Compare two files and find match and print the header of the second file
Hi,
I have two input files; file1 and file2. I compare them based on matched values in 1 column and print selected columns of the second file (file2). I got the result but the header was not printed. i want the header of file2 to be printed together with the result. Then i did below codes:-
but it gives me the headers for all columns, whereas i just want the header for the selected columns only. Any help is so appreciated. Thanks
Hello,
I am strugling from quite a some time to compare flat files with over 1 million records could anyone please help me.
I want to compare two pipe delimited flat files, file1 with file2 and output the unmatched rows from file2 in file3
Sample File1:
... (9 Replies)
Hello I am a new unix user, and I have a work related task to compare 2 files and print all of the lines in file 2 that contain a string from file 1 Note: the fields are in different columns in the files. I suspect the is a good use for awk? Thanks for your time & help
File 1
123 232 W343... (6 Replies)
Hello. I have two files. FILE1 was extracted from FILE2 and modified thanks to help from this post. Now I need to replace the extracted, modified lines into the original file (FILE2) to produce the FILE3.
FILE1
1466 55.27433 14.72050 -2.52E+03 3.00E-01 1.05E+04 2.57E+04
1467 55.27433... (1 Reply)
Hi,
I want to compare two columns from file1 with another two column of file2 and print matched and unmatched column like this
File1
1 rs1 abc
3 rs4 xyz
1 rs3 stu
File2
1 kkk rs1 AA 10
1 aaa rs2 DD 20
1 ccc ... (2 Replies)
Hello,
I have to fish out some specific columns from a file based on the header value. I have the list of columns I need in a different file. I thought I could read in the list of headers I need,
# file with header names of required columns in required order
headers_file=$2
# read contents... (11 Replies)
I have two files and desire to use the strings from $1 of file 1 (file1.txt) as search criteria to find matches in $2 of file 2 (file2.txt). If matches are found I want to output the entire line of file 2 (file2.txt) followed by fields $2-$11 of file 1 (file1.txt). I can find the matches, I cannot... (7 Replies)
I've written an awk script to compare two fields in two different files and then print portions of each file on the same line when matched. It works reasonably well, but every now and again, I notice some errors and cannot seem to figure out what the issue may be and am turning to you for help.
... (2 Replies)
hi
I have 2 file with more than 10 columns for both
1st file
apple,0,0,0......
orange,1,2,3.....
mango,2,4,5.....
2nd file
apple,2,3,4,5,6,7...
orange,2,3,4,5,6,8...
watermerlon,2,3,4,5,6,abc...
mango,5,6,7,4,6,def.... (1 Reply)
I've been struggling with this one for quite a while and cannot seem to find a solution for this find/replace scenario. Perhaps I'm getting rusty.
I have a file that contains a number of metrics (exactly 3 fields per line) from a few appliances that are collected in parallel. To identify the... (3 Replies)
Discussion started by: verdepollo
3 Replies
LEARN ABOUT HPUX
comm
comm(1) General Commands Manual comm(1)NAME
comm - select or reject lines common to two sorted files
SYNOPSIS
file1 file2
DESCRIPTION
comm reads file1 and file2, which should be ordered in increasing collating sequence (see sort(1) and Environment Variables below), and
produces a three-column output:
Column 1: Lines that appear only in file1,
Column 2: Lines that appear only in file2,
Column 3: Lines that appear in both files.
If is used for file1 or file2, the standard input is used.
Options 1, 2, or 3 suppress printing of the corresponding column. Thus prints only the lines common to the two files; prints only lines in
the first file but not in the second; does nothing useful.
EXTERNAL INFLUENCES
Environment Variables
determines the collating sequence expects from the input files.
determines the language in which messages are displayed.
If is not specified in the environment or is set to the empty string, the value of determines the language in which messages are displayed.
If is not specified in the environment or is set to the empty string, the value of is used as a default. If is not specified or is set to
the empty string, a default of ``C'' (see lang(5)) is used instead of If any internationalization variable contains an invalid setting,
behaves as if all internationalization variables are set to ``C''. See environ(5).
International Code Set Support
Single- and multi-byte character code sets are supported.
EXAMPLES
The following examples assume that and have been ordered in the collating sequence defined by the or environment variable.
Print all lines common to and (in other words, print column 3):
Print all lines that appear in but not in (in other words, print column 1):
Print all lines that appear in but not in (in other words, print column 2):
SEE ALSO cmp(1), diff(1), sdiff(1), sort(1), uniq(1).
STANDARDS CONFORMANCE comm(1)