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| -rw-r--r-- | manual/index.html | 12 |
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diff --git a/manual/index.html b/manual/index.html index 24d48035..038af524 100644 --- a/manual/index.html +++ b/manual/index.html @@ -8016,8 +8016,8 @@ comment and is ignored.</p> <p>Backslash continuing the comment on the next line can be useful when writing the "shebang" for a jq script:</p> <pre><code>#!/bin/sh -- -# sum - Output the sum of the given arguments (or stdin) -# usage: sum [numbers...] +# total - Output the sum of the given arguments (or stdin) +# usage: total [numbers...] # \ exec jq --args -MRnf "$0" -- "$@" @@ -8030,16 +8030,16 @@ reduce ( . as $dot | try tonumber catch false | if not or isnan then - @json "sum: Invalid number \($dot).\n" | halt_error(1) + @json "total: Invalid number \($dot).\n" | halt_error(1) end ) as $n (0; . + $n) </code></pre> <p>The <code>exec</code> line is considered a comment by jq, so it is ignored. But it is not ignored by <code>sh</code>, since in <code>sh</code> a backslash at the end of the line does not continue the comment. -With this trick, when the script is invoked as <code>sum 1 2</code>, -<code>/bin/sh -- /path/to/sum 1 2</code> will be run, and <code>sh</code> will then -run <code>exec jq --args -MRnf /path/to/sum -- 1 2</code> replacing itself +With this trick, when the script is invoked as <code>total 1 2</code>, +<code>/bin/sh -- /path/to/total 1 2</code> will be run, and <code>sh</code> will then +run <code>exec jq --args -MRnf /path/to/total -- 1 2</code> replacing itself with a <code>jq</code> interpreter invoked with the specified options (<code>-M</code>, <code>-R</code>, <code>-n</code>, <code>--args</code>), that evaluates the current file (<code>$0</code>), with the arguments (<code>$@</code>) that were passed to <code>sh</code>.</p> |