AWK with if-else loop example

Bash script with AWK example - in this example, if the line contains one type of keywords, I wanted to add something in the end of same line and if the line contained something else, I wanted to add some other text.

cat /tmp/file1 |  \
 awk '{ 
  if ($0~"RHEL" || $0~"rhel" || $0~"CENT" || $0~"cent") 
            print $0 " --os-family \"Redhat\""
  if ($0~"Ubuntu" || $0~"UBUN" || $0~"ubun")
            print $0 " --os-family \"Debian\""
 };' > /tmp/file2