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| author | Laurent Bercot <ska-skaware@skarnet.org> | 2014-09-18 20:03:23 +0000 |
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| committer | Laurent Bercot <ska-skaware@skarnet.org> | 2014-09-18 20:03:23 +0000 |
| commit | f316a2ed52195135a35e32d7096e876357c48c69 (patch) | |
| tree | 5f4486b9a5a213a69e66ef574d6bc643a207981c /doc/background.html | |
| download | execline-f316a2ed52195135a35e32d7096e876357c48c69.tar.xz | |
initial commit: rc for execline-2.0.0.0
Diffstat (limited to 'doc/background.html')
| -rw-r--r-- | doc/background.html | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/doc/background.html b/doc/background.html new file mode 100644 index 0000000..85d2589 --- /dev/null +++ b/doc/background.html @@ -0,0 +1,57 @@ +<html> +<head> + <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /> + <meta http-equiv="Content-Language" content="en" /> + <title>execline: the background command</title> + <meta name="Description" content="execline: the background command" /> + <meta name="Keywords" content="execline command background" /> + <!-- <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>background</tt> program </h1> + +<tt>background</tt> launches a command in the background, then goes on +with the execution flow. + +<h2> Interface </h2> + +<p> + In an <a href="execlineb.html">execlineb</a> script: +</p> + +<pre> + background [ -d ] { <em>prog1...</em> } <em>prog2...</em> +</pre> + +<ul> + <li> <tt>background</tt> reads a <em>prog1...</em> command in a +<a href="el_semicolon.html">block</a> and unquotes it. </li> + <li> It spawns a child executing <em>prog1...</em>. </li> + <li> It sets the <tt>!</tt> environment +variable to the pid of the <em>prog1...</em> process. </li> + <li> It then execs into <em>prog2...</em>. </li> +</ul> + +<h2> Options </h2> + +<ul> + <li> <tt>-d</tt> : doublefork. If the <tt>-d</tt> option is set, +<em>prog1...</em> will run as a grandchild of <tt>background</tt>. </li> +</ul> + +<h2> Notes </h2> + +<ul> + <li> <tt>background <em>prog1...</em> "" <em>prog2...</em></tt> is +equivalent to <tt>sh -c '<em>prog1...</em> & ; exec <em>prog2...</em>'</tt>. </li> +</ul> + +</body> +</html> |