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--- ubuntu:file:delete_empty_lines [2020/07/15 09:30] – external edit 127.0.0.1
+++ ubuntu:file:delete_empty_lines [2022/06/13 10:29] (current) – removed peter
@@ Line 1: / Line 1: @@
-====== Ubuntu - File - Delete empty lines ======
-===== Using awk =====
-<code bash>
-awk 'NF' my_input > my_output
-</code>
-----
-===== Using sed =====
-Delete empty lines using sed.
-<code bash>
-sed '/^$/d' <input-file>
-echo "LINE" | sed '/^$/d'
-echo "$VAR" | sed '/^$/d'
-sed '/^[[:space:]]*$/d' input_file
-sed '/^$/d' input > output
-sed '/^\s*$/d' in > out
-sed -n '/^\s*$/!p' in.txt > out.txt
-sed '/^[[:space:]]*$/d' input > output
-</code>
-----
-===== Examples =====
-==== Delete all empty lines from a file ====
-<code bash>
-sed '/^$/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>