Reformatting Scrutinizer's first script and adding comments:
Hopefully, the above description will enable you to determine how the 2nd script does the same thing using one array instead of two. If you are still confused, tell us what still doesn't make sense and we'll try to explain it a different way.
These 3 Users Gave Thanks to Don Cragun For This Post:
Hello,
I have a number of tab delimited data files consists of two columns. Like that:
File1
800.000000 0.002744
799.000000 0.002517
798.000000 0.002836
797.000000 0.002553
FIle2
800.000000 0.000261
799.000000 0.000001
798.000000 0.000551
797.000000 0.000275
File3... (19 Replies)
Hi there,
I'm trying to merge two files and make a third file.
However, two of the columns need to match exactly in both files AND I want everything from both files in the output if the two columns match in that row.
First file looks like this:
chr1 10001980 T A
Second... (12 Replies)
Hi,
I have two text files that I would like to merge/join. I would like to join them if the first columns of both text files match and the second column of the first text file matches the third column of the second text file.
Example input:
First file:
1334 10 0 0 1 5.2
1334 12 0 0 1 4.5... (4 Replies)
Dear List,
I have a file of csv data which has a different line per compliance check per host. I do not want any omissions from this csv data file which looks like this:
date,hostname,status,color,check
02-03-2012,COMP1,FAIL,Yellow,auth_pass_change... (3 Replies)
Hi.
I have 2 files of below format.
File1
AA~1~STEVE~3.1~4.1~5.1
AA~2~DANIEL~3.2~4.2~5.2
BB~3~STEVE~3.3~4.3~5.3
BB~4~TIM~3.4~4.4~5.4
File 2
AA~STEVE~AA STEVE WORKS at AUTO COMPANY
AA~DANIEL~AA DANIEL IS A ELECTRICIAN
BB~STEVE~BB STEVE IS A COOK
I want to match 1st and 3rd... (2 Replies)
Respected Members.
Hello.
This is my first post in the forum. I will try to follow all the rules as prescribed by the forum. In case of non-compliance, I request you to kindly give me some more time to understand and abide by them.
I am working on two files. I wish to merge the two files... (1 Reply)
Respected Members.
Hello.
This is my first post in the forum. I will try to follow all the rules as prescribed by the forum. In case of non-compliance, I request you to kindly give me some more time to understand and abide by them.
I am working on two files. I wish to merge the two files... (6 Replies)
Hi,
i have 2 files , the data i need to match is in masterfile and i need to pull out column 3 from master if column 1 and 2 match and output entire row to new file
I have tried with join and awk and i keep getting blank outputs or same file
is there an easier way than what i am... (4 Replies)
Discussion started by: axis88
4 Replies
LEARN ABOUT OSX
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 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 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.
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 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 shell scripts do not require modification. They should not be used in new code.
LEGACY DESCRIPTION
The -e option causes a specified string to be substituted into empty fields, even if they are in the middle of a line. In legacy mode, the
substitution only takes place at the end of a line.
Only documented options are allowed. In legacy mode, some obsolete options are re-written into current options.
For more information about legacy mode, see compat(5).
SEE ALSO awk(1), comm(1), paste(1), sort(1), uniq(1), compat(5)STANDARDS
The join command conforms to IEEE Std 1003.1-2001 (``POSIX.1'').
BSD July 5, 2004 BSD