CODEWITHSUNDEEP
bashawk
MR.i
MR.i

Reputation: 115

awk print 1st row with condition

The command:

kubectl get pods -n hello | awk '$1 ~ "hello-uwsgi-deployment"  {print $1}'

outputs 

hello-uwsgi-deployment-5b7498f864-4bfrx
hello-uwsgi-deployment-5b7498f864-h9rxz
hello-uwsgi-deployment-5b7498f864-qlg8z
hello-uwsgi-deployment-5b7498f864-r5nfs
hello-uwsgi-deployment-5b7498f864-vxr6x

How can I print only the first line with the above condition using awk?

I tried

kubectl get pods -n hello |
awk '($1 ~ "hello-uwsgi-deployment") && ('NR==1') {print $1}'

but it outputs nothing.

EDIT:kubectl get pods -n hello | awk '($1 ~ /hello-uwsgi-deployment/){print;exit}' this works perfectly.

How to get the same working with multiple conditional statements using == and NR==?

Upvotes: 3

Views: 1882

Answers (2)

rootkonda
rootkonda

Reputation: 1743

You can redirect the output to head command:

kubectl get pods -n hello | awk '$1 ~ "hello-uwsgi-deployment"  {print $1}' | head -n 1

Upvotes: 2

RavinderSingh13
RavinderSingh13

Reputation: 133518

If I got your question correctly, you want to print only first line which has string hello-uwsgi-deployment then could you please try following. I am also using exit so that it will NOT read whole Input_file and will save time for us.

kubectl get pods -n hello | awk '($1 ~ /hello-uwsgi-deployment/){print;exit}'

OR of you want to simply do search string in whole line then try following:

kubectl get pods -n hello | awk '/hello-uwsgi-deployment/{print;exit}'

Upvotes: 5

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