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authorTobias Klauser <tklauser@distanz.ch>2008-01-27 11:37:44 +0100
committerTobias Klauser <tklauser@xenon.tklauser.home>2008-01-27 11:37:44 +0100
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+<title>GDB Debugger</title>
+<head>
+<script language="JavaScript">
+</script>
+</head>
+<body bgcolor="#ffffcc">
+<hr>
+<center>
+<h1>GDB Debugger</h1>
+</center>
+<hr>
+<p>
+The other common debug programs on Unix systems are dbx and dbxtool.<p>
+Before a program can be processed by the debugger, it must be compiled
+with the debugger option.
+<pre>
+ gcc -ggdb -o pipe pipe.c
+</pre>
+The program can then be passed to the debugger with
+<pre>
+ gdb pipe
+</pre>
+To pass command line parameters to the program use:
+<pre>
+ set args -size big
+</pre>
+This is equivalent to saying:
+<pre>
+ pipe -size big
+</pre>
+To single step:
+<pre>
+ break
+ run
+ step
+</pre>
+The <b>step</b> command stops execution at the next source statement,
+if that statement is a function call, gdb will single step into the function.
+<br>
+ A simular command is <b>next</b> this will also single step source
+statements but when a it meets a function call, the function is executed
+and gdb stops when it reaches a new source statement in the calling
+function.
+<p>
+<b>step</b> can be abreviated to <b>s</b>
+<br>
+<b>next</b> can be abreviated to <b>n</b>
+<p>
+To set break points:
+<pre>
+ break 48 <-- Program will stop BEFORE executing line 48
+ break FuncName <-- Program will stop when entering the function
+ run
+</pre>
+To display the contents of a variable:
+<pre>
+ print ant[0]
+</pre>
+
+To change the value of a variable:
+<pre>
+ set ant[0] = 4
+ set char = 'z'
+</pre>
+
+<p>
+<hr>
+<p>
+<center>
+<table border=2 width=80% bgcolor="ivory">
+<tr align=center>
+<td width=25%>
+<a href=../cref.html> Top</a>
+</td><td width=25%>
+<a href=../master_index.html> Master Index</a>
+</td><td width=25%>
+<a href=../SYNTAX/keywords.html> Keywords</a>
+</td><td width=25%>
+<a href=../FUNCTIONS/funcref.htm> Functions</a>
+</td>
+</tr>
+</table>
+</center>
+<p>
+<hr>
+<address>Martin Leslie
+</address><p>