I think you want a lookup table from file1: $1 is the lookup key and $2 the returned value.
Now you can test existence with (key in s) or get the value with s[key] or loop through the keys with for (key in s).
I think the following captures the wanted values in file2:
Note1: the target array as 3rd argument is an extension in GNU-awk. (Maybe you want to consider perl? Then it works on all platforms that have perl.)
Note2: for a most exact string match use a "border character". I have even prepended a ";" to the input string for match() in order to ensure it exists even at the beginning.
This User Gave Thanks to MadeInGermany For This Post:
Hi Friends,
I have a file with the following values..
xyz.txt,12345.xml
abc.txt,04567.xml
cde.txt,12134.xml
I would like to extract all the 2nd column values twice as shown in the example like
12345,12345.xml
04567,04567.xml
12134,12134.xml
Please advice!!
In the formus one of... (7 Replies)
I have read another post about this issue and am wondering how to adapt it
to my own, much simpler, issue.
I have a file of user IDs like so:
333333
321321
546465
...etc
I need to take each number and use it to print records wherein the 5th
field matches the user ID pulled from the... (2 Replies)
Hi everyone,
I have file1 and file2 comma separated both.
file1 is:
Header1,Header2,Header3,Header4,Header5,Header6,Header7,Header8,Header9,Header10
Code7,,,,,,,,,
Code5,,,,,,,,,
Code3,,,,,,,,,
Code9,,,,,,,,,
Code2,,,,,,,,,file2... (17 Replies)
Hello friends,
I have a text file with many columns (no. columns vary from row to row) separated by space. I need to collect all the values from 18th column to the end from each line and group them as pairs and then numbering like below..
1. 18th-col-value 19th-col-value 2. 20th-col-value ... (5 Replies)
In the below awk I am trying to print expName only if another tag planExecuted is true. In addition to the expName I am also printing planShortID. For some reason the word experiment gets printed so I remove it with sed. I have attached the complete index.html as well as included a sample of it... (1 Reply)
The below awk is used with the attached index.html and matches the specific user id in the sub portion with path of /rundb/api/v1/plugin/49/. The command does run but the output is blank. Something changed in the file structure as it used to work.
So using the first line in the output:
... (2 Replies)
I am trying to use awk to match the NM_ in file with $1 of id which is tab-delimited. The NM_ will always be in the line of file that starts with > and be after the second _. When there is a match between each NM_ and id, then the value of $2 in id is substituted or used to update the NM_. Each NM_... (3 Replies)
I am trying to use awk to find all the $2 values in file2 which is ~30MB and tab-delimited, that are between $2 and $3 in file1 which is ~2GB and tab-delimited.
I have just found out that I need to use $1 and $2 and $3 from file1 and $1 and $2of file2 must match $1 of file1 and be in the range... (6 Replies)
In the awk below which executes as is, I am trying to add a condition that will extract the text or
value after the FR= for the lines in each line of file1 compared
to file2. As is the lines between the two files are either a match, Missing in file 1, or Missing in file2,
but I can not add the... (1 Reply)
Discussion started by: cmccabe
1 Replies
LEARN ABOUT DEBIAN
plan9-join
JOIN(1) General Commands Manual JOIN(1)NAME
join - relational database operator
SYNOPSIS
join [ options ] file1 file2
DESCRIPTION
Join forms, on the standard output, a join of the two relations specified by the lines of file1 and file2. If one of the file names is the
standard input is used.
File1 and file2 must be sorted in increasing ASCII collating sequence on the fields on which they are to be joined, normally the first in
each line.
There is one line in the output for each pair of lines in file1 and file2 that have identical join fields. The output line normally con-
sists of the common field, then the rest of the line from file1, then the rest of the line from file2.
Input fields are normally separated spaces or tabs; output fields by space. In this case, multiple separators count as one, and leading
separators are discarded.
The following options are recognized, with POSIX syntax.
-a n In addition to the normal output, produce a line for each unpairable line in file n, where n is 1 or 2.
-v n Like -a, omitting output for paired lines.
-e s Replace empty output fields by string s.
-1 m
-2 m Join on the mth field of file1 or file2.
-jn m Archaic equivalent for -n m.
-ofields
Each output line comprises the designated fields. The comma-separated field designators are either 0, meaning the join field, or
have the form n.m, where n is a file number and m is a field number. Archaic usage allows separate arguments for field designators.
-tc Use character c as the only separator (tab character) on input and output. Every appearance of c in a line is significant.
EXAMPLES
sort /etc/passwd | join -t: -1 1 -a 1 -e "" - bdays
Add birthdays to the /etc/passwd file, leaving unknown birthdays empty. The layout of /adm/users is given in passwd(5); bdays con-
tains sorted lines like
tr : ' ' </etc/passwd | sort -k 3 3 >temp
join -1 3 -2 3 -o 1.1,2.1 temp temp | awk '$1 < $2'
Print all pairs of users with identical userids.
SOURCE
/src/cmd/join.c
SEE ALSO sort(1), comm(1), awk(1)BUGS
With default field separation, the collating sequence is that of sort -b -ky,y; with -t, the sequence is that of sort -tx -ky,y.
One of the files must be randomly accessible.
JOIN(1)