From 4e6e1f744c7838d95b6a94f1fff1a3d613adf498 Mon Sep 17 00:00:00 2001
From: Erich Eckner <git@eckner.net>
Date: Mon, 23 May 2022 21:27:59 +0200
Subject: scripts/check-keys: make runnable for other users

---
 scripts/check-keys | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/scripts/check-keys b/scripts/check-keys
index ecdbfe6..6a417fe 100755
--- a/scripts/check-keys
+++ b/scripts/check-keys
@@ -2,16 +2,26 @@
 
 cd "${0%/*}/.."
 
+if [ $# -gt 1 ]; then
+  >&2 echo 'usage: '"$0"' [user]'
+  exit 1
+fi
+
 host=$(uname -n)
 if [ ! -d "hosts/${host}" ]; then
   >&2 printf 'no keys for host %s\n' "${host}"
   exit 1
 fi
 
-user=$(whoami)
+user="${1:-$(whoami)}"
 if [ ! -f "hosts/${host}/${user}" ]; then
   >&2 printf 'no keys for user %s on host %s\n' "${user}" "${host}"
   exit 1
 fi
 
-diff -u --color "hosts/${host}/${user}" ~/.ssh/authorized_keys
+home_dir=$(
+  getent passwd "${user}" \
+  | cut -d: -f6
+)
+
+diff -u --color "hosts/${host}/${user}" "${home_dir}/.ssh/authorized_keys"
-- 
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