I have been trying to get a one liner for a match and merge operation, but having difficulties as I'm an awk newb. I always get stuck on the match and merge with 2 files.
I have 2 files as follows:
File 1:
File 2: (field separator is ":" in this file)
So field 8 in file1 is matched with field 1 in file2.
If there is a match, then field 2 from file2 is appended to the end of the row in file 1.
So that the output looks like this:
If someone could provide a breakdown of the awk statement solution, this would also be very helpful for next time!
Thanks!
Last edited by landossa; 11-07-2013 at 09:00 PM..
Reason: Fix errata
Hi Guys,
I wonder whether is possible to merge two files using awk. I have two files one with 7 columns and another one with 9 columns and the first column on both files is identical so will be my key to merge the files. Any ideas.Thanks in advance.
Harby. (2 Replies)
hi,
i am facing a problem in merging two files using awk,
the problem is as stated below,
file1:
A|B|C|D|E|F|G|H|I|1
M|N|O|P|Q|R|S|T|U|2
AA|BB|CC|DD|EE|FF|GG|HH|II|1
....
....
....
file2 :
1|Mn|op|qr (2 Replies)
Hi, guys. I have one question:
I have two files: passwd and shadow (the number of records in these files are not equal)the contents of them are below:
passwd:
**************
ftp:x:24:24:
sshd:x:71:65:
uucp:x:10:14:
brownj:x:5005:1000:
sherrys: x :5006:1000:
...
*************
... (2 Replies)
I have 2 files pipe delimted and want to merge them based on a key
e.g file 1
123$aaa$yyy$zzz
345$xab$yzy$zyz
456$sss$ttt$foo
799$aaa$ggg$dee
file 2
123$hhh
345$ddd
456$xxx
888$zzz
so if the key is the first field, and the result should be the common key between file 1 and 2 (6 Replies)
I want to merge data from 2nd file to 1st file based on 1st column
File1
====
data1,12,comp1
data1,13,comp2
data3,14,,
File2
====
data1,11,host1,lit
data2,11,host2,lit3
data3,11,host3,lit4
Required Ouput (5 Replies)
Hello, hopefully this is an easy on for the AWK guru's out there. I'm having some trouble figuring out how to match+merge data in 2 files into 1 single report.
I've got my 2 files filtered and delimited, just need to MATCH $3 in file1 to $1 in file2, then put $0 from File1 and $2+$3 from File2... (6 Replies)
I have two file like follows. I want to merge them according the first field of file1. The separator of file1 is tab, while the second one is ",". I tried some code, but can't get the results.
File1:
AABB 6072 28 5922
BBCC 316 147 162
CCDD 907 71 231
File2:
CCDD,hTRBV12-4,hTRBJ2-3,319895... (7 Replies)
I have two csv files : say a.csv, b.csv
a.csv looks like this :
property1,property2,100
property3,property4,200
In a.csv, the combination of column1 and column2 will be unique
b.csv looks like this
property1,property2, 300, t1
property1,property2, 400,t2
property3, property4,800,t1... (2 Replies)
I am trying to look for $2 of file1 (skipping the header) in $2 of file2 (skipping the header) and if they match and the value in $10 is > 30 and $11 is > 49, then print the line from file1 to a output file. If no match is foung the line is not printed. Both the input and output are tab-delimited.... (3 Replies)
Discussion started by: cmccabe
3 Replies
LEARN ABOUT OPENDARWIN
join
JOIN(1) BSD General Commands Manual JOIN(1)NAME
join -- relational database operator
SYNOPSIS
join [-a file_number | -v file_number] [-e string] [-o list] [-t char] [-1 field] [-2 field] file1 file2
DESCRIPTION
The join utility performs an ``equality join'' on the specified files and writes the result to the standard output. The ``join field'' is
the field in each file by which the files are compared. The first field in each line is used by default. There is one line in the output
for each pair of lines in file1 and file2 which have identical join fields. Each output line consists of the join field, the remaining
fields from file1 and then the remaining fields from file2.
The default field separators are tab and space characters. In this case, multiple tabs and spaces count as a single field separator, and
leading tabs and spaces are ignored. The default output field separator is a single space character.
Many of the options use file and field numbers. Both file numbers and field numbers are 1 based, i.e. the first file on the command line is
file number 1 and the first field is field number 1. The following options are available:
-a file_number
In addition to the default output, produce a line for each unpairable line in file file_number.
-e string
Replace empty output fields with string.
-o list
The -o option specifies the fields that will be output from each file for each line with matching join fields. Each element of list
has the either the form 'file_number.field', where file_number is a file number and field is a field number, or the form '0' (zero),
representing the join field. The elements of list must be either comma (``,'') or whitespace separated. (The latter requires quot-
ing to protect it from the shell, or, a simpler approach is to use multiple -o options.)
-t char
Use character char as a field delimiter for both input and output. Every occurrence of char in a line is significant.
-v file_number
Do not display the default output, but display a line for each unpairable line in file file_number. The options -v 1 and -v 2 may be
specified at the same time.
-1 field
Join on the field'th field of file 1.
-2 field
Join on the field'th field of file 2.
When the default field delimiter characters are used, the files to be joined should be ordered in the collating sequence of sort(1), using
the -b option, on the fields on which they are to be joined, otherwise join may not report all field matches. When the field delimiter char-
acters are specified by the -t option, the collating sequence should be the same as sort(1) without the -b option.
If one of the arguments file1 or file2 is ``-'', the standard input is used.
DIAGNOSTICS
The join utility exits 0 on success, and >0 if an error occurs.
COMPATIBILITY
For compatibility with historic versions of join, the following options are available:
-a In addition to the default output, produce a line for each unpairable line in both file 1 and file 2.
-j1 field
Join on the field'th field of file 1.
-j2 field
Join on the field'th field of file 2.
-j field
Join on the field'th field of both file 1 and file 2.
-o list ...
Historical implementations of join permitted multiple arguments to the -o option. These arguments were of the form
'file_number.field_number' as described for the current -o option. This has obvious difficulties in the presence of files named
'1.2'.
These options are available only so historic shellscripts don't require modification and should not be used.
STANDARDS
The join command conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
SEE ALSO awk(1), comm(1), paste(1), sort(1), uniq(1)BSD April 18, 2002 BSD