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<chapter id="konsole-intro">
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<chapterinfo>
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<authorgroup>
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<author>
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<firstname>Gardner</firstname>
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<surname>Bell</surname>
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</author>
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</authorgroup>
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</chapterinfo>
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<title>&konsole; Introduction</title>
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<para>Extremely brief intro to managing in a shell</para>
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<para>Emergency procedures: killing wild apps, etc</para>
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<para>SSH, sessions, envars, other fun things</para>
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<para>Some tips and tricks</para>
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<!-- Some Content borrowed from the konsole handbook -->
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<para>&konsole; is a terminal emulator for the X Window System. It is
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essentially based on the <ulink url="http://vt100.net">DEC's VT100</ulink>
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and many of its succesors. &konsole; – also referred to as a
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shell – is an
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essential tool on &Linux; and &UNIX; based machines for fast and productive
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work.</para>
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<para>Emergency Procedures:</para>
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<para>On &Linux; and &UNIX;-based systems every process runs independently in its own memory
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space so it can't accidentally overwrite any other processes memory, unless
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of course it has <systemitem class="username">root</systemitem> privileges.
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If a process in &tde; crashes due to a bug one should not need to worry
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about it accessing any other active process.</para>
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<para>To keep track of all system processes use the <command>top</command>
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command or <command>ps</command> in &konsole;. Using these utilities will
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make it much easier to find and kill off rogue programs.</para>
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<para>An example of using signals in &konsole;, &konqueror; has crashed
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leaving behind a running process of
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<application>nspluginviewer</application> which is taking up 12% of your
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memory and 10% of your cpu cycles. In <command>top</command> use the <keycap>k</keycap>
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command switch to kill the task. You will be prompted for the PID and then
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the signal to send to kill it. For more on info on what signals you can
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send to a running process see the full manual on signals (type
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<command>man signal</command> in a &konsole; or go to
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<userinput>#signal</userinput> in &konqueror;).</para>
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<para>SSH, sessions, envars, other fun things.</para>
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<para>If you are using &konsole; for remote administration consider using
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&konsole;'s <quote>Session</quote> feature. To use this click on the menu
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entry
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<menuchoice><guimenu>Settings</guimenu><guimenuitem>Configure &konsole;</guimenuitem></menuchoice>.
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From here choose the <guimenuitem>Sessions</guimenuitem> tab and fill in the
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name for your new session. This will now become your default session when
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you start &konsole;.</para>
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<para>When &konsole; is invoked <application>bash</application> specific
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commands and &tde; specific variables are read and executed from
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<filename>~/.bashrc</filename> or <filename>~/.bash_profile</filename>.
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The preferred configuration file for user environments is
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<filename>~/.bash_profile</filename>, the commands
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<command>printenv</command> or <command>env</command> can be used to
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display all currently set variables. To set a variable in the shell use
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<command>VARNAME=<replaceable>value</replaceable></command>. For a full
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list of variables that can be set in &tde; see the <ulink
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url="http://wiki.kde.org/tiki-index.php?page=Environment+Variables">wiki
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</ulink>.</para>
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<para>Some tips and tricks</para>
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<para>To rename &konsole;'s session use <keycombo
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action="simul">&Ctrl;&Alt;<keycap>S</keycap></keycombo> and enter the new
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name.</para>
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<para>If you find the need to run any &tde; program with <systemitem
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class="username">root</systemitem> privileges, you can use the &tdesu; command with the <option>-c</option> switch
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from the command line like this: <userinput><command>tdesu</command>
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<option>-c -n <replaceable>PROGRAM</replaceable></option></userinput>, using
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the <option>-n</option> switch will prevent &tde; from remembering your
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passwords.</para>
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<!-- Add links to "further reading" here -->
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<itemizedlist>
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<title>Related Information</title>
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<listitem><para>The &konsole;
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Handbook has much more information about the features available in
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&konsole;. You can read it in &khelpcenter; or by entering
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<userinput>help:/konsole</userinput> in &konqueror;'s
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<guilabel>Location</guilabel> bar.</para>
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</listitem>
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</itemizedlist>
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</chapter>
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