From 6c5ea52c687ee02315566fdd1f4732eebf6e0d0c Mon Sep 17 00:00:00 2001
From: Asif Bacchus <asif@linuxprogramming.mshome.net>
Date: Thu, 23 May 2019 21:43:12 -0600
Subject: [PATCH] check for bad seafile sys username

---
 backup_new.sh | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/backup_new.sh b/backup_new.sh
index 003e7f0..c7782f6 100755
--- a/backup_new.sh
+++ b/backup_new.sh
@@ -172,8 +172,12 @@ while [ $# -gt 0 ]; do
         -u|--user|--seafuser)
             # name of seafile system user
             if [ -n "$2" ]; then
-                seafUser="${2%/}"
-                shift
+                if ! id "$2" > /dev/null 2>&1; then
+                    badParam user "$@"
+                else
+                    seafUser="${2%/}"
+                    shift
+                fi
             else
                 badParam empty "$@"
             fi