03-06-2017
Not quite.
A[$1]=$2: Create an element for array A indexed by $1 (the first field in the line) and assign $2 (the second field)'s contents.
next stop processing THIS actual line in file2; read in and process next line until done with file2
print $2, A[$5] When processing the second file (file1), print its second field, and use fifth field as an index into array A, and, after OFS, print that value or an empty string if no element exists.
This User Gave Thanks to RudiC For This Post:
10 More Discussions You Might Find Interesting
1. Shell Programming and Scripting
I've got two large csv text table files with different number of columns each.
I have to compare them based on first two columns and create resulting file
that would in case of matched first two columns include all values from first one and all values (except first two colums) from second one. I... (5 Replies)
Discussion started by: agb2008
5 Replies
2. Shell Programming and Scripting
I would like ot create shell script/ bash to create diffrent files based on a file and parameters list.
Here is the detail example: I have a textfile and four static parameter files (having ‘?'). mainfile.txt has below records (this count may be more than 50)
A200001
A200101
B200001... (9 Replies)
Discussion started by: raghav525
9 Replies
3. UNIX for Advanced & Expert Users
Hey everyone.
I am trying to figure out a way to create a file that will be renamed based off of one of multiple files. For example, if I have 3 files (cat.ctl, dog.ctl, and bird.ctl) that gets placed on to an ftp site I want to create a single file called new.cat.ctl, new.dog.ctl, etc for each... (3 Replies)
Discussion started by: coach5779
3 Replies
4. Shell Programming and Scripting
Hi,
I have two text files. Need to create a third text file extracting specific data from first two existing files..
Text File 1: Format contains:
SQL*Loader: Release 10.2.0.1.0 - Production on Wed Aug 4 21:06:34 2010
some text ............so on...and somwhere text like:
Record 1:... (1 Reply)
Discussion started by: shashi143ibm
1 Replies
5. Shell Programming and Scripting
Hi All,
I have a file which looks like this:
234422 1 .00222
323232 1 3232
32323 1 0.00222
1234 2 1211
2332 2 0.9
233 3 0.883
123 3 45
As you can see, the second column of the file is already sorted which I did using sort command.
Now, I want to create files based on the second... (1 Reply)
Discussion started by: shoaibjameel123
1 Replies
6. Shell Programming and Scripting
Hi , I want to compare first 3 columns of File A and File B and create a new file File C which will have all rows from File B and will include rows that are present in File A and not in File B based on First 3 column comparison.
Thanks in advance for your help.
File A
A,B,C,45,46... (2 Replies)
Discussion started by: ady_koolz
2 Replies
7. Shell Programming and Scripting
Hello ,
Can anyone please help me to solve the below -
Input.txt
source table abc
col1 char
col2 number
source table bcd
col1 date
col2 char
output should be 2 files based on the row separator "source table"
abc.txt
col1 char (6 Replies)
Discussion started by: Pratik4891
6 Replies
8. Shell Programming and Scripting
Hi All,
I have two files. File1 and File2.
Want to create another file with all the records of File1 those are not present in File2.
Please guide.
Thanks in advanced.
Anupam (3 Replies)
Discussion started by: Anupam_Halder
3 Replies
9. Shell Programming and Scripting
We have the data looks like below in a log file.
I want to generat files based on the string between two hash(#) symbol like below
Source:
#ext1#test1.tale2 drop
#ext1#test11.tale21 drop
#ext1#test123.tale21 drop
#ext2#test1.tale21 drop
#ext2#test12.tale21 drop
#ext3#test11.tale21 drop... (5 Replies)
Discussion started by: Sanjeev G
5 Replies
10. UNIX for Beginners Questions & Answers
Hello.
I am trying to get some info from log file.
I have fileA , which contains all the country prefixes (the file contains one column and "n" rows ).
And i have fileB, which contains huge data of phone numbers (the file contains one column and "n" rows).
What i want to do is, to count... (7 Replies)
Discussion started by: dragonfly85
7 Replies
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 either the form file_number.field, where file_number is a file number and field is a field number, or the form '0' (zero), repre-
senting the join field. The elements of list must be either comma (',') or whitespace separated. (The latter requires quoting 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 file1.
-2 field
Join on the field'th field of file2.
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.
EXIT STATUS
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 file1 and file2.
-j1 field
Join on the field'th field of file1.
-j2 field
Join on the field'th field of file2.
-j field
Join on the field'th field of both file1 and file2.
-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 shell scripts do not require modification and should not be used.
SEE ALSO
awk(1), comm(1), paste(1), sort(1), uniq(1)
STANDARDS
The join command conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
BSD
July 5, 2004 BSD