We have talked before about how to get current month using the below line of code:

echo $(date +%m)

It prints out 01, 02, etc.

As per the GNU date manpage:

By default, date pads numeric fields with zeroes. The following
    optional flags may follow '%':
    - (hyphen) do not pad the field

So you can remove leading zero by hyphen as below:

echo $(date +%-m)

It prints out 1, 2, etc.

#linux #bash #date

In order to enable bash completion in Kubernetes you can usee the below command in linux bash:

source <(kubectl completion bash)

Now to test this enter the below command and you should see the completion:

kubectl cl<TAB>

It should be expanded to kubectl cluster-info.


#linux #bash #shell #kubernetes #kubectl

How to recursively rename filenames?

find . -name '*txt' -exec bash -c ' mv $0 ${0/brand-/category-}' {} \;

The above command renames txt files starting with brand- to category-.

#linux #bash #find #rename #batch_rename