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Top Forums UNIX for Advanced & Expert Users Compare two files using awk or sed, add values in a column if their previous fields are same Post 302369235 by yerruhari on Saturday 7th of November 2009 02:39:05 AM
Old 11-07-2009
Compare two files using awk or sed, add values in a column if their previous fields are same

Hi All,

I have two files

file1:

abc,def,ghi,5,jkl,mno
pqr,stu,ghi,10,vwx,xyz
cba,ust,ihg,4,cdu,oqw

file2:

ravi,def,kishore
ramu,ust,krishna
joseph,stu,mike

I need two output files as follows

In my above example, each row in file1 has 6 fields and each row in file2 has 3 fields. I should compare field2 in both the files. If field2 is same in both the files then i should get the third field in file2 as the last field in file1.

output:

abc,def,ghi,5,jkl,mno,kishore
pqr,stu,ghi,10,vwx,xyz,mike
cba,ust,ihg,4,cdu,oqw,krishna


Also, If field3 in file1 is same as field3 in the next line then the field4 should add upto field4 in the next line and i should get a unique output as follows

ouput:

abc,def,ghi,15,jkl,mno
cba,ust,ihg,4,cdu,oqw


can somebody please help me with this as i require it pretty urgently. I am using sun solaris. If we can get the output using sed or awk that would be great. Any other way is also appreciated.

Thanks in advance..........
 

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sdiff(1)						      General Commands Manual							  sdiff(1)

NAME
sdiff - side-by-side difference program SYNOPSIS
[options ...] file1 file2 DESCRIPTION
uses the output of diff(1) with the option, which ignores trailing blanks (spaces and tabs) and treats other strings of blanks as equal, to produce a side-by-side listing of two files, indicating those lines that are different. Each line of the two files is printed with a blank gutter between them if the lines are identical, a in the gutter if the line only exists in file1, a in the gutter if the line only exists in file2, and a for lines that are different. For example: abc | xyz abc abc bca < cba < dcb dcb > cde Options recognizes the following options: Use the next argument, n, as the width of the output line. The maximum value of n is 2048 (LINE_MAX). The default line length is 130 charac- ters. Only print on the left side when lines are identical. Do not print identical lines. Use the next argument, output, as the name of a third file that is created as a user-controlled merging of file1 and file2. Identical lines of file1 and file2 are copied to output. Sets of differences, as produced by diff(1), are printed; where a set of differ- ences share a common gutter character. After printing each set of differences, prompts the user with a and waits for one of the following user-typed commands: append the left column to the output file append the right column to the output file turn on silent mode; do not print identical lines turn off silent mode call the editor with the left column call the editor with the right column call the editor with the concatenation of left and right call the editor with a zero length file exit from the program On exit from the editor, the resulting file is concatenated on the end of the output file. EXAMPLES
Print a side-by-side diff of two versions of a file on a printer capable of printing 132 columns: Retrieve the most recently checked in version of a file from RCS and compare it with the version currently checked out: SEE ALSO
diff(1), ed(1). sdiff(1)

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