Sponsored Content
Top Forums Shell Programming and Scripting awk conditional operators- lookup value in 2nd file Post 303024998 by Geneanalyst on Monday 22nd of October 2018 12:21:32 PM
Old 10-22-2018
Sorry vgersh99, my bad. My file3 had some leading spaces which after cleaning up produced the correct output.


Thanks for the code!

------ Post updated at 11:21 AM ------

Quote:
Originally Posted by vgersh99
Code:
awk -F '\t' 'FNR==NR {f3[$1];next} $1 in f3' OFS="\t" file3 file1.txt > file2.txt


Do you mind posting an explanation of the steps inside the code
This User Gave Thanks to Geneanalyst For This Post:
 

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

file Lookup using awk

Hi All, I have two files file1 and file2(lookup file).I need to map more than one keyfields of file1 with file2.how can we achieve it using awk. file1(max 2.2 million records) -------------------------- 680720|680721|077 680720|680721|978 680721|680722|090 file2(no idea about the... (1 Reply)
Discussion started by: jerome Sukumar
1 Replies

2. UNIX for Advanced & Expert Users

Clueless about how to lookup and reverse lookup IP addresses under a file!!.pls help

Write a quick shell snippet to find all of the IPV4 IP addresses in any and all of the files under /var/lib/output/*, ignoring whatever else may be in those files. Perform a reverse lookup on each, and format the output neatly, like "IP=192.168.0.1, ... (0 Replies)
Discussion started by: choco4202002
0 Replies

3. Shell Programming and Scripting

Multiple file lookup using awk

I want to lookup filea with fileb,filec and filed. If entry in filea exist in fileb and filec mark Y and then if entry in filea exist in filed mark as Y. Final output should have all the entries from filea. This prints only matching entries from file a in fileb i want all entries from... (9 Replies)
Discussion started by: pinnacle
9 Replies

4. UNIX for Dummies Questions & Answers

Help with AWK - Compare a field in a file to lookup file and substitute if only a match

I have the below 2 files: 1) Third field from file1.txt should be compared to the first field of lookup.txt. 2) If match found then third field, file1.txt should be substituted with the second field from lookup.txt. 3)Else just print the line from file1.txt. File1.txt:... (4 Replies)
Discussion started by: venalla_shine
4 Replies

5. Shell Programming and Scripting

Combined sed+awk for lookup csv file

have written a combined sed+awk to perform a lookup operation which works but looking to enhance it. looking to match a record using any of the comma separated values + return selected fields from the record - including the field header. so: cat foo make,model,engine,trim,value... (6 Replies)
Discussion started by: jack.bauer
6 Replies

6. Shell Programming and Scripting

awk to print field from lookup file in output

The below awk uses $3 and $4 in search as the min and max, then takes each $2 value in lookup and compares it. If the value in lookupfalls within the range in searchthen it prints the entire line in lookup/ICODE]. What I can't seem to figure out is how to print the matching $5 from search on that... (4 Replies)
Discussion started by: cmccabe
4 Replies

7. Shell Programming and Scripting

awk to lookup section of file in a range of another file

In the below, I am trying to lookup $1 and $2 from file1, in a range search using $1 $2 $3 of file2. If the search key from file1 is found in file2, then the word low is printed in the last field of that line in the updated file1. Only the last section of file1 needs to be searched, but I am not... (6 Replies)
Discussion started by: cmccabe
6 Replies

8. Shell Programming and Scripting

awk to lookup value in one file in another range

I am trying to update the below awk, kindly provided by @RavinderSingh13, to update each line of file1 with either Low or No Low based on matching $2 of file1 to a range in $2 and $3 of file2. If the $2 value in file1 matches the range in file2 then that line is Low, otherwise it is No Low in the... (3 Replies)
Discussion started by: cmccabe
3 Replies

9. Shell Programming and Scripting

awk to lookup stored variable in file and print matching line

The bash bash below extracts the oldest folder from a directory and stores it in filename That result will match a line in bold in input. In the matching line there is an_xxx digit in italics that (once the leading zero is removed) will match a line in link. That is the lint to print in output.... (2 Replies)
Discussion started by: cmccabe
2 Replies

10. Shell Programming and Scripting

awk to format file with conditional split

In the awk below I am splitting $7 on the : (colon) then - (hyphen) as array a. The word chr is printed at the start of every $1 line. Next, $4 is split on the > (greater then) as array b. I am not sure how to account for the two other possibilities in $4 so the correct output is printed. Every... (3 Replies)
Discussion started by: cmccabe
3 Replies
comm(1) 							   User Commands							   comm(1)

NAME
comm - select or reject lines common to two files SYNOPSIS
comm [-123] file1 file2 DESCRIPTION
The comm utility reads file1 and file2, which must be ordered in the current collating sequence, and produces three text columns as output: lines only in file1; lines only in file2; and lines in both files. If the input files were ordered according to the collating sequence of the current locale, the lines written will be in the collating sequence of the original lines. If not, the results are unspecified. OPTIONS
The following options are supported: -1 Suppresses the output column of lines unique to file1. -2 Suppresses the output column of lines unique to file2. -3 Suppresses the output column of lines duplicated in file1 and file2. OPERANDS
The following operands are supported: file1 A path name of the first file to be compared. If file1 is -, the standard input is used. file2 A path name of the second file to be compared. If file2 is -, the standard input is used. USAGE
See largefile(5) for the description of the behavior of comm when encountering files greater than or equal to 2 Gbyte ( 2**31 bytes). EXAMPLES
Example 1: Printing a list of utilities specified by files If file1, file2, and file3 each contain a sorted list of utilities, the command example% comm -23 file1 file2 | comm -23 - file3 prints a list of utilities in file1 not specified by either of the other files. The entry: example% comm -12 file1 file2 | comm -12 - file3 prints a list of utilities specified by all three files. And the entry: example% comm -12 file2 file3 | comm -23 -file1 prints a list of utilities specified by both file2 and file3, but not specified in file1. ENVIRONMENT VARIABLES
See environ(5) for descriptions of the following environment variables that affect the execution of comm: LANG, LC_ALL, LC_COLLATE, LC_CTYPE, LC_MESSAGES, and NLSPATH. EXIT STATUS
The following exit values are returned: 0 All input files were successfully output as specified. >0 An error occurred. ATTRIBUTES
See attributes(5) for descriptions of the following attributes: +-----------------------------+-----------------------------+ | ATTRIBUTE TYPE | ATTRIBUTE VALUE | +-----------------------------+-----------------------------+ |Availability |SUNWesu | +-----------------------------+-----------------------------+ |CSI |enabled | +-----------------------------+-----------------------------+ |Interface Stability |Standard | +-----------------------------+-----------------------------+ SEE ALSO
cmp(1), diff(1), sort(1), uniq(1), attributes(5), environ(5), largefile(5), standards(5) SunOS 5.10 3 Mar 2004 comm(1)
All times are GMT -4. The time now is 02:56 AM.
Unix & Linux Forums Content Copyright 1993-2022. All Rights Reserved.
Privacy Policy