diff --git a/xCAT-client/pods/man1/chdef.1.pod b/xCAT-client/pods/man1/chdef.1.pod
index e6d4308e8..402e117e0 100644
--- a/xCAT-client/pods/man1/chdef.1.pod
+++ b/xCAT-client/pods/man1/chdef.1.pod
@@ -8,7 +8,7 @@ B<chdef> [B<-h>|B<--help>] [B<-t> I<object-types>]
 
 B<chdef> [B<-V>|B<--verbose>] [B<-t> I<object-types>] [B<-o> I<object-names>]
 [B<-d>|B<--dynamic>] [B<-p>|B<--plus>] [B<-m>|B<--minus>] [B<-z>|B<--stanza>]
-[[B<-w> "I<attr>==I<val>"] [B<-w> "I<attr>=~I<val>"] ...] [I<noderange>] [I<attr>=I<val> [I<attr>=I<val...>]]
+[[B<-w> I<attr>==I<val>] [B<-w> I<attr>=~I<val>] ...] [I<noderange>] [I<attr>=I<val> [I<attr>=I<val...>]]
 
 =head1 DESCRIPTION
 
@@ -54,7 +54,7 @@ A set of comma delimited object types.  Use the help option to get a list of val
 
 Verbose mode.
 
-=item B<-w> I<"attr==val"> B<-w> I<"attr=~val"> ... 
+=item B<-w> I<attr==val> B<-w> I<attr=~val> ... 
 
 Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. Use the help option to get a list of validattributes for each object type.
 
@@ -124,7 +124,7 @@ To update a set of definitions based on information contained in the stanza file
 
 To update a dynamic node group definition to add the cons=hmc wherevals pair.
 
- chdef -t group -o dyngrp -d -p -w "cons==hmc"
+ chdef -t group -o dyngrp -d -p -w cons==hmc
 
 =back
 
diff --git a/xCAT-client/pods/man1/lsdef.1.pod b/xCAT-client/pods/man1/lsdef.1.pod
index 79304c899..2c5c4de3b 100644
--- a/xCAT-client/pods/man1/lsdef.1.pod
+++ b/xCAT-client/pods/man1/lsdef.1.pod
@@ -8,7 +8,7 @@ B<lsdef> [B<-h>|B<--help>] [B<-t> I<object-types>]
 
 B<lsdef> [B<-V>|B<--verbose>] [B<-l>|B<--long>] [B<-a>|B<--all>] [B<-t> I<object-types>]
 [B<-o> I<object-names>] [B<-z>|B<--stanza>] [B<-i> I<attr-list>]
-[[B<-w> "I<attr>==I<val>"] [B<-w> "I<attr>=~I<val>"] ...] [I<noderange>]
+[[B<-w> I<attr>==I<val>] [B<-w> I<attr>=~I<val>] ...] [I<noderange>]
 
 
 =head1 DESCRIPTION
@@ -54,11 +54,11 @@ A set of comma delimited object types. Use the help option to get a list of vali
 
 Verbose mode.
 
-=item B<-w> I<"attr==val"> B<-w> I<"attr=~val"> ...
+=item B<-w> I<attr==val> B<-w> I<attr=~val> ...
 
 Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. Use the help option to get a list of validattributes for each object type.
 
-Note: the operator !~ will be parsed by shell, if you want to use !~ in the selection string, use single quote instead. For example:-w 'mgt!~ipmi'.
+Note: if the "val" fields includes spaces or any other characters that will be parsed by shell, the "attr<operator>val" needs to be quoted. If the operator is "!~", the "attr<operator>val" needs to be quoted using single quote.
 
 =item B<-z|--stanza>
 
@@ -125,7 +125,7 @@ To list an osimage definition named "aix53J".
 
 To list all node definitions that have a status value of "booting".
 
- lsdef -t node -w "status==booting"
+ lsdef -t node -w status==booting
 
 =item 9.
 
diff --git a/xCAT-client/pods/man1/mkdef.1.pod b/xCAT-client/pods/man1/mkdef.1.pod
index c542cdf81..c205453e4 100644
--- a/xCAT-client/pods/man1/mkdef.1.pod
+++ b/xCAT-client/pods/man1/mkdef.1.pod
@@ -8,7 +8,7 @@ B<mkdef> [B<-h>|B<--help>] [B<-t> I<object-types>]
 
 B<mkdef> [B<-V>|B<--verbose>] [B<-t> I<object-types>] [B<-o> I<object-names>]
 [B<-z>|B<--stanza>] [B<-d>|B<--dynamic>] [B<-f>|B<--force>]
-[[B<-w> "I<attr>==I<val>"] [B<-w> "I<attr>=~I<val>"] ...] [I<noderange>] [I<attr>=I<val> [I<attr>=I<val...>]]
+[[B<-w> I<attr>==I<val>] [B<-w> I<attr>=~I<val>] ...] [I<noderange>] [I<attr>=I<val> [I<attr>=I<val...>]]
 
 
 =head1 DESCRIPTION
@@ -52,11 +52,11 @@ A set of comma delimited object types.  Use the help option to get a list of val
 
 Verbose mode.
 
-=item B<-w> I<"attr==val"> B<-w> I<"attr=~val"> ... 
+=item B<-w> I<attr==val> B<-w> I<attr=~val> ... 
 
 Use one or multiple -w flags to specify the selection string that can be used to select objects. The operators ==, !=, =~ and !~ are available. For mkdef commmand, the -w flag only makes sense for creating dynamic node group. Use the help option to get a list of validattributes for each object type.
 
-Note: the operator !~ will be parsed by shell, if you want to use !~ in the selection string, use single quote instead. For example:-w 'mgt!~ipmi'.
+Note: if the "val" fields includes spaces or any other characters that will be parsed by shell, the "attr<operator>val" needs to be quoted. If the operator is "!~", the "attr<operator>val" needs to be quoted using single quote.
 
 =item B<-z|--stanza>
 
@@ -124,7 +124,7 @@ To create node definitions for a set of node host names contained in the node ra
 
 To create a dynamic node group definition called HMCMgtNodes containing all the HMC managed nodes"
 
- mkdef -t group -o HMCMgtNodes -d -w "mgt==hmc" -w "cons==hmc"
+ mkdef -t group -o HMCMgtNodes -d -w mgt==hmc -w cons==hmc
 
 =item 9.