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--- ubuntu:file:delete_empty_lines [2019/12/15 21:06] – peter
+++ ubuntu:file:delete_empty_lines [2022/06/13 10:29] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Ubuntu - File - Delete empty lines ======
-Delete empty lines using sed.
-<code bash>
-sed '/^$/d' <input-file>
-echo "LINE" | sed '/^$/d'
-echo "$VAR" | sed '/^$/d'
-sed '/^[[:space:]]*$/d' input_file
-</code>
-----
-===== Examples =====
-==== Delete all empty lines from a file ====
-<code bash>
-sed '/^$/d' /tmp/data.txt
-</code>
-----
-==== Store output to another file use redirection operator ====
-<code bash>
-sed '/^$/d' /tmp/data.txt > /tmp/output.txt
-</code>
-----
-==== Update the file directly ====
-<code bash>
-sed -i '/^$/d' /tmp/data.txt
-</code>