add ssh key and create nextcloud user

Co-authored-by: smoorg <smoorg@tylda.org>

add_ssh_key.sh

@@ -0,0 +1,16 @@
+#!/bin/sh
+
+[ -n "$1" ] && login=$1 || read -p "provide login: " login
+[ -n "$2" ] && ssh_key=$2 || read -p "provide ssh key: " ssh_key
+
+ssh_dir=/home/$login/.ssh
+mkdir -p "$ssh_dir"
+[ ! -f "$ssh_dir/authorized_keys" ] && touch $ssh_dir/authorized_keys
+
+# add it to authorized_keys but avoid adding it twice
+ak=$ssh_dir/authorized_keys
+[ ! grep "$ssh_key" $ak ] && echo "$ssh_key" >> $ak
+
+# ssh wont work without it
+chmod -R 0700 /home/$login/.ssh
+chown -R $login:$login $ssh_dir