====== SED - Delete - Delete blank lines ======

Same as "grep '.' "

<code bash>
sed '/^$/d'                           # method 1
sed '/./!d'                           # method 2
</code>

----

===== Example =====

Running that command again this file:

<file bash testfile>
aaa

bbb
ccc
</file>

returns:

<file bash testfile>
aaa
bbb
ccc
</file>

----

===== Example =====

<code bash>
cat input.txt | sed '/^$/d' > output.txt
</code>