blob: 6392963adcb6599fdc51db248b35926298887a81 (
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
58
59
60
61
62
63
64
65
66
67
|
<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>s6: the s6-envdir program</title>
<meta name="Description" content="s6: the s6-envdir program" />
<meta name="Keywords" content="s6 command s6-envdir dir environment modification" />
<!-- <link rel="stylesheet" type="text/css" href="//skarnet.org/default.css" /> -->
</head>
<body>
<p>
<a href="index.html">s6</a><br />
<a href="//skarnet.org/software/">Software</a><br />
<a href="//skarnet.org/">skarnet.org</a>
</p>
<h1> The s6-envdir program </h1>
<p>
s6-envdir changes its environment, then executes into another program.
</p>
<h2> Interface </h2>
<pre>
s6-envdir [ -I | -i ] [ -n ] [ -f ] [ -c <em>nullis</em> ] <em>dir</em> <em>prog...</em>
</pre>
<ul>
<li> s6-envdir reads files in <em>dir</em>. For every file <em>f</em> in <em>dir</em>,
that does not begin with a dot and does not contain the '=' character: </li>
<li> If <em>f</em> is empty, remove a variable named <em>f</em> from the environment, if any. </li>
<li> Else add a variable named <em>f</em> to the environment (or replace <em>f</em> if it
already exists) with the first line of the contents of file <em>f</em> as value.
Spaces and tabs at the end of this line are removed, as well as any trailing newline;
null characters in this line are changed to newlines in the environment variable.</li>
</ul>
<h2> Options </h2>
<ul>
<li> <tt>-i</tt> : strict. If <em>dir</em> does not exist, exit 111 with an
error message. This is the default. </li>
<li> <tt>-I</tt> : loose. If <em>dir</em> does not exist, exec into
<em>prog</em> without modifying the environment first. </li>
<li> <tt>-f</tt> : verbatim mode. All the file is given as the value of the
environment variable, including newlines (except the last one if the <tt>-n</tt>
option is not given). Null characters are still translated. </li>
<li> <tt>-n</tt> : do not chomp. If the <tt>-f</tt> option is given and the
file ends with a newline, keep that last newline in the value. If the <tt>-f</tt>
option is not given, keep the trailing blanks at the end of the first line (but
not the ending newline). </li>
<li> <tt>-c</tt> <em>nullis</em> : replace null characters with the
first character of <em>nullis</em> instead of a newline. </li>
</ul>
<h2> Notes </h2>
<p>
s6-envdir without options behaves exactly like
<a href="https://cr.yp.to/daemontools/envdir.html">envdir</a>.
</p>
</body>
</html>
|
