I>images</I>
<TD><B>xv</B>
<TR>
<TD>launch <I>IMAP</I> mail server
<TD><B>imapd</B>
<TR>
<TD>launch <I>Internet</I> server
<TD><B>inetd</B>
<TR>
<TD><I>join</I> sorted files
<TD><B>join</B>
<TR>
<TD><I>link</I> files
<TD><B>ln</B>
<TR>
<TD><I>list</I> files
<TD><B>dir, ls</B>
<TR>
<TD><I>lock</I> display
<TD><B>xlock</B>
<TR>
<TD><I>login</I> remotely
<TD><B>rlogin</B>
<TR>
<TD><I>login</I> system
<TD><B>login</B>
<TR>
<TD>view <I>login name</I>
<TD><B>logname</B>
<TR>
<TD>create electronic <I>mail</I>
<TD><B>elm, mail, metasend, pine</B>
<TR>
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