blob: dd68a3f775ccfb207189eb09b26e9166d234437c (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
|
<html>
<head>
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
<meta http-equiv="Content-Language" content="en" />
<title>execline: the heredoc program</title>
<meta name="Description" content="execline: the heredoc program" />
<meta name="Keywords" content="execline command heredoc here document" />
<!-- <link rel="stylesheet" type="text/css" href="//skarnet.org/default.css" /> -->
</head>
<body>
<p>
<a href="index.html">execline</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>
<h1> The <tt>heredoc</tt> program </h1>
<p>
<tt>heredoc</tt> runs a command with a certain string fed to a
file descriptor.
</p>
<h2> Interface </h2>
<pre>
heredoc [ -d ] <em>fd</em> <em>string</em> <em>prog...</em>
</pre>
<ul>
<li> <tt>heredoc</tt> execs into <em>prog...</em> with
<em>string</em> available on the <em>fd</em> file
descriptor. </li>
<li> <em>string</em> must not contain a null character. </li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-d</tt> : run the process feeding <em>string</em> to <em>fd</em>
as a grandchild of <tt>heredoc</tt>. This is meant to prevent a zombie
from hanging around if <em>prog...</em> has read <em>string</em> and fails
to wait for its children.</li>
</ul>
<h2> Notes </h2>
<ul>
<li> <tt>heredoc</tt> is meant to be used in place of the shell
<tt><<</tt> construct, which includes <em>here-documents</em>
into scripts. </li>
</ul>
</body>
</html>
|
