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PObash sort - how do I sort using timestamp
 

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  1. PObash sort - how do I sort using timestamp
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    <p>I need to sort a file using shell sort in linux. The sort needs to be based on timestamp values contained within each of file's rows. The timestamps are of irregular format and don’t specify the leading zeros to months, days, etc, so the sorts I am performing are not correct (i.e. their format is “M/D/YYYY H:MI:S AM”; so so “10/12/2012 12:16:18 PM” comes before “7/24/2012 12:16:18 PM”, which comes before “7/24/2012 12:17:18 AM”). </p> <p>Is it possible to sort based on timestamps?</p> <p>I am using the following command to sort my file:</p> <pre><code>sort -t= -k3 file.txt -o file.txt.sorted </code></pre> <p>(use equal sign as a separator => <code>-t=</code>; use 3rd column as a sort column => <code>-k3</code>)</p> <p>A sample file is as follows:</p> <pre><code>&lt;r id="abcd" t="10/12/2012 12:16:17 AM"&gt;&lt;d&gt;&lt;nv n="name" v="868" /&gt;&lt;nv n="name0" v="73" /&gt;&lt;nv n="name1" v="13815004" /&gt;&lt;/d&gt;&lt;/r&gt; &lt;r id="defg" t="7/24/2012 12:16:17 PM"&gt;&lt;d&gt;&lt;nv n="name" v="0" /&gt;&lt;nv n="name0" v="0" /&gt;&lt;nv n="name1" v="0" /&gt;&lt;/d&gt;&lt;/r&gt; &lt;r id="abcd" t="7/24/2012 12:16:17 PM"&gt;&lt;d&gt;&lt;nv n="name" v="0" /&gt;&lt;nv n="name0" v="0" /&gt;&lt;nv n="name1" v="0" /&gt;&lt;/d&gt;&lt;/r&gt; &lt;r id="zxy" t="7/24/2012 12:16:17 PM"&gt;&lt;d&gt;&lt;nv n="name" v="0" /&gt;&lt;nv n="name0" v="0" /&gt;&lt;nv n="name1" v="59542676" /&gt;&lt;/d&gt;&lt;/r&gt; &lt;r id="fghj" t="7/24/2012 12:16:17 PM"&gt;&lt;d&gt;&lt;nv n="name" v="38" /&gt;&lt;nv n="name0" v="0" /&gt;&lt;nv n="name1" v="3004537" /&gt;&lt;/d&gt;&lt;/r&gt; &lt;r id="defg" t="7/24/2012 12:16:18 AM"&gt;&lt;d&gt;&lt;nv n="name" v="177" /&gt;&lt;nv n="name0" v="0" /&gt;&lt;nv n="name1" v="5888870" /&gt;&lt;/d&gt;&lt;/r&gt; </code></pre>
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    1. USuser2616110
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    1. CO"As follows" what?
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      1. USDavid Jashi
    2. COA sample file: <r id="abcd" t="10/12/2012 12:16:17 AM"><d><nv n="n" v="868" /><nv n="name0" v="73" /><nv n="name1" v="13815004" /></d></r> <r id="defg" t="7/24/2012 12:16:17 PM"><d><nv n="n" v="0" /><nv n="name0" v="0" /><nv n="name1" v="0" /></d></r> <r id="abcd" t="7/24/2012 12:16:17 PM"><d><nv n="n" v="0" /><nv n="name0" v="0" /><nv n="name1" v="0" /></d></r> <r id="zxy" t="7/24/2012 12:16:17 PM"><d><nv n="name" v="0" /><nv n="n0" v="0" /><nv n="n1" v="59542676" /></d></r> <r id="defg" t="7/24/2012 12:16:18 AM"><d><nv n="n" v="177" /><nv n="n0" v="0" /><nv n="n1" v="5888870" /></d></r>
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