File redirection inside for loop

Question

I have am redirecting the file inside file but at the last the file is going to nullify, my code is like below

#!/bin/ksh
newlycreated=`cat /axphome/gdevarad/file.txt|awk '{print $1}'`

for i in $newlycreated
do

    cat file1.txt |grep -v $i > /axphome/gdevarad/file1.txt

done

file.txt contains

india    30
pakistan 40

file1.txt contains

india    30
pakistan 40
germany  50
japan    60
aus      70

You are not providing feedback on any of the answers to the question you are posting, the last one being stackoverflow.com/questions/41059906/…, unless you appreciate what people are doing to help you, you won't get much response here! — Inian
– Inian, Commented Dec 15, 2016 at 17:10

Walter A · Accepted Answer · 2016-12-21 22:24:53Z

1

Replace > /axphome/gdevarad/file1.txt with >> /axphome/gdevarad/file1.txt so you do not overwrite your results in every loop.
Evn better: Place > /axphome/gdevarad/file1.txt after done .

answered Dec 21, 2016 at 22:24

Walter A

20.2k2 gold badges29 silver badges46 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

File redirection inside for loop

1 Answer 1

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related