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    <p>If you need these...</p> <h2>Features</h2> <ul> <li>Single line and inline comments; </li> <li>Trimming spaces around <code>=</code> (ie <code>var = value</code> will not fail);</li> <li>Quoted string values;</li> <li>Understanding of DOS line endings;</li> <li>Keep safe, avoiding sourcing your config file.</li> </ul> <h2>Code</h2> <pre><code>shopt -s extglob configfile="dos_or_unix" # set the actual path name of your (DOS or Unix) config file tr -d '\r' &lt; $configfile &gt; $configfile.unix while IFS='= ' read -r lhs rhs do if [[ ! $lhs =~ ^\ *# &amp;&amp; -n $lhs ]]; then rhs="${rhs%%\#*}" # Del in line right comments rhs="${rhs%%*( )}" # Del trailing spaces rhs="${rhs%\"*}" # Del opening string quotes rhs="${rhs#\"*}" # Del closing string quotes declare $lhs="$rhs" fi done &lt; $configfile.unix </code></pre> <h2>Comments</h2> <p><code>tr -d '\r' ...</code> deletes DOS carriage return.<br> <code>! $lhs =~ ^\ *#</code> skips single line comments and <code>-n $lhs</code> skips empty lines.<br> Deleting trailing spaces with <code>${rhs%%*( )}</code> requires setting extended globbing with <code>shopt -s extglob</code>. (Apart using <code>sed</code>), you can avoid this, via the more complex: </p> <pre><code>rhs="${rhs%"${rhs##*[^ ]}"}" </code></pre> <h2>Test config file</h2> <pre class="lang-none prettyprint-override"><code>## This is a comment var1=value1 # Right side comment var2 = value2 # Assignment with spaces ## You can use blank lines var3= Unquoted String # Outer spaces trimmed var4= "My name is " # Quote to avoid trimming var5= "\"Bob\"" </code></pre> <h2>Test code</h2> <pre><code>echo "Content of var1 is $var1" echo "Content of var2 is $var2" echo "Content of var3 is [$var3]" echo "Content of var4 + var5 is: [$var4$var5]" </code></pre> <h2>Results</h2> <pre class="lang-none prettyprint-override"><code>Content of var1 is value1 Content of var2 is value2 Content of var3 is [Unquoted String] Content of var4 + var5 is: [My name is "Bob"] </code></pre>
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