Add a label indicating duplicate names [duplicate] - sed

Question

This question already has answers here:
Add double quotation on duplicated name
(4 answers)
Closed 5 years ago.
I tried to use
sed 's/ */:/' file | awk -F: '{ if (arr[$1":"$2]) print "\""$1"\":"$2; else { arr[$1":"$2]++; print $0 }}'
but cannot get ideal output. Thanks.
The following is the file information and the desired output that I want.
Text File:
Jon DeLoach:408-253-3122:123 Park St., San Jose, CA 04086:7/25/53:85100
Karen Evich:284-758-2857:23 Edgecliff Place, Lincoln, NB 92086:7/25/53:85100
Karen Evich:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
Karen Evich:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
Fred Fardbarkle:674-843-1385:20 Parak Lane, DeLuth, MN 23850:4/12/23:780900
Fred Fardbarkle:674-843-1385:20 Parak Lane, DeLuth, MN 23850:4/12/23:780900
Lori Gortz:327-832-5728:3465 Mirlo Street, Peabody, MA 34756:10/2/65:35200
Paco Gutierrez:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500
Paco Gutierrez:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500
Jesse Neal:408-233-8971:45 Rose Terrace, San Francisco, CA 92303:2/3/36:25000
Jesse Neal:408-233-8971:45 Rose Terrace, San Francisco, CA 92303:2/3/36:25000
Zippy Pinhead:834-823-8319:2356 Bizarro Ave., Farmount, IL 84357:1/1/67:89500
Required output: Add stars indicating duplicated names
Jon DeLoach:408-253-3122:123 Park St., San Jose, CA 04086:7/25/53:85100
*Karen Evich*:284-758-2857:23 Edgecliff Place, Lincoln, NB 92086:7/25/53:85100
*Karen Evich*:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
*Karen Evich*:284-758-2867:23 Edgecliff Place, Lincoln, NB 92743:11/3/35:58200
*Fred Fardbarkle*:674-843-1385:20 Parak Lane, DeLuth, MN 23850:4/12/23:780900
*Fred Fardbarkle*:674-843-1385:20 Parak Lane, DeLuth, MN 23850:4/12/23:780900
Lori Gortz:327-832-5728:3465 Mirlo Street, Peabody, MA 34756:10/2/65:35200
*Paco Gutierrez*:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500
*Paco Gutierrez*:835-365-1284:454 Easy Street, Decatur, IL 75732:2/28/53:123500
*Jesse Neal*:408-233-8971:45 Rose Terrace, San Francisco, CA 92303:2/3/36:25000
*Jesse Neal*:408-233-8971:45 Rose Terrace, San Francisco, CA 92303:2/3/36:25000
Zippy Pinhead:834-823-8319:2356 Bizarro Ave., Farmount, IL 84357:1/1/67:89500

Answer 1

Give a test to this. Seems to work ok.
$ awk -F":" 'NR==FNR{a[$1]++;next}(a[$1]>1){sub($1,"*" $1 "*")}1' file1 file1
Explanation:
This code reads the same file twice. This maybe has a performance penalty depending on the filesize.
-F":" : Global Input Fields Delimiter is defined as :
NR==FNR{a[$1]++;next} : The code in { } is executed when NR==FNR = the first file is read by awk
a[$1]++ : Creates an array a with index $1 and value ++ => +1 for each $1 found. So for record 1 we have a[Jon DeLoach]=1. For Record2 a[Karen Evich]=1, for record 3 a[Karen Evich]++ => 2,etc
next : instructs awk to go to the next record and skip the rest script.
(a[$1]>1){sub($1,"*" $1 "*")}1 : This condition & action is performed on the second file. For each a[$1] found in second file with a value >1 (as has been finalized when the first file finished), we insert * around $1 using awk sub function. sub function applies substitution directly to $0 = Whole record.
1 : prints the whole record of the second file.