removing commas from numbers in CSV file <p>I have a file that has many columns and I only need two of those columns. I am getting the columns I need using </p> <pre><code>cut -f 2-3 -d, file1.csv &gt; file2.csv </code></pre> <p>The issue I am having is that the first column is ID and once it gets past <code>999</code> it becomes <code>1,000</code> and so it is treated as an extra column now. I cant get rid of all commas because I need them to separate the data. Is there a way to use <code>sed</code> to remove commas that only show up between <code>0-9</code>? </p>