lessons/bash/ex6.html

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.markdown-body .admonition:before,
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.markdown-body .question {
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.markdown-body .progress-80plus .progress-bar {
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.markdown-body .progress-60plus .progress-bar {
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.markdown-body .progress-40plus .progress-bar {
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.markdown-body .candystripe-animate .progress-bar{
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@-webkit-keyframes animate-stripes {
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  100% {
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@-moz-keyframes animate-stripes {
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.headeranchor:before {
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.markdown-body .task-list-item {
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.markdown-body .task-list-item input {
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@media only screen and (min-width: 768px) {
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@media print {
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  .markdown-body tr,
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</style><title>ex6</title></head><body><article class="markdown-body"><h1 id="exercises-part-6"><a name="user-content-exercises-part-6" href="#exercises-part-6" class="headeranchor-link" aria-hidden="true"><span class="headeranchor"></span></a>Exercises. Part 6</h1>
<ul>
<li>Write a short explanatory comment for the following shell script:</li>
</ul>
<pre><code>$ find . -name '*.dat' -print | wc -l | sort -n
</code></pre>

<ul>
<li>The <code>-v</code> flag to grep inverts pattern matching, so that only lines which<br />
<em>do not</em> match the pattern are printed.  Given that, which of the following<br />
    commands will find all files in <code>data/chem/pdb</code> whose names end in <code>ose.dat</code><br />
    (<em>e.g.</em>, <code>sucrose.dat</code> or <code>maltose.dat</code>), but do not contain the string <code>temp</code>?</li>
</ul>
<pre><code>1. $ find data/chem/pdb -name '*.pdb' -print | grep ose | grep -v temp
2. $ find data/chem/pdb -name ose.pdb -print | grep -v temp
3. $ grep -v temp $(find data/chem/pdb -name '*ose.pdb' -print)
4. None of the above.
</code></pre></article></body></html>