Mainframe, MVS and zOS Discussion

6.1 Overview This chapter describes ICETOOL, a multi-purpose DFSORT utility. ICETOOL uses the capabilities of DFSORT to perform multiple operations on one or more data sets in a single job step. These operations include the following:
Creating multiple copies of sorted, edited, or unedited input data sets
Creating output data sets containing subsets of input data sets based on various criteria for character and numeric field values or the number of times unique values occur
Creating output data sets containing different field arrangements of input data sets
Creating list data sets showing character and numeric fields in a variety of simple, tailored, and sectioned report formats, allowing control of title, date, time, page numbers, headings, lines per page, field formats, and total, maximum, minimum and average values for the columns of numeric data
Printing messages that give statistical information for selected numeric fields such as minimum, maximum, average, total, count of values, and count of unique values
Printing messages that identify invalid decimal values
Printing messages that give record counts
Setting RC=12, RC=4, or RC=0 based on record counts
Creating a list data set showing the DFSORT installation defaults in use
Creating list data sets showing unique values for selected character and numeric fields and the number of times each occurs, in a variety of simple and tailored report formats
Creating list and output data sets for records with: duplicate values, non-duplicate values, or values that occur n times, less than n times or more than n times
Creating output data sets with information spliced together from two or more input records with duplicate values. The information in the input records can originate from different data sets, helping you to perform various file "join" and "match" operations.
Using three different modes (stop, continue, and scan) to control error checking and actions after error detection for groups of operators.