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diff --git a/sag-0.6.1-www/Invisible/sag-0.6/node23.html b/sag-0.6.1-www/Invisible/sag-0.6/node23.html new file mode 100644 index 0000000..609e3c3 --- /dev/null +++ b/sag-0.6.1-www/Invisible/sag-0.6/node23.html @@ -0,0 +1,153 @@ +<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN"> +<!--Converted with LaTeX2HTML 96.1-h (September 30, 1996) by Nikos Drakos (nikos@cbl.leeds.ac.uk), CBLU, University of Leeds --> +<HTML> +<HEAD> +<TITLE>The /etc directory</TITLE> +<META NAME="description" CONTENT="The /etc directory"> +<META NAME="keywords" CONTENT="sag"> +<META NAME="resource-type" CONTENT="document"> +<META NAME="distribution" CONTENT="global"> +<LINK REL=STYLESHEET HREF="sag.css"> +</HEAD> +<BODY LANG="EN" > + <A NAME="tex2html582" HREF="node24.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="./next_motif.gif"></A> <A NAME="tex2html580" HREF="node22.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="./up_motif.gif"></A> <A NAME="tex2html574" HREF="node22.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="./previous_motif.gif"></A> <A NAME="tex2html584" HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="./contents_motif.gif"></A> <A NAME="tex2html585" HREF="node114.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="./index_motif.gif"></A> <BR> +<B> Next:</B> <A NAME="tex2html583" HREF="node24.html">The /dev directory</A> +<B>Up:</B> <A NAME="tex2html581" HREF="node22.html">The root filesystem</A> +<B> Previous:</B> <A NAME="tex2html575" HREF="node22.html">The root filesystem</A> +<BR> <P> +<A NAME="730"> </A><H2><A NAME="SECTION00421000000000000000">The <tt>/etc</tt> directory</A></H2> +<P> + The <tt>/etc</tt><A NAME="732"> </A> directory contains a lot of files. Some of them + are described below. For others, you should determine which + program they belong to and read the manual page for that program. + Many networking configuration files are in <tt>/etc</tt><A NAME="734"> </A> as well, + and are described in the Networking Administrators' Guide. + <DL ><DT><STRONG><tt>/etc/rc</tt><A NAME="736"> </A> or <tt>/etc/rc.d</tt><A NAME="738"> </A> or <tt>/etc/rc?.d</tt><A NAME="740"> </A></STRONG> +<DD> + Scripts or directories of scripts to run at startup or when + changing the run level. + See the chapter on <tt>init</tt><A NAME="742"> </A> for further information. +<P> + <DT><STRONG><tt>/etc/passwd</tt><A NAME="744"> </A></STRONG> +<DD> + The user database, with fields giving the username, real name, + home directory, encrypted password, and other information about + each user. The format is documented in the <em>passwd</em><A NAME="746"> </A> + manual page. +<P> + <DT><STRONG><tt>/etc/fdprm</tt><A NAME="748"> </A></STRONG> +<DD> + Floppy disk parameter table. Describes what different floppy + disk formats look like. Used by <tt>setfdprm</tt><A NAME="750"> </A>. See + the <em>setfdprm</em><A NAME="752"> </A> manual page for more information. +<P> + <DT><STRONG><tt>/etc/fstab</tt><A NAME="754"> </A></STRONG> +<DD> + Lists the filesystems mounted automatically at startup + by the <tt>mount -a</tt> command (in <tt>/etc/rc</tt><A NAME="756"> </A> or equivalent + startup file). Under Linux, also contains information about swap + areas used automatically by <tt>swapon -a</tt>. + See section <A HREF="node46.html#subsecmount">4.8.5</A> and the + <em>mount</em><A NAME="758"> </A> manual page for more information. +<P> + <DT><STRONG><tt>/etc/group</tt><A NAME="760"> </A></STRONG> +<DD> + Similar to <tt>/etc/passwd</tt><A NAME="762"> </A>, but describes + groups instead of users. See the <em>group</em><A NAME="764"> </A> manual page for + more information. +<P> + <DT><STRONG><tt>/etc/inittab</tt><A NAME="766"> </A></STRONG> +<DD> + Configuration file for <tt>init</tt><A NAME="768"> </A>. +<P> + <DT><STRONG><tt>/etc/issue</tt><A NAME="770"> </A></STRONG> +<DD> + Output by <tt>getty</tt><A NAME="772"> </A> before the login prompt. Usually contains + a short description or welcoming message to the system. The + contents are up to the system administrator. +<P> + <DT><STRONG><tt>/etc/magic</tt><A NAME="774"> </A></STRONG> +<DD> + The configuration file for <tt>file</tt><A NAME="776"> </A>. Contains + the descriptions of various file formats based on which + <tt>file</tt><A NAME="778"> </A> guesses