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<HTML><!--Distributed by F --><HEAD><TITLE>[Chapter 5] 5.4 Setting the TERMCAP Variable with tset </TITLE><METANAME="DC.title"CONTENT="UNIX Power Tools"><METANAME="DC.creator"CONTENT="Jerry Peek, Tim O'Reilly &amp; Mike Loukides"><METANAME="DC.publisher"CONTENT="O'Reilly &amp; Associates, Inc."><METANAME="DC.date"CONTENT="1998-08-04T21:33:01Z"><METANAME="DC.type"CONTENT="Text.Monograph"><METANAME="DC.format"CONTENT="text/html"SCHEME="MIME"><METANAME="DC.source"CONTENT="1-56592-260-3"SCHEME="ISBN"><METANAME="DC.language"CONTENT="en-US"><METANAME="generator"CONTENT="Jade 1.1/O'Reilly DocBook 3.0 to HTML 4.0"><LINKREV="made"HREF="mailto:online-books@oreilly.com"TITLE="Online Books Comments"><LINKREL="up"HREF="ch05_01.htm"TITLE="5. Setting Up Your Terminal"><LINKREL="prev"HREF="ch05_03.htm"TITLE="5.3 Setting the Terminal Type When You Log In "><LINKREL="next"HREF="ch05_05.htm"TITLE="5.5 Querying Your Terminal Type: qterm "></HEAD><BODYBGCOLOR="#FFFFFF"TEXT="#000000"><DIVCLASS="htmlnav"><H1><IMGSRC="gifs/smbanner.gif"ALT="UNIX Power Tools"USEMAP="#srchmap"BORDER="0"></H1><MAPNAME="srchmap"><AREASHAPE="RECT"COORDS="0,0,466,58"HREF="index.htm"ALT="UNIX Power Tools"><AREASHAPE="RECT"COORDS="467,0,514,18"HREF="jobjects/fsearch.htm"ALT="Search this book"></MAP><TABLEWIDTH="515"BORDER="0"CELLSPACING="0"CELLPADDING="0"><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_03.htm"TITLE="5.3 Setting the Terminal Type When You Log In "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 5.3 Setting the Terminal Type When You Log In "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><B><FONTFACE="ARIEL,HELVETICA,HELV,SANSERIF"SIZE="-1">Chapter 5<BR>Setting Up Your Terminal</FONT></B></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_05.htm"TITLE="5.5 Querying Your Terminal Type: qterm "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 5.5 Querying Your Terminal Type: qterm "BORDER="0"></A></TD></TR></TABLE>&nbsp;<HRALIGN="LEFT"WIDTH="515"TITLE="footer"></DIV><DIVCLASS="SECT1"><H2CLASS="sect1"><ACLASS="title"NAME="UPT-ART-0078">5.4 Setting the TERMCAP Variable with tset </A></H2><TABLECLASS="para.programreference"BORDER="1"><TR><THVALIGN="TOP"><ACLASS="xref.warning"HREF="ch39_08.htm"TITLE="39.8 A Big Environment Can Slow You Down ">Warning!</A> </TH><TDVALIGN="TOP"><ACLASS="indexterm"NAME="AUTOID-5018"></A><ACLASS="indexterm"NAME="AUTOID-5021"></A>For C shell users,<SPANCLASS="link"><EMCLASS="emphasis">tset</EM> (<ACLASS="linkend"HREF="ch05_03.htm"TITLE="Setting the Terminal Type When You Log In ">5.3</A>)</SPAN>has an even more powerfulfunction.The <EMCLASS="emphasis">-s</EM> option causes it to send to standardoutput a series of C shell commands not only to set <EMCLASS="emphasis">TERM</EM>, but alsoto set the <EMCLASS="emphasis">TERMCAP</EM> variable to the actual contents of the<EMCLASS="emphasis">termcap</EM> entry. This speeds up launch time for programs thatuse <EMCLASS="emphasis">termcap</EM>: they no longer need to search throughthe <EMCLASS="emphasis">/etc/termcap</EM> file until they find the relevant entry;it is already at hand.</TD></TR></TABLE><PCLASS="para">Invoke <EMCLASS="emphasis">tset</EM> as follows:</P><PCLASS="para"><TABLECLASS="screen.co"BORDER="1"><TR><THVALIGN="TOP"><PRECLASS="calloutlist">&#13;<ACLASS="co"HREF="ch08_10.htm"TITLE="8.10 eval: When You Need Another Chance ">eval</A> </PRE></TH><TDVALIGN="TOP"><PRECLASS="screen">set noglobeval `tset -Q -s <CODECLASS="replaceable"><I>other-options-here</I></CODE>`</PRE></TD></TR></TABLE></P><PCLASS="para">&#13;In order to understand what <EMCLASS="emphasis">tset</EM> is doing, let's takea moment to send its output to the