Replace echo -e and echo -n with printf for macOS compatibility (#2759)

* Replace echo with printf for hostname processing in DNS configuration

Signed-off-by: Sophie Shen <syc_libra@live.cn>

* use printf  for print_usage function

Signed-off-by: Sophie Shen <syc_libra@live.cn>

---------

Signed-off-by: Sophie Shen <syc_libra@live.cn>

Author: YCShen1010

checker_tool/check_cpfs.sh

@@ -83,15 +83,15 @@ function print_usage() {
     echo "Usage: ${script_name} [OPTIONS]..."
     echo ""
     echo "Accepted cli arguments are:"
-    echo -e "\t[--help|-h], prints this help."
-    echo -e "\t[--all|-a], all cases will be ran."
-    echo -e "\t[--groups|-g <groups>], the case groups should be like --groups='group1,group2'."
-    echo -e "\t[--groups|-g -l], list the current supported groups."
-    echo -e "\t[--ignore-groups|-ng <groups>], skip the cases groups, like -ng group1,group2."
-    echo -e "\t[--cases|-c <cases>], the cases should be like --cases='case1,case2'."
-    echo -e "\t[--cases|-c -l], list the current supported cases."
-    echo -e "\t[--ignore-cases|-nc <cases>], skip the cases groups, like -nc case1,case2."
-    echo -e "\t[--output-file|-f <string>], name to use for the output file. Default name is 'results.json'"
+    printf '%b\n' "\t[--help|-h], prints this help."
+    printf '%b\n' "\t[--all|-a], all cases will be ran."
+    printf '%b\n' "\t[--groups|-g <groups>], the case groups should be like --groups='group1,group2'."
+    printf '%b\n' "\t[--groups|-g -l], list the current supported groups."
+    printf '%b\n' "\t[--ignore-groups|-ng <groups>], skip the cases groups, like -ng group1,group2."
+    printf '%b\n' "\t[--cases|-c <cases>], the cases should be like --cases='case1,case2'."
+    printf '%b\n' "\t[--cases|-c -l], list the current supported cases."
+    printf '%b\n' "\t[--ignore-cases|-nc <cases>], skip the cases groups, like -nc case1,case2."
+    printf '%b\n' "\t[--output-file|-f <string>], name to use for the output file. Default name is 'results.json'"
     echo ""
 }
 

preload_data.sh

@@ -522,7 +522,7 @@ data:
 
     [alt_names]
 
-    DNS.1 = \$(echo -n "\$my_hostname" | sed s/-[0-9]*\$//)
+    DNS.1 = \$(printf '%s' "\$my_hostname" | sed s/-[0-9]*\$//)
 
     DNS.2 = \$my_hostname
 
@@ -1536,7 +1536,7 @@ data:
 
     [alt_names]
 
-    DNS.1 = \$(echo -n "\$my_hostname" | sed s/-[0-9]*\$//)
+    DNS.1 = \$(printf '%s' "\$my_hostname" | sed s/-[0-9]*\$//)
 
     DNS.2 = \$my_hostname