How count number of lines in linux excluding headers?-CodePudding

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How count number of lines in linux excluding headers?

Time：10-13

I have to count the number of replicasets running in a system.

kubectl get replicasets | wc -l

It give output 2 as it counts the header as well.

NAME              DESIRED   CURRENT   READY   AGE
new-replica-set   4         4         0       20s

How to print the count excluding the headers?

CodePudding user response：

add no-headers

kubectl get replicasets --no-headers | wc -l

if you want to count rs from all namespaces just add -A before --no-headers

kubectl get replicasets -A --no-headers | wc -l