<HTML ><HEAD ><TITLE >List of Terms</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.57"><LINK REL="HOME" TITLE="Majordomo and MajorCool HOWTO" HREF="index.html"><LINK REL="PREVIOUS" TITLE="Frequently Asked Questions" HREF="x478.html"></HEAD ><BODY CLASS="GLOSSARY" BGCOLOR="#FFFFFF" TEXT="#000000" LINK="#0000FF" VLINK="#840084" ALINK="#0000FF" ><DIV CLASS="NAVHEADER" ><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="3" ALIGN="center" >Majordomo and MajorCool HOWTO</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="bottom" ><A HREF="x478.html" >Prev</A ></TD ><TD WIDTH="80%" ALIGN="center" VALIGN="bottom" ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="bottom" > </TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="GLOSSARY" ><H1 ><A NAME="AEN516" >List of Terms</A ></H1 ><DL ><DT ><A NAME="DEF-DIGEST" ><B >digest</B ></A ></DT ><DD ><P >a collection of new messages mailed to the members of an archived list as one message. A list is called digested when it is archived and, periodically, a digest is sent out.</P ></DD ><DT ><A NAME="DEF-GID" ><B >Group ID</B ></A ></DT > (GID)<DD ><P >an identification number assigned to files, directories, and processes to restrict access--similar to UID except multiple people can be a member of a group. On Unix-type systems, groups can be set up (defined in the <TT CLASS="FILENAME" >/etc/group</TT > file). When a user name is a member of a group, she can access files created with that GID (assuming permissions allow it).</P ></DD ><DT ><A NAME="DEF-MTA" ><B >Mail Transfer Agent</B ></A ></DT > (MTA)<DD ><P >a program, such as Sendmail, responsible for passing mail from one location to another.</P ></DD ><DT ><A NAME="DEF-SGID" ><B >Set Group ID</B ></A ></DT > (SGID)<DD ><P >a file attribute which allows a program to run with specific group privileges no matter who executes it.</P ></DD ><DT ><A NAME="DEF-SMRSH" ><B ><B CLASS="COMMAND" >smrsh</B ></B ></A ></DT ><DD ><P >(SendMail Restricted SHell) the shell that Sendmail uses to execute programs. <B CLASS="COMMAND" >smrsh</B > puts restrictions on the programs that can be run to make it safer than using a regular shell such as the Bourne Shell.</P ></DD ><DT ><A NAME="DEF-SUID" ><B >Set User ID</B ></A ></DT > (SUID)<DD ><P >a file attribute which allows a program to run as a specific user no matter who executes it.</P ></DD ><DT ><A NAME="DEF-UID" ><B >User ID</B ></A ></DT > (UID)<DD ><P >an identification number assigned to files directories, and processes--similar to GID except every user has a unique UID. Every process must run under a UID (the one-to-one relationship between the UID and user name is defined in <TT CLASS="FILENAME" >/etc/passwd</TT >). The process' UID determines what the program can access. In general a regular user can change the permissions on files that she owns unless the UID is 0 (the <TT CLASS="LITERAL" >root</TT > user). In that case, <TT CLASS="LITERAL" >root</TT > can modify any files on the system.</P ></DD ><DT ><A NAME="DEF-WRAPPER" ><B >wrapper</B ></A ></DT ><DD ><P >a program used to start another program; usually a wrapper is SUID or SGID so it can bestow privileges onto another program that the other program would not normally have.</P ></DD ></DL ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="x478.html" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" > </TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >Frequently Asked Questions</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" > </TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" > </TD ></TR ></TABLE ></DIV ></BODY ></HTML >