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POStrip color code from sed output
 

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  1. POStrip color code from sed output
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    <p>I was working on a little script that would do some logging for me from an asterisk machine. From the linux (centOS) command line, I can type:</p> <pre><code>asterisk -rx "transcoder show" </code></pre> <p>which provides the output I need to log. This output looks like this:</p> <pre><code>5/5 encoders/decoders of 120 channels are in use. </code></pre> <p>I wanted to write a line to a log file that would look like this:</p> <pre><code>YYYY-MM-DD HH-MM-SS #encoders #decoders </code></pre> <p>and then I'd log this every couple of minutes, and I'd have a history of how many channels I was using. So I wrote a little php script:</p> <pre><code>&lt;?php exec("asterisk -rx \"transcoder show\" | sed 's|\\([0-9]*\\)\/\\([0-9]*\\).*|\\1:\\2|'",$retval); $time = date('Y-m-d h:i:s'); $vals = explode(":",$retval[0]); $encoders = trim($vals[0]); $decoders = trim($vals[1]); $logString = "$time\t$encoders\t$decoders\n"; $fh = fopen('/root/script/trans.log','a'); fwrite($fh,$logString); fclose($fh); ?&gt; </code></pre> <p>Sorry, the code is a little funky there, theoretically I should have been able to output exactly what I needed from sed, but the code you see there is after I had changed it to try to address the problem you'll se below. In testing, I found the sed script worked fine from the command line; it output #encoders:#decoders as expected. But, when I ran the php script, it was writing lines like this to the log file:</p> <pre><code>2011-06-13 10:24:02 ^[[0;37;40m6 6 </code></pre> <p>I can't figure out where the ^[[0;37;40m is coming from. It's a color code, I understand, to set the color for displaying the text in the shell, but is that something sed is adding, or is it coming from the original output? How do I get rid of it? If I use an echo statement to print the variables $encoders and $decoders to the command line, there is no special color formatting, nor is there in the output from the original asterisk -rx command.</p>
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