the type of the file. See the <em>magic</em><A NAME="780"> </A> + and <em>file</em><A NAME="782"> </A> manual pages for more information. +<P> + <DT><STRONG><tt>/etc/motd</tt><A NAME="784"> </A></STRONG> +<DD> + The <b>message of the day</b>, automatically output after + a successful login. Contents are up to the system administrator. + Often used for getting information to every user, such as + warnings about planned downtimes. +<P> + <DT><STRONG><tt>/etc/mtab</tt><A NAME="787"> </A></STRONG> +<DD> + List of currently mounted filesystems. Initially set up by + the scripts, and updated automatically by the <tt>mount</tt><A NAME="789"> </A> command. + Used when a list of mounted filesystems is needed, e.g., by + the <tt>df</tt><A NAME="791"> </A> command. +<P> + <DT><STRONG><tt>/etc/shadow</tt><A NAME="793"> </A></STRONG> +<DD> + Shadow password file on systems with shadow password software + installed. Shadow passwords move the encrypted password from + <tt>/etc/passwd</tt><A NAME="795"> </A> into <tt>/etc/shadow</tt><A NAME="797"> </A>; the latter is not + readable by anyone except <tt>root</tt>. This makes it harder + to crack passwords. +<P> + <DT><STRONG><tt>/etc/login.defs</tt><A NAME="799"> </A></STRONG> +<DD> + Configuration file for the <tt>login</tt><A NAME="801"> </A> command. +<P> + <DT><STRONG><tt>/etc/printcap</tt><A NAME="803"> </A></STRONG> +<DD> + Like <tt>/etc/termcap</tt><A NAME="805"> </A>, but intended for printers. Different + syntax. +<P> + <DT><STRONG><tt>/etc/profile</tt><A NAME="807"> </A>, <tt>/etc/csh.login</tt><A NAME="809"> </A>, <tt>/etc/csh.cshrc</tt><A NAME="811"> </A></STRONG> +<DD> + Files executed at login or startup time by the Bourne or + C shells. These allow the system administrator to set global + defaults for all users. + See the manual pages for the respective shells. +<P> + <DT><STRONG><tt>/etc/securetty</tt><A NAME="813"> </A></STRONG> +<DD> + Identifies secure terminals, i.e., the terminals from which + <tt>root</tt> is allowed to log in. + Typically only the virtual + consoles are listed, so that it becomes impossible (or at + least harder) to gain superuser privileges by breaking into a + system over a modem or a network. +<P> + <DT><STRONG><tt>/etc/shells</tt><A NAME="815"> </A></STRONG> +<DD> + Lists trusted shells. The <tt>chsh</tt><A NAME="817"> </A> command allows users + to change their login shell only to shells listed in this + file. <tt>ftpd</tt><A NAME="819"> </A>, the server process that provides FTP + services for a machine, will check that the user's shell is + listed in <tt>/etc/shells</tt><A NAME="821"> </A> and will not let people log in + unles the shell is listed there. +<P> + <DT><STRONG><tt>/etc/termcap</tt><A NAME="823"> </A></STRONG> +<DD> + The terminal capability database. Describes by what ``escape + sequences'' various terminals can be controlled. Programs are + written so that instead of directly outputting an escape + sequence that only works on a particular brand of terminal, + they look up the correct sequence to do whatever it is they + want to do in <tt>/etc/termcap</tt><A NAME="825"> </A>. As a result most programs + work with most kinds of terminals. See the + <em>termcap</em><A NAME="827"> </A>, <em>curs_termcap</em><A NAME="829"> </A>, and <em>terminfo</em><A NAME="831"> </A> + manual pages for more information. +<P> +</DL><HR><A NAME="tex2html582" HREF="node24.html"><IMG WIDTH=37 HEIGHT=24 ALIGN=BOTTOM ALT="next" SRC="./next_motif.gif"></A> <A NAME="tex2html580" HREF="node22.html"><IMG WIDTH=26 HEIGHT=24 ALIGN=BOTTOM ALT="up" SRC="./up_motif.gif"></A> <A NAME="tex2html574" HREF="node22.html"><IMG WIDTH=63 HEIGHT=24 ALIGN=BOTTOM ALT="previous" SRC="./previous_motif.gif"></A> <A NAME="tex2html584" HREF="node1.html"><IMG WIDTH=65 HEIGHT=24 ALIGN=BOTTOM ALT="contents" SRC="./contents_motif.gif"></A> <A NAME="tex2html585" HREF="node114.html"><IMG WIDTH=43 HEIGHT=24 ALIGN=BOTTOM ALT="index" SRC="./index_motif.gif"></A> <BR> +<B> Next:</B> <A NAME="tex2html583" HREF="node24.html">The /dev directory</A> +<B>Up:</B> <A NAME="tex2html581" HREF="node22.html">The root filesystem</A> +<B> Previous:</B> <A NAME="tex2html575" HREF="node22.html">The root filesystem</A> +<P><ADDRESS> +<I>Lars Wirzenius <BR> +Sat Nov 15 02:32:11 EET 1997</I> +</ADDRESS> +</BODY> +</HTML> |