Vmerge Version 1.3.2

Re-integrates modified data into a larger dataset. If you extract data, and then modify the extracted data, Vmerge can be used to apply those modifications back to the original data (on a per-table basis).

Usage: Vmerge tgt-spec src-spec Both source-spec and target-spec should be of the form path/table.field-spec

where path can be:

relative, like tes/mapping/data or
absolute, like /tes/mapping/data or
path/ part can be omitted, if the files are in the current directory.

and field-spec can be:

bit-string:bit-field
any atomic-field (including byte-offset fields)
array-field
array-field[index]
array-field[lo_index-hi_index]
var-array[]
Or a combination of the above, separated by commas and enclosed in {}. There must be a one-to-one correspondence between source specs and target specs: you can't map two atomic fields onto an array field with two elements, nor vice-versa.

Notes:

The characters "[]{}" can be used in arguments to this program. Many UNIX shells interpret these characters specially, thus they must be escaped from the shell. This is most conveniently accomplished by using quotes, as show in the examples below.
Doesn't allow you to add or delete records, only modifies existing data.
Handles all atomic field types, as well as fixed- or variable-length arrays, but won't perform conversions between fixed and variable-length arrays.
When dealing with variable-length arrays, won't handle parts of an array at a time, only entire arrays.

Examples:

Vmerge "new_data/rad.cal_rad[]" "old_data/rad.cal_rad[]"
Vmerge "new_data/obs.{temps[1-2],vbol_gain}" "old_data/obs.{temps[3-4],tbol_gain}"