246 lines
3.8 KiB
HTML
246 lines
3.8 KiB
HTML
<HTML
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><HEAD
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><TITLE
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>What If Nothing Works</TITLE
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><META
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NAME="GENERATOR"
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CONTENT="Modular DocBook HTML Stylesheet Version 1.63
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"><LINK
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REL="HOME"
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TITLE="Linux Backspace/Delete mini-HOWTO"
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HREF="index.html"><LINK
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REL="PREVIOUS"
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TITLE="What You Should Do On Your System"
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HREF="system.html"><LINK
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REL="NEXT"
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TITLE="More Hacking"
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HREF="morehack.html"></HEAD
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><BODY
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CLASS="SECT1"
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BGCOLOR="#FFFFFF"
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TEXT="#000000"
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LINK="#0000FF"
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VLINK="#840084"
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ALINK="#0000FF"
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><DIV
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CLASS="NAVHEADER"
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><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TH
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COLSPAN="3"
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ALIGN="center"
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>Linux <B
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CLASS="KEYCAP"
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>Backspace</B
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>/<B
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CLASS="KEYCAP"
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>Delete</B
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> mini-HOWTO</TH
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></TR
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><TR
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><TD
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WIDTH="10%"
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ALIGN="left"
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VALIGN="bottom"
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><A
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HREF="system.html"
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>Prev</A
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></TD
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><TD
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WIDTH="80%"
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ALIGN="center"
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VALIGN="bottom"
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></TD
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><TD
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WIDTH="10%"
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ALIGN="right"
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VALIGN="bottom"
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><A
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HREF="morehack.html"
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>Next</A
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></TD
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></TR
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></TABLE
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><HR
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ALIGN="LEFT"
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WIDTH="100%"></DIV
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="NOTWORK"
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>7. What If Nothing Works</A
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></H1
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><P
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>The first thing to do is understanding which <SPAN
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CLASS="ACRONYM"
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>ASCII</SPAN
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>
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codes are produced by a certain key using the <A
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HREF="system.html#DEVIANCE"
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>C
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one-liner</A
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>.</P
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><P
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>Once you know which sequences are produced, you must check the
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current <SPAN
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CLASS="APPLICATION"
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>terminfo</SPAN
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> entry with
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<B
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CLASS="COMMAND"
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>infocmp</B
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> (don't be scared by the amount of information
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printed!) and be sure that the <TT
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CLASS="LITERAL"
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>kbs</TT
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> and
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<TT
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CLASS="LITERAL"
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>kdch1</TT
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> capabilities correspond to the right sequences
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(that is, the one produced by the respective keys). Moreover, you must
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check with <B
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CLASS="COMMAND"
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>stty -a</B
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> that the erase character is the one
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emitted by the <B
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CLASS="KEYCAP"
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>Backspace</B
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> key (note that
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<TT
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CLASS="LITERAL"
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>^H</TT
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> represent <SPAN
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CLASS="SYMBOL"
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>BS</SPAN
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> whereas
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<TT
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CLASS="LITERAL"
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>^?</TT
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> represents <SPAN
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CLASS="SYMBOL"
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>DEL</SPAN
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>).</P
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><P
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>If there is a mismatch, there can be several different reason: wrong
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content of the <TT
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CLASS="ENVAR"
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>TERM</TT
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> variable, wrong entry of the terminal
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database, wrong terminal emulation under X. I hope at this point you have
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enough information to dig the solution autonomously.</P
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><DIV
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CLASS="NOTE"
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><P
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></P
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><TABLE
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CLASS="NOTE"
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WIDTH="100%"
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BORDER="0"
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><TR
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><TD
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WIDTH="25"
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ALIGN="CENTER"
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VALIGN="TOP"
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><IMG
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SRC="../images/note.gif"
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HSPACE="5"
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ALT="Note"></TD
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><TD
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ALIGN="LEFT"
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VALIGN="TOP"
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><P
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>If different applications behave in different ways, it is likely
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that some of them are using the terminal database correctly, and some are
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not. Remember that the fact that the keys produce the right behaviour in
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a certain application does not mean that the application is using
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correctly the terminal database—they could work just by chance. If you
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want to have an independent check, you can try whether the
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<A
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HREF="http://ne.dsi.unimi.it/"
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TARGET="_top"
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><B
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CLASS="COMMAND"
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>ne</B
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></A
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>
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editor works. <B
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CLASS="COMMAND"
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>ne</B
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> uses all terminal capabilities,
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including <TT
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CLASS="LITERAL"
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>kbs</TT
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> and <TT
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CLASS="LITERAL"
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>kdch1</TT
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>, and uses
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intended meaning only as a last resource.</P
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></TD
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></TR
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></TABLE
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></DIV
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></DIV
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><DIV
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CLASS="NAVFOOTER"
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><HR
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ALIGN="LEFT"
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WIDTH="100%"><TABLE
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WIDTH="100%"
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BORDER="0"
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CELLPADDING="0"
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CELLSPACING="0"
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><TR
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><TD
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WIDTH="33%"
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ALIGN="left"
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VALIGN="top"
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><A
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HREF="system.html"
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>Prev</A
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></TD
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><TD
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WIDTH="34%"
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ALIGN="center"
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VALIGN="top"
|
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><A
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HREF="index.html"
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>Home</A
|
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></TD
|
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><TD
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WIDTH="33%"
|
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ALIGN="right"
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VALIGN="top"
|
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><A
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HREF="morehack.html"
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>Next</A
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></TD
|
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></TR
|
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><TR
|
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><TD
|
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WIDTH="33%"
|
|
ALIGN="left"
|
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VALIGN="top"
|
|
>What You Should Do On Your System</TD
|
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><TD
|
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WIDTH="34%"
|
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ALIGN="center"
|
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VALIGN="top"
|
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> </TD
|
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><TD
|
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WIDTH="33%"
|
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ALIGN="right"
|
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VALIGN="top"
|
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>More Hacking</TD
|
|
></TR
|
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></TABLE
|
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></DIV
|
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></BODY
|
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></HTML
|
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> |