From 3a1bb75771e0ee1aa4d3adb7bb64714fce8d3151 Mon Sep 17 00:00:00 2001
From: ville rantanen <ville.rantanen@iki.fi>
Date: Wed, 2 Aug 2017 12:16:02 +0300
Subject: [PATCH] ssh fingerprint remover

---
 bin/ssh-remove-known-host |  1 +
 web/ssh-remove-known-host | 32 ++++++++++++++++++++++++++++++++
 2 files changed, 33 insertions(+)
 create mode 120000 bin/ssh-remove-known-host
 create mode 100755 web/ssh-remove-known-host

diff --git a/bin/ssh-remove-known-host b/bin/ssh-remove-known-host
new file mode 120000
index 0000000..3f8d2f5
--- /dev/null
+++ b/bin/ssh-remove-known-host
@@ -0,0 +1 @@
+../web/ssh-remove-known-host
\ No newline at end of file
diff --git a/web/ssh-remove-known-host b/web/ssh-remove-known-host
new file mode 100755
index 0000000..723f7e4
--- /dev/null
+++ b/web/ssh-remove-known-host
@@ -0,0 +1,32 @@
+#!/bin/bash
+
+function helpexit() {
+    echo "Remove hosts from ~/.ssh/known_hosts"
+    echo "-f  no questions."
+    exit
+}
+
+for (( i=1; i<=$#; i++ )); do
+  [[ "${!i}" = "--help" ]] && helpexit                                            
+  [[ "${!i}" = "-h" ]] && helpexit                                            
+  [[ "${!i}" = "-f" ]] && { FORCE=1; continue; }
+  HOST="${!i}"
+done
+[[ -z "$HOST" ]] && helpexit
+
+HOST=$( ssh -G "$HOST" | awk '/^hostname / { print $2 }' )
+IP=$( getent hosts "$HOST" | awk '{ print $1 }' )
+
+[[ "$FORCE" -ne 1 ]] && {
+  echo "Sure to remove $HOST (IP: $IP) from known_hosts? [y/N]"
+  read resp
+} || {
+  resp=y
+}
+
+[[ "$resp" = "y" ]] && {
+  set -x
+  ssh-keygen -R "$HOST"
+  ssh-keygen -R "$IP"
+}
+