diff --git a/source/upgrading/upgrade/upgrade-4.10.rst b/source/upgrading/upgrade/upgrade-4.10.rst
index a0070cd36f..de1a2f5f8f 100644
--- a/source/upgrading/upgrade/upgrade-4.10.rst
+++ b/source/upgrading/upgrade/upgrade-4.10.rst
@@ -104,8 +104,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p -R cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p -R cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu410:
diff --git a/source/upgrading/upgrade/upgrade-4.11.rst b/source/upgrading/upgrade/upgrade-4.11.rst
index c3d920e6c3..da3dd27fc9 100644
--- a/source/upgrading/upgrade/upgrade-4.11.rst
+++ b/source/upgrading/upgrade/upgrade-4.11.rst
@@ -100,8 +100,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p -R cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p -R cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu411:
diff --git a/source/upgrading/upgrade/upgrade-4.12.rst b/source/upgrading/upgrade/upgrade-4.12.rst
index e66b42faf6..75c6bc80e3 100644
--- a/source/upgrading/upgrade/upgrade-4.12.rst
+++ b/source/upgrading/upgrade/upgrade-4.12.rst
@@ -98,8 +98,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p -R cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p -R cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu412:
diff --git a/source/upgrading/upgrade/upgrade-4.13.rst b/source/upgrading/upgrade/upgrade-4.13.rst
index 753afe2e57..087437569e 100644
--- a/source/upgrading/upgrade/upgrade-4.13.rst
+++ b/source/upgrading/upgrade/upgrade-4.13.rst
@@ -101,8 +101,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p -R cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p -R cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu413:
diff --git a/source/upgrading/upgrade/upgrade-4.14.rst b/source/upgrading/upgrade/upgrade-4.14.rst
index 701877ecad..7ea4ac6366 100644
--- a/source/upgrading/upgrade/upgrade-4.14.rst
+++ b/source/upgrading/upgrade/upgrade-4.14.rst
@@ -97,8 +97,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p -R cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p -R cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu414:
diff --git a/source/upgrading/upgrade/upgrade-4.15.rst b/source/upgrading/upgrade/upgrade-4.15.rst
index 277415798f..02ebdf9c22 100644
--- a/source/upgrading/upgrade/upgrade-4.15.rst
+++ b/source/upgrading/upgrade/upgrade-4.15.rst
@@ -98,8 +98,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p -R cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p -R cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu414:
diff --git a/source/upgrading/upgrade/upgrade-4.2.rst b/source/upgrading/upgrade/upgrade-4.2.rst
index 596245faef..c76993b487 100644
--- a/source/upgrading/upgrade/upgrade-4.2.rst
+++ b/source/upgrading/upgrade/upgrade-4.2.rst
@@ -84,8 +84,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu42:
diff --git a/source/upgrading/upgrade/upgrade-4.3.rst b/source/upgrading/upgrade/upgrade-4.3.rst
index 4c7e79afe1..f25cf218bb 100644
--- a/source/upgrading/upgrade/upgrade-4.3.rst
+++ b/source/upgrading/upgrade/upgrade-4.3.rst
@@ -88,8 +88,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu43:
diff --git a/source/upgrading/upgrade/upgrade-4.4.rst b/source/upgrading/upgrade/upgrade-4.4.rst
index 0be2e863b3..47f0f33cc0 100644
--- a/source/upgrading/upgrade/upgrade-4.4.rst
+++ b/source/upgrading/upgrade/upgrade-4.4.rst
@@ -88,8 +88,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu44:
diff --git a/source/upgrading/upgrade/upgrade-4.5.rst b/source/upgrading/upgrade/upgrade-4.5.rst
index da6102b15f..2feea2f59b 100644
--- a/source/upgrading/upgrade/upgrade-4.5.rst
+++ b/source/upgrading/upgrade/upgrade-4.5.rst
@@ -97,8 +97,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu45:
diff --git a/source/upgrading/upgrade/upgrade-4.6.rst b/source/upgrading/upgrade/upgrade-4.6.rst
index eca297b99d..b7f951f8e0 100644
--- a/source/upgrading/upgrade/upgrade-4.6.rst
+++ b/source/upgrading/upgrade/upgrade-4.6.rst
@@ -86,8 +86,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu46:
diff --git a/source/upgrading/upgrade/upgrade-4.7.rst b/source/upgrading/upgrade/upgrade-4.7.rst
index 6cec9d88d6..c108e4792c 100644
--- a/source/upgrading/upgrade/upgrade-4.7.rst
+++ b/source/upgrading/upgrade/upgrade-4.7.rst
@@ -85,8 +85,8 @@ Backup current database
 
    .. parsed-literal::
 
-      $ mysqldump -u root -p cloud > cloud-backup_`date '+%Y-%m-%d'`.sql
-      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_`date '+%Y-%m-%d'`.sql
+      $ mysqldump -u root -p cloud > cloud-backup_$(date +%Y-%m-%d-%H%M%S)
+      $ mysqldump -u root -p cloud_usage > cloud_usage-backup_$(date +%Y-%m-%d-%H%M%S)
 
 
 .. _ubuntu47: