awk to grep rows by multiple fields

Tags

awk, grep, multiple fields, shell scripts

Top Forums Shell Programming and Scripting awk to grep rows by multiple fields

Prev Next

05-01-2012

Registered User

564, 13

Join Date: Sep 2009

Last Activity: 26 May 2021, 8:59 AM EDT

Location: Saskatchewan, Canada

Posts: 564

Thanks Given: 376

Thanked 13 Times in 12 Posts

awk to grep rows by multiple fields

Hello,
I met a challenge to extract part of the table. I'd like to grep the first three matches based on field1 and field2. Input:

Code:

D A 92.85   1315    83      11     
D A 95.90   757     28      3      
D A 94.38   480     20      7      
D A 91.21   307     21      6      
D A 94.26   244     14      0      
D A 93.66   142     9       0      
D B 91.82   1321    92      16     
D B 94.85   757     30      4      
D B 94.17   480     22      6      
D B 90.79   304     26      2      
D B 93.39   242     16      0      
D B 90.97   144     11      2      
D C 89.86   1321    119     15

Output

Code:

D A 92.85   1315    83      11     
D B 91.82   1321    92      16     
D C 89.86   1321    119     15

Similar question about picking up the first match was posted before, but this one is more brain-twisting, and I feel there must be a simple script to do the job. Thanks a lot!

yifangt

View Public Profile for yifangt

Find all posts by yifangt

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

Print multiple fields with awk

so its common knowledge one can print multiple fields with simple commands like this: echo 12 44 45 552 24 | awk '{print $1,$4,$3}' but suppose i want to avoid specifying the "$" symbol. is that possible? can something like this be done: echo 12 44 45 552 24 | awk '{print $(1,4,3)}' ...

2. Shell Programming and Scripting

Replace 0 with 1 in multiple fields with awk

Hello, I have the following input file: 1 3 3 2 3 3 4 0 4 0 5 4 5 2 2 0 5 3 4 0 6 0 3 2 I am trying to remove all zeroes in fields 2 and 4 and replace them with "1's" I tried the following, but it's not working awk -F"\t" '{ if (($2==0) || ($4==0) $2=1; $4=1; print $0 ) }' input ...

3. Shell Programming and Scripting

awk multiple fields separators

Can you please help me with this .... Input File share "FTPTransfer" "/v31_fs01/root/FTP-Transfer" umask=022 maxusr=4294967295 netbios=NJ09FIL530 share "Test" "/v31_fs01/root/Test" umask=022 maxusr=4294967295 netbios=NJ09FIL530 share "ENR California" "/v31_fs01/root/ENR California"...

4. Shell Programming and Scripting

awk gsub multiple fields

Hi, I am trying to execute this line awk -F ";" -v OFS=";" '{gsub(/\./,",",$6); print}' FILE but for multiple fields $6 $7 $8 Do you have a suggstion? Tried: awk -F ";" -v OFS="";"" "function GSUB( F ) {gsub(/\./,\",\",$F); print} { GSUB( 6 ); GSUB( 7 ); GSUB( 8 ) } 1"...

5. Shell Programming and Scripting

Loop through multiple rows using awk

Hi, i'm been browsing through the threads on how to do looping of multiple lines in awk but havent found the one i needed. I have a data which looks like this below. I need to compute for the monthly average of values per record and i used the awk argument below. how do i tell awk to execute the...

6. Shell Programming and Scripting

Remove rows with first 4 fields duplicated in awk

Hi, I am trying to use awk to remove all rows where the first 4 fields are duplicates. e.g. in the following data lines 6-9 would be removed, leaving one copy of the duplicated row (row 5) Borgarhraun FH9822 ol24 FH9822_ol24_m20 ol Deformed c Borgarhraun FH9822 ol24 ...

7. UNIX for Dummies Questions & Answers

Formatting Multiple fields on 1 line to multiple rows

I'm trying extract a number of filename fields from a log file and copy them out as separate rows in a text file so i can load them into a table. I'm able to get the filenames but the all appear on one line. I tried using the cut command with the -d (delimiter) option but cant seem to make it...

8. Shell Programming and Scripting

AWK multiple fields separators

I need to print the second field of a file, taking spaces, tab and = as field separators. ; for 16-bit app support MAPI=1 CMC=1 CMCDLLNAME32=mapi32.dll CMCDLLNAME=mapi.dll MAPIX=1 MAPIXVER=1.0.0.1 OLEMessaging=1 asf=MPEGVideo asx=MPEGVideo ivf=MPEGVideo m3u=MPEGVideo

9. Shell Programming and Scripting

grep multiple rows from file.

Hi, I have file1 that contains many columns as show the first three below: "At1g29930" 198 2105 "At5g46430" 5569 9576 "At1g64740" 1908 2505 "At5g46430" 6717 11317 "At1g64740" 453 655 "At1g12470" 33 18 "At1g80680" 149 262 "At1g23040" ...

10. Shell Programming and Scripting

extract multiple cloumns from multiple files; skip rows and include filenames; awk

Hello, I am trying to write a bash shell script that does the following: 1.Finds all *.txt files within my directory of interest 2. reads each of the files (25 files) one by one (tab-delimited format and have the same data format) 3. skips the first 10 rows of the file 4. extracts and...

LEARN ABOUT V7

zgrep

ZGREP(1)						      General Commands Manual							  ZGREP(1)

NAME

       zgrep - search possibly compressed files for a regular expression

SYNOPSIS

       zgrep [ grep_options ] [ -e ] pattern filename...

DESCRIPTION

       Zgrep  invokes  grep  on  compressed  or  gzipped  files.   These  grep	options  will  cause  zgrep  to  terminate  with  an  error  code:
       (-[drRzZ]|--di*|--exc*|--inc*|--rec*|--nu*).  All other options specified are passed directly to grep.  If no file is specified,  then  the
       standard input is decompressed if necessary and fed to grep.  Otherwise the given files are uncompressed if necessary and fed to grep.

       If the GREP environment variable is set, zgrep uses it as the grep program to be invoked.

EXIT CODE

       2 - An option that is not supported was specified.

AUTHOR

       Charles Levert (charles@comm.polymtl.ca)

SEE ALSO

       grep(1), gzexe(1), gzip(1), zdiff(1), zforce(1), zmore(1), znew(1)

																	  ZGREP(1)

Shell Programming and Scripting