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    <p>This seems to work:</p> <pre><code>awk -F, '{ p1 = substr($4, 1, 6); p2 = ("0x" substr($4, 7, 4)) + 0; p3 = ("0x" substr($4, 11, 4)) + 0; printf "%s,%s,%s,%s,%d,%d\n", $1, $2, $3, p1, p2, p3; }' </code></pre> <p>For your sample input data, it produces:</p> <pre><code>123711184642,02,3583090366663629,639f02,292,14292 123715942138,01,3538710295145500,639f02,45014,50755 123711616258,02,3548370476972758,639f02,72,22322 </code></pre> <p>The string concatenation of '0x' plus the 4-digit hex followed by adding 0 forces <code>awk</code> to treat the numbers as hexadecimals.</p> <p>You can simplify this to:</p> <pre><code>awk -F, '{ p1 = substr($4, 1, 6); p2 = "0x" substr($4, 7, 4); p3 = "0x" substr($4, 11, 4); printf "%s,%s,%s,%s,%d,%d\n", $1, $2, $3, p1, p2, p3; }' </code></pre> <p>The strings prefixed with 0x are forced to integer when presented to <code>printf()</code> and the <code>%d</code> format.</p> <hr> <p>The code above works beautifully with the native <code>awk</code> on MacOS X 10.6.5 (version 20070501); sadly, it does not work with GNU <code>gawk</code> 3.1.7. That, it seems, is permitted behaviour according to POSIX (see the comments below). However, <code>gawk</code> has a non-standard function <code>strtonum</code> that can be used to bludgeon it into performing correctly - pity that bludgeoning is necessary.</p> <pre><code>gawk -F, '{ p1 = substr($4, 1, 6); p2 = "0x" substr($4, 7, 4); p3 = "0x" substr($4, 11, 4); printf "%s,%s,%s,%s,%d,%d\n", $1, $2, $3, p1, strtonum(p2), strtonum(p3); }' </code></pre>
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    1. POConverting hex to decimal in awk or sed
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    1. USJonathan Leffler
    1. USJonathan Leffler
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    1. COI'm getting zeros in the last 2 columns. 123711184642,02,3583090366663629,639f02,0,0 123715942138,01,3538710295145500,639f02,0,0 123711616258,02,3548370476972758,639f02,0,0
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    2. COWhich version of `awk` on which platform? I'm using MacOS X 10.6.5 and its awk - version 20070501; when I use gawk 3.1.7, it gives zeroes. That's worth a bug report to GNU. I'll work on a workaround...
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    3. COI'm getting similar results on Redhat Linux 2.6 and SunOS 5.10 using GNU Awk 3.1.5
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