11-12-2007
hey DRL thanks a ton!! for your help ..
but again as per the requirement of boss it has to be done using Unix shell script ( plsql if required)
the files
file1 and file2 won't necessarily have the same number of rows .
file1 and file2 have column values of a specific oracle table exported and stored in Unix system
on regular basis .
the idea is two compare the contents of the files of previous day and current day ( for e.g file1 is previous day's file and file2 is current day's file) i.e. we got to do row wise comparison of file and detect if there is change in any particular row value if any particular row in file2 (say for e.g row number 3 ) differs from row number 3 of file1 ... then the script should pick up the row num 3 value from
file 2 and re-direct it to another third file.
but since we got to verify previous day's and current day's records .. so even if both the files do not have same number of lines ... it won't be a problem as our target is to compare whether a particular row which had some value until yesterday still has the same value today or has it been changed..
in such case the script can compare until it reaches the row end of file1 .
hope i m clear with my question
Last edited by Dana Evans; 11-12-2007 at 11:54 PM..
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LEARN ABOUT DEBIAN
combine
COMBINE(1) COMBINE(1)
NAME
combine - combine sets of lines from two files using boolean operations
SYNOPSIS
combine file1 and file2
combine file1 not file2
combine file1 or file2
combine file1 xor file2
_ file1 and file2 _
_ file1 not file2 _
_ file1 or file2 _
_ file1 xor file2 _
DESCRIPTION
combine combines the lines in two files. Depending on the boolean operation specified, the contents will be combined in different ways:
and Outputs lines that are in file1 if they are also present in file2.
not Outputs lines that are in file1 but not in file2.
or Outputs lines that are in file1 or file2.
xor Outputs lines that are in either file1 or file2, but not in both files.
"-" can be specified for either file to read stdin for that file.
The input files need not be sorted, and the lines are output in the order they occur in file1 (followed by the order they occur in file2
for the two "or" operations). Bear in mind that this means that the operations are not commutative; "a and b" will not necessarily be the
same as "b and a". To obtain commutative behavior sort and uniq the result.
Note that this program can be installed as "_" to allow for the syntactic sugar shown in the latter half of the synopsis (similar to the
test/[ command). It is not currently installed as "_" by default, but you can alias it to that if you like.
SEE ALSO
join(1)
AUTHOR
Copyright 2006 by Joey Hess <joey@kitenet.net>
Licensed under the GNU GPL.
moreutils 2012-04-09 COMBINE(1)