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<title>s6-portable-utils: the s6-format-filter program</title>
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<p>
<a href="index.html">s6-portable-utils</a><br />
<a href="http://skarnet.org/software/">Software</a><br />
<a href="http://skarnet.org/">skarnet.org</a>
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<h1> The <tt>s6-format-filter</tt> program </h1>
<p>
s6-format-filter processes lines according to its arguments, and
prints the result.
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<h2> Interface </h2>
<pre>
s6-format-filter <em>format</em> [ <em>args...</em> ]
</pre>
<ul>
<li> <em>format</em> is a format string that can contain the following special sequences:
<tt>%%</tt>, <tt>%s</tt>, and <tt>%0</tt> to <tt>%9</tt>. </li>
<li> For every line it reads on stdin, s6-format-filter prints <em>format</em> on
stdout, replacing <tt>%%</tt> with <tt>%</tt>, <tt>%0</tt> with the command name
(probably <tt>s6-format-filter</tt>), <tt>%1</tt> to <tt>%9</tt> with the first
to the ninth argument in <em>args</em>, and <tt>%s</tt> with the input line. </li>
<li> s6-format-filter exits 0 when it reads EOF. </li>
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