add script to remove localhost fingerprints

i use few vms and they are populating `known_hosts` file with their
fingerprints, and when i launch any other vm, ssh insults me that
fingerprint is wrong and bla bla bla. so, just a little bodge.

1 files changed, 17 insertions, 0 deletions

diff --git a/bin/.local/bin/clean_local_ssh b/bin/.local/bin/clean_local_ssh
new file mode 100644
index 0000000..54b67a9
--- /dev/null
+++ b/bin/.local/bin/clean_local_ssh
@@ -0,0 +1,17 @@
+#!/bin/sh -e
+
+_known_hosts="$HOME/.ssh/known_hosts"
+
+grep localhost "$_known_hosts"
+
+printf "remove these entries? [y/N] "
+read -r REMOVE
+case "$REMOVE" in
+    [Y|y])
+        grep -v localhost "$_known_hosts" | tee "$_known_hosts.new"
+        mv "$_known_hosts.new" "$_known_hosts"
+        ;;
+    *)
+        exit 1
+        ;;
+esac