How do I compare the directories of two PDS(E)s?

I wanted to compare  two directories to find the differences.   I could see that the number of members was different, but it was hard to see what was missing.

I browsed the web, and found that this was a commonly asked question, and often the solution was to write some Rexx and use the ISPF LM* functions.  I felt this was the wrong way.  

I had used Superc to compare members of different files – could it tell me same information about the member list – yes!

SuperC has different compare types

1. File –  Compares source data sets for differences, but does not show what
   the differences are.
2. Line – Compares source data sets for line differences.  It is record-oriented and points out inserted or deleted lines.
3. Word – Compares source data sets for word differences.  If two data sets contain the same words in the same order, SuperC considers them to be identical, even if those words are not
   on the same lines.
4. Byte – Compares source data sets for byte differences.  This compare type is most useful for comparing  machine readable data.

Example output of the File comparison type.

NEW: COLIN.ZZZ.PROCLIB  OLD: HLQ.Y.ABCNPARU                                                                                     
MEMBER SUMMARY LISTING (FILE COMPARE)                                                                                     
DIFF SAME MEMBERS   N-BYTES O-BYTES N-LINES O-LINES  HASH1 HASH2 
                                                                                     
 **       ABC11111   171120  173200    2139    2165  78D5C 1113D
      **  ABC9999       640     640       8       8  AB58A AB58A 
     

We can see

• ABC1111 is different because the “**” in the DIFF column, and the hash code at the right is different
• ABC9999 is the same in each because the “**” is in the SAME column, and the hash value is the same

You also get a summary of differences

   10   TOTAL MEMBER(S) PROCESSED AS A PDS 
    1   TOTAL MEMBER(S) PROCESSED HAD CHANGES 
    9   TOTAL MEMBER(S) PROCESSED HAD NO CHANGES 
    9   TOTAL NEW FILE MEMBER(S) NOT PAIRED 
  179   TOTAL OLD FILE MEMBER(S) NOT PAIRED 

List of members not in both

MEMBER SUMMARY LISTING (FILE COMPARE)                                 
NON-PAIRED NEW FILE MEMBERS | NON-PAIRED OLD FILE MEMBERS               
     ABC$$$$$               |       ZAA$$$$ 
     ABCSCLRR               |       ZYZAPST5 
                            |       ZYZAPST6

• Member ABC$$$$ and one other are in the “new” PDS, but not in the “old” PDS.
• Member ZAA$$$$ and 2 others are in “old” PDS, but not in the “new” PDS.

Like most things – easy – once you know how do to it!

Using Line mode

When I used line mode I got output like

                                                  N-LN# O-LN# 
I - SYSNAME                      &SYSNAME.        00004 00003
D - SYSNAME                      S0W1 

For one member, the  “new-file” at line 4 was similar to the line in the “old-file” at line 3.

To get from the old file to the new file, delete the line with S0W1 in it and insert the line with &SYSNAME.