diff --git a/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat b/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat
index 0df3cf3dd..ee6747707 100644
--- a/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat
+++ b/xCAT-test/autotest/testcase/installation/reg_linux_diskfull_installation_flat
@@ -12,12 +12,12 @@ cmd:chdef -t node -o $$CN servicenode= monserver=$$MN nfsserver=$$MN tftpserver=
 check:rc==0
 cmd:makedns -n
 check:rc==0
-cmd:makeconservercf 
+cmd:makeconservercf
 check:rc==0
 cmd:cat /etc/conserver.cf | grep $$CN
 check:output=~$$CN
 cmd:sleep 20
-cmd:if [[ "__GETNODEATTR($$CN,arch)__" = "ppc64" ]] && [[ "__GETNODEATTR($$CN,mgt)__" != "ipmi" ]]; then getmacs -D $$CN; fi 
+cmd:if [[ "__GETNODEATTR($$CN,arch)__" = "ppc64" ]] && [[ "__GETNODEATTR($$CN,mgt)__" != "ipmi" ]]; then getmacs -D $$CN; fi
 check:rc==0
 cmd:chtab key=extntpservers site.value=""
 check:rc==0
@@ -32,7 +32,7 @@ check:rc==0
 cmd:sleep 10
 cmd:a=0;while true; do [ $a -eq 100 ] && exit 1;output=$(makedhcp -q $$CN);[ $? -ne 0 ] && exit 1;echo $output|grep $$CN 2>/dev/null && exit 0;a=$[$a+1];sleep 1;done
 check:rc==0
-cmd:copycds $$ISO 
+cmd:copycds $$ISO
 check:rc==0
 cmd:if [[ -f /test.synclist ]] ;then mv -f /test.synclist /test.synclist.bak;fi;
 cmd:echo "/test.synclist -> /test.synclist" > /test.synclist;chdef -t osimage -o __GETNODEATTR($$CN,os)__-__GETNODEATTR($$CN,arch)__-install-compute synclists=/test.synclist