screen (i.e., issue the commandwithout evaluating it):</P><PCLASS="para"><BLOCKQUOTECLASS="screen"><PRECLASS="screen">% <CODECLASS="userinput"><B>tset -Q -s wy50</B></CODE>set noglob;setenv TERM wy50 ;setenv TERMCAP 'n9|wy50:li#24:co#80:am:bs:bw:ul:\:cm=\E=%+\040%+\040:nd=^L:up=^K:do=^J:ho=^^:bt=\EI:\:cl=^Z:ce=\ET:cd=\EY:al=\EE:dl=\ER:ic=\EQ:dc=\EW:\:so=\EG4:se=\EGO:sg#1:ue=\EGO:us=\EG8:ug#1\040:\:me=\E(EGO:mb=\EG2:mp=\E):mh=\EGp:mr=\EG4:mk=\EG1:\:kl=^H:kr=^L:ku=^K:kd=^J:kh=^^:k1=^A@^M:k2=^AA^M:\:k3=^AB^M:k4=^AC^M:k5=^AD^M:k6=^AE^M:k7=^AF^M:k8=^AG^M:\:k9=^AH^M:k0=^AI^M';unset noglob;</PRE></BLOCKQUOTE></P><PCLASS="para">(Article<ACLASS="xref"HREF="ch41_11.htm"TITLE="How termcap and terminfo Describe Terminals ">41.11</A>explains the format of <EMCLASS="emphasis">termcap</EM> entries.)The<ACLASS="indexterm"NAME="AUTOID-5047"></A><SPANCLASS="link"><CODECLASS="literal">set</CODE>&nbsp;<CODECLASS="literal">noglob</CODE> command (<ACLASS="linkend"HREF="ch06_09.htm"TITLE="Special C Shell Variables ">6.9</A>)</SPAN>causes the shell to suspendinterpretation of special characters; the presenceof these characters in the <EMCLASS="emphasis">termcap</EM> entry could causeproblems. After execution, the shell is reset to its normal state.</P><PCLASS="para">Article<ACLASS="xref"HREF="ch42_03.htm"TITLE="Why Changing TERM Sometimes Doesn't Work ">42.3</A>explains a situation where these changes won't work.</P><DIVCLASS="sect1info"><PCLASS="SECT1INFO">- <SPANCLASS="authorinitials">TOR</SPAN> <SPANCLASS="bibliomisc">from O'Reilly &amp; Associates' <CITECLASS="citetitle">termcap &amp; terminfo</CITE>, Chapter 4</SPAN></P></DIV></DIV><DIVCLASS="htmlnav"><P></P><HRALIGN="LEFT"WIDTH="515"TITLE="footer"><TABLEWIDTH="515"BORDER="0"CELLSPACING="0"CELLPADDING="0"><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_03.htm"TITLE="5.3 Setting the Terminal Type When You Log In "><IMGSRC="gifs/txtpreva.gif"SRC="gifs/txtpreva.gif"ALT="Previous: 5.3 Setting the Terminal Type When You Log In "BORDER="0"></A></TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><ACLASS="book"HREF="index.htm"TITLE="UNIX Power Tools"><IMGSRC="gifs/txthome.gif"SRC="gifs/txthome.gif"ALT="UNIX Power Tools"BORDER="0"></A></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172"><ACLASS="SECT1"HREF="ch05_05.htm"TITLE="5.5 Querying Your Terminal Type: qterm "><IMGSRC="gifs/txtnexta.gif"SRC="gifs/txtnexta.gif"ALT="Next: 5.5 Querying Your Terminal Type: qterm "BORDER="0"></A></TD></TR><TR><TDALIGN="LEFT"VALIGN="TOP"WIDTH="172">5.3 Setting the Terminal Type When You Log In </TD><TDALIGN="CENTER"VALIGN="TOP"WIDTH="171"><ACLASS="index"HREF="index/idx_0.htm"TITLE="Book Index"><IMGSRC="gifs/index.gif"SRC="gifs/index.gif"ALT="Book Index"BORDER="0"></A></TD><TDALIGN="RIGHT"VALIGN="TOP"WIDTH="172">5.5 Querying Your Terminal Type: qterm </TD></TR></TABLE><HRALIGN="LEFT"WIDTH="515"TITLE="footer"><IMGSRC="gifs/smnavbar.gif"SRC="gifs/smnavbar.gif"USEMAP="#map"BORDER="0"ALT="The UNIX CD Bookshelf Navigation"><MAPNAME="map"><AREASHAPE="RECT"COORDS="0,0,73,21"HREF="../index.htm"ALT="The UNIX CD Bookshelf"><AREASHAPE="RECT"COORDS="74,0,163,21"HREF="index.htm"ALT="UNIX Power Tools"><AREASHAPE="RECT"COORDS="164,0,257,21"HREF="../unixnut/index.htm"ALT="UNIX in a Nutshell"><AREASHAPE="RECT"COORDS="258,0,321,21"HREF="../vi/index.htm"ALT="Learning the vi Editor"><AREASHAPE="RECT"COORDS="322,0,378,21"HREF="../sedawk/index.htm"ALT="sed &amp; awk"><AREASHAPE="RECT"COORDS="379,0,438,21"HREF="../ksh/index.htm"ALT="Learning the Korn Shell"><AREASHAPE="RECT"COORDS="439,0,514,21"HREF="../lrnunix/index.htm"ALT="Learning the UNIX Operating System"></MAP></DIV></BODY></HTML>
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