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using here documments for tests in sed or grep

# tirando linhas em branco com o grep

cat <<-EOF | grep .
linha com algo


outra lnha com algo
EOF

# apagando linhas em branco com o sed
cat <<-EOF | sed '/^$/d'
asdfa


asdfa
EOF
https://snipt.net/embed/8a46c49bc82a667bc088bbe67cf155da/
/raw/8a46c49bc82a667bc088bbe67cf155da/
8a46c49bc82a667bc088bbe67cf155da
bash
Bash
16
2019-07-21T17:22:39
True
False
False
/api/public/snipt/8625/
using-here-documments-for-tests-in-sed-or-grep
<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></pre></div></td><td class="code"><div class="highlight"><pre><span></span><span id="L-1"><a name="L-1"></a><span class="c1"># tirando linhas em branco com o grep</span> </span><span id="L-2"><a name="L-2"></a> </span><span id="L-3"><a name="L-3"></a>cat <span class="s">&lt;&lt;-EOF | grep .</span> </span><span id="L-4"><a name="L-4"></a><span class="s">linha com algo</span> </span><span id="L-5"><a name="L-5"></a> </span><span id="L-6"><a name="L-6"></a> </span><span id="L-7"><a name="L-7"></a><span class="s">outra lnha com algo</span> </span><span id="L-8"><a name="L-8"></a><span class="s">EOF</span> </span><span id="L-9"><a name="L-9"></a> </span><span id="L-10"><a name="L-10"></a><span class="c1"># apagando linhas em branco com o sed</span> </span><span id="L-11"><a name="L-11"></a>cat <span class="s">&lt;&lt;-EOF | sed &#39;/^$/d&#39;</span> </span><span id="L-12"><a name="L-12"></a><span class="s">asdfa</span> </span><span id="L-13"><a name="L-13"></a> </span><span id="L-14"><a name="L-14"></a> </span><span id="L-15"><a name="L-15"></a><span class="s">asdfa</span> </span><span id="L-16"><a name="L-16"></a><span class="s">EOF</span> </span></pre></div> </td></tr></table>
bash, grep, sed