Home > Data Services > Catalog . Restricted Data . Census . ACS

Search Data Services

Meta Search
search across all the following databases:

Data Catalog
Data and documentation

Common questions and answers.

Entire collection of data resources.

Latest Data News

RSS Feed icon

Census Bureau director resigns

In the nick of time?

The title says it all

Anything you can’t measure you can’t manage

New word of the day: frugging


Purpose: This program takes a data set as input and divides it into a maximum of 99 subfiles. Its main purpose is to allow one to write out a large data set from UNIX to a multi-volume external device.

To run, enter: divide a b c d


For example, to divide up the 1990 STF3C data into four subfiles enter:

divide 3c_dat 5000 19900 16200

The result will be a file 3c_dat.01 of 5000 records, file 3c_dat.02 of 5000 records, file 3c_dat.03 of 5000 records, and file 3c_dat.04 of 1200 records.


  1. To run in the background, add an ampersand to the run statement:

    divide 3c_dat 5000 19900 16200 &

  2. If data are compressed, the data can be piped in from a decompression program. You will need to use the dividecomp version of the utility to do this.

    zcat /usr/pops/d3/stf/1990/3c/3c_dat.Z | dividecomp 5000 19900 16200 &