From d64a060ad1280f0b91b9bb518bb49bca51153846 Mon Sep 17 00:00:00 2001
From: Michele Cereda <cereda.michele@gmail.com>
Date: Thu, 12 May 2022 23:33:39 +0200
Subject: [PATCH] Added sed's notes to the knowledge base

---
 knowledge base/sed.md | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 knowledge base/sed.md

diff --git a/knowledge base/sed.md b/knowledge base/sed.md
new file mode 100644
index 0000000..1ed21fa
--- /dev/null
+++ b/knowledge base/sed.md	
@@ -0,0 +1,14 @@
+# SED
+
+## TL;DR
+
+```shell
+# Delete lines matching "OAM" from a file.
+sed -e '/OAM/d' -i .bash_history
+
+# Change fstab entries.
+sed /etc/fstab \
+  -e "s|#.*\s*/boot\s*.*|/dev/sda1  /boot  vfat   defaults             0 0|" \
+  -e "s|#.*\s*ext4\s*.*|/dev/sda2  /      btrfs  compress-force=zstd  0 0|" \
+  -e '/#.*\s*swap\s*.*/d'
+```