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Extract files from tar / tar.gz using pattern matching

#!/bin/bash

testZ="-z"

case $# in

2) if [ $1 == $testZ ]; then
       echo; echo "Usage: `basename $0` [-z] tar-filename filename-pattern"; echo; exit $E_BADARGS
   else
       tar -xvf $1 `tar -tf $1 | grep $2`
   fi
   ;;

3) if [ $1 == $testZ ]; then
       gunzip -c $2 | tar -xvf - `gunzip -c $2 | tar -tf - | grep $3`
   else
       echo; echo "Usage: `basename $0` [-z] tar-filename "; echo; exit $E_BADARGS
   fi
   ;;

*) echo; echo "Usage: `basename $0` [-z] tar-filename filename-pattern"; echo; exit $E_BADARGS;;
esac
https://snipt.net/embed/352c502575be35b772d1937d086843c3/
/raw/352c502575be35b772d1937d086843c3/
352c502575be35b772d1937d086843c3
bash
Bash
23
2019-05-24T17:23:19
True
False
False
/api/public/snipt/3970/
extract-files-from-tar-targz-using-pattern-matching
<table class="highlighttable"><tr><td class="linenos"><div class="linenodiv"><pre><a href="#L-1"> 1</a> <a href="#L-2"> 2</a> <a href="#L-3"> 3</a> <a href="#L-4"> 4</a> <a href="#L-5"> 5</a> <a href="#L-6"> 6</a> <a href="#L-7"> 7</a> <a href="#L-8"> 8</a> <a href="#L-9"> 9</a> <a href="#L-10">10</a> <a href="#L-11">11</a> <a href="#L-12">12</a> <a href="#L-13">13</a> <a href="#L-14">14</a> <a href="#L-15">15</a> <a href="#L-16">16</a> <a href="#L-17">17</a> <a href="#L-18">18</a> <a href="#L-19">19</a> <a href="#L-20">20</a> <a href="#L-21">21</a> <a href="#L-22">22</a></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="ch">#!/bin/bash</span> </span><span id="L-2"><a name="L-2"></a> </span><span id="L-3"><a name="L-3"></a><span class="nv">testZ</span><span class="o">=</span><span class="s2">&quot;-z&quot;</span> </span><span id="L-4"><a name="L-4"></a> </span><span id="L-5"><a name="L-5"></a><span class="k">case</span> <span class="nv">$#</span> in </span><span id="L-6"><a name="L-6"></a> </span><span id="L-7"><a name="L-7"></a>2<span class="o">)</span> <span class="k">if</span> <span class="o">[</span> <span class="nv">$1</span> <span class="o">==</span> <span class="nv">$testZ</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span> </span><span id="L-8"><a name="L-8"></a> echo<span class="p">;</span> <span class="nb">echo</span> <span class="s2">&quot;Usage: `basename </span><span class="nv">$0</span><span class="s2">` [-z] tar-filename filename-pattern&quot;</span><span class="p">;</span> echo<span class="p">;</span> <span class="nb">exit</span> <span class="nv">$E_BADARGS</span> </span><span id="L-9"><a name="L-9"></a> <span class="k">else</span> </span><span id="L-10"><a name="L-10"></a> tar -xvf <span class="nv">$1</span> <span class="sb">`</span>tar -tf <span class="nv">$1</span> <span class="p">|</span> grep <span class="nv">$2</span><span class="sb">`</span> </span><span id="L-11"><a name="L-11"></a> <span class="k">fi</span> </span><span id="L-12"><a name="L-12"></a> <span class="p">;;</span> </span><span id="L-13"><a name="L-13"></a> </span><span id="L-14"><a name="L-14"></a>3<span class="o">)</span> <span class="k">if</span> <span class="o">[</span> <span class="nv">$1</span> <span class="o">==</span> <span class="nv">$testZ</span> <span class="o">]</span><span class="p">;</span> <span class="k">then</span> </span><span id="L-15"><a name="L-15"></a> gunzip -c <span class="nv">$2</span> <span class="p">|</span> tar -xvf - <span class="sb">`</span>gunzip -c <span class="nv">$2</span> <span class="p">|</span> tar -tf - <span class="p">|</span> grep <span class="nv">$3</span><span class="sb">`</span> </span><span id="L-16"><a name="L-16"></a> <span class="k">else</span> </span><span id="L-17"><a name="L-17"></a> echo<span class="p">;</span> <span class="nb">echo</span> <span class="s2">&quot;Usage: `basename </span><span class="nv">$0</span><span class="s2">` [-z] tar-filename &quot;</span><span class="p">;</span> echo<span class="p">;</span> <span class="nb">exit</span> <span class="nv">$E_BADARGS</span> </span><span id="L-18"><a name="L-18"></a> <span class="k">fi</span> </span><span id="L-19"><a name="L-19"></a> <span class="p">;;</span> </span><span id="L-20"><a name="L-20"></a> </span><span id="L-21"><a name="L-21"></a>*<span class="o">)</span> echo<span class="p">;</span> <span class="nb">echo</span> <span class="s2">&quot;Usage: `basename </span><span class="nv">$0</span><span class="s2">` [-z] tar-filename filename-pattern&quot;</span><span class="p">;</span> echo<span class="p">;</span> <span class="nb">exit</span> <span class="nv">$E_BADARGS</span><span class="p">;;</span> </span><span id="L-22"><a name="L-22"></a><span class="k">esac</span> </span></pre></div> </td></tr></table>
bash, tar