kubectl-sh-bash

#!/bin/sh
# kubectl-sh-bash (part of ossobv/vcutil) // wdoekes/2019 // Public Domain
#
# Helper script to start bash(1) in a k8s pod with the right window size. Usage
# through kubectl wrapper.
#
# Example:
#
#   kubectl-sh-bash -n NAMESPACE exec -it PODNAME
#
# Or, the kubectl-wrapper wrapped version:
#
#   kubectl -n NAMESPACE exec -it --sh-bash PODNAME
#
# That last version will enable tab-completion to work as usual.
#
stty=$(stty -a)
LINES=$(echo "$stty" | sed -ne 's/.*; rows \([0-9]\+\);.*/\1/p')
COLUMNS=$(echo "$stty" | sed -ne 's/.*; columns \([0-9]\+\);.*/\1/p')
test $# -eq 0 && echo "Usage: $0 [OPTIONS] exec PODNAME" && exit 1
exec ${KUBECTL:-kubectl} "$@" -it -- \
  sh -c "stty rows $LINES cols $COLUMNS && exec bash"