Using getline in awk

Login or Register to Ask a Question and Join Our Community

Using getline in awk

Tags

awk getline, shell scripts

Login to Discuss or Reply to this Discussion in Our Community

Top Forums Shell Programming and Scripting Using getline in awk

01-14-2010

Registered User

945, 8

Join Date: Dec 2009

Last Activity: 28 February 2018, 3:14 PM EST

Posts: 945

Thanks Given: 81

Thanked 8 Times in 8 Posts

Using getline in awk

I am using awk and want to use getline from a file like below

getline x < file

However file consists of two columns and I only want to store $2

Any way I can do this?

---------- Post updated at 06:54 AM ---------- Previous update was at 06:45 AM ----------

Done something like this. Seems to work.

Code:

awk ' { getline x < f; split( x, a, " " ); y = a[2];  \
    for( i = 2; i <= NF; ++i ) $i = ($i - y) / y }      \
    { print } ' f=$fin1.zv $fin2.zv > $fin2.zp

kristinu

View Public Profile for kristinu

Find all posts by kristinu

01-14-2010

Registered User

2,163, 123

Join Date: Nov 2007

Last Activity: 31 July 2016, 9:42 AM EDT

Location: H3X

Posts: 2,163

Thanks Given: 11

Thanked 123 Times in 116 Posts

Code:

awk '{getline x<f;split(x,a,FS);for(i=0;++i<=NF;)$i=($i-a[2])/a[2]}1' f=file1 file2

danmero

View Public Profile for danmero

Find all posts by danmero

Login or Register to Ask a Question

Previous Thread | Next Thread

10 More Discussions You Might Find Interesting

1. Shell Programming and Scripting

awk with if, getline, and another if

Howdy Folks, It seems like it is always awk that confuses the heck out of me and I even have books and examples. I have this line: awk '{if (/clientIP/)(SRV = $NF); if ($2 ~ /BUNDLE-GIM/) getline; if ($2 ~ /r100595/) {print SRV,"BUNDLE-GIM",$2}}' post.txt to parse this text: <api...

2. Shell Programming and Scripting

awk getline

Hi, I have an awk script with the following function in it . function cmd( c ) { while( ( c | getline foo) > 0 ){ return foo ; close( c ); } } c =...

3. Shell Programming and Scripting

awk getline problem

Hello, I want to print out the DNA sequence entries (tens of thousand!) that are longer than certain value (i=200) from a file (FASTA file) as: >S94D_ctg_8004 Average coverage: 402.95 ATAATGCCTGTGAATATGACATGTGTTCCTGTTTCTACATCAGACTACTATTCTTGCATA...

4. Shell Programming and Scripting

awk getline t file

I want to import a textfile with getline into var t which has several lines. How do import all lines, since it only imports the last line: while < ((getline t "textfile") > 0)

5. Shell Programming and Scripting

Some Awk Getline help?

Greetings, I have about 3000 files that I want to search. The first column in all of these 3000 files has a unique serial number on each line. The subsequent columns have lots of data. I have another masterfile with three columns to help me find all the data I need in a moments notice: col 1...

6. Shell Programming and Scripting

awk getline question

Hi there, I have an ifconfig output and i want to write a script that determines whether there is a line "groupname ipmp" on a particular interface here is my example ifconfig -a output lo0: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1 inet 127.0.0.1...

7. Shell Programming and Scripting

awk getline

How do you make the getline function return to the original line? The example below should make it clear where I am currently going wrong. Thanks AWK SCRIPT: ------------- awk -F '-' '{ tmpLine = "EMPTY" print "CURRENT LINE :"$0 getline tmpLine print "NEXT LINE :"tmpLine }'...

8. Shell Programming and Scripting

awk and system getline

Hello, Need some help here. I have this script (test.sh): #!/bin/sh var=$1 (( var = 2 * var )) echo $var Now I want to call this script from awk with one argument and then capture the result in a variable, something like: echo 40 | awk ' { x = $1; "test.sh " x | getline y; print y }...

9. Shell Programming and Scripting

awk getline help maybe?

hello collegues, I am attempting to use awk to search file1 (serverlist.csv) from each row with file2 (supported.txt). If the is no entry exists in serverlist then output to a file called notsupp.out if there is an entry output to supp.out I can do this with basic shell scripting however...

10. Shell Programming and Scripting

awk:Problem with getline

$ echo |awk ' BEGIN {"date" | getline current_time;close("date");print "Report printed on " current_time}' Report printed on Thu May 11 14:57:29 METDST 2006 This example works fine but how can i print all the output when is longer...

Login or Register to Ask a Question