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diff --git a/doc/exec.html b/doc/exec.html new file mode 100644 index 0000000..8655541 --- /dev/null +++ b/doc/exec.html @@ -0,0 +1,50 @@ +<html> + <head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <title>execline: the exec program</title> + <meta name="Description" content="execline: the exec program" /> + <meta name="Keywords" content="execline command exec" /> + <!-- <link rel="stylesheet" type="text/css" href="http://skarnet.org/default.css" /> --> + </head> +<body> + +<p> +<a href="index.html">execline</a><br /> +<a href="http://skarnet.org/software/">Software</a><br /> +<a href="http://skarnet.org/">skarnet.org</a> +</p> + +<h1> The <tt>exec</tt> program </h1> + +<p> +<tt>exec</tt> executes the command line it is given. +</p> + +<h2> Interface </h2> + +<pre> + exec [ -c ] [ -l ] [ -a <em>argv0</em> ]<em>prog...</em> +</pre> + +<p> +<tt>exec</tt> execs into <em>prog...</em>. It does nothing else. +<br /> Without options, <tt>exec</tt> can be seen as the execline NOP. +</p> + +<h2> Options </h2> + +<ul> + <li> <tt>-c</tt> : empty the environment. <em>prog</em> is executed with no environment variables. <strong>Warning: </strong><em>prog</em> will run with an empty PATH, so make sure it does not rely on it. </li> + <li> <tt>-l</tt> : login. Prepends <em>prog</em>'s argv[0] with a dash. </li> + <li> <tt>-a <em>argv0</em></tt> : argv0. Replace <em>prog</em>'s argv[0] with <em>argv0</em>. This is done <em>before</em> adding a dash, if the <tt>-l</tt> option is also present. </li> +</ul> + +<p> +The <tt>exec</tt> command, along with its options, is designed to emulate +the standard <tt>exec</tt> shell builtin, which replaces the shell with the +command it is given. +</p> + +</body> +</html> |