add kube PS to cloud-toolbox
This commit is contained in:
Szwendacz
Maciej Lebiest
parent
9a2ab1701c
commit
0a0a36e36b
2 changed files with 428 additions and 1 deletions
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@ -24,7 +24,11 @@ RUN dnf clean all && \
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WORKDIR /data
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WORKDIR /data
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COPY kube_ps.sh /root/kube_ps.sh
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RUN echo $'[ -f /usr/share/fzf/shell/key-bindings.bash ] && source /usr/share/fzf/shell/key-bindings.bash' >> /root/.bashrc
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RUN echo $'[ -f /usr/share/fzf/shell/key-bindings.bash ] && source /usr/share/fzf/shell/key-bindings.bash;\
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source /root/kube_ps.sh;\
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PS1=\'[cloud-toolbox \W/ $(kube_ps1)]\$ \'\
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' >> /root/.bashrc
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ENTRYPOINT [ "/bin/bash" ]
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ENTRYPOINT [ "/bin/bash" ]
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423
cloud-toolbox/kube_ps.sh
Normal file
423
cloud-toolbox/kube_ps.sh
Normal file
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@ -0,0 +1,423 @@
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# Kubernetes prompt helper for bash/zsh
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# Displays current context and namespace
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# Copyright 2023 Jon Mosco
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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# Debug
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[[ -n $DEBUG ]] && set -x
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# Default values for the prompt
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# Override these values in ~/.zshrc or ~/.bashrc
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KUBE_PS1_BINARY="${KUBE_PS1_BINARY:-kubectl}"
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KUBE_PS1_SYMBOL_ENABLE="${KUBE_PS1_SYMBOL_ENABLE:-true}"
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_KUBE_PS1_SYMBOL_DEFAULT=${_KUBE_PS1_SYMBOL_DEFAULT:-$'\u2388'}
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KUBE_PS1_SYMBOL_PADDING="${KUBE_PS1_SYMBOL_PADDING:-false}"
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KUBE_PS1_SYMBOL_USE_IMG="${KUBE_PS1_SYMBOL_USE_IMG:-false}"
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KUBE_PS1_SYMBOL_OC_IMG="${KUBE_PS1_SYMBOL_OC_IMG:-false}"
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_KUBE_PS1_SYMBOL_OC=${KUBE_PS1_SYMBOL_OC:-$'\ue7b7'}
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KUBE_PS1_NS_ENABLE="${KUBE_PS1_NS_ENABLE:-true}"
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KUBE_PS1_CONTEXT_ENABLE="${KUBE_PS1_CONTEXT_ENABLE:-true}"
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KUBE_PS1_PREFIX="${KUBE_PS1_PREFIX-(}"
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KUBE_PS1_SEPARATOR="${KUBE_PS1_SEPARATOR-|}"
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KUBE_PS1_DIVIDER="${KUBE_PS1_DIVIDER-:}"
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KUBE_PS1_SUFFIX="${KUBE_PS1_SUFFIX-)}"
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KUBE_PS1_SYMBOL_COLOR="${KUBE_PS1_SYMBOL_COLOR-blue}"
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KUBE_PS1_CTX_COLOR="${KUBE_PS1_CTX_COLOR-red}"
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KUBE_PS1_NS_COLOR="${KUBE_PS1_NS_COLOR-cyan}"
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KUBE_PS1_BG_COLOR="${KUBE_PS1_BG_COLOR}"
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KUBE_PS1_CLUSTER_FUNCTION="${KUBE_PS1_CLUSTER_FUNCTION}"
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KUBE_PS1_NAMESPACE_FUNCTION="${KUBE_PS1_NAMESPACE_FUNCTION}"
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_KUBE_PS1_KUBECONFIG_CACHE="${KUBECONFIG}"
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_KUBE_PS1_DISABLE_PATH="${HOME}/.kube/kube-ps1/disabled"
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_KUBE_PS1_LAST_TIME=0
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# Determine our shell
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_kube_ps1_shell_type() {
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local _KUBE_PS1_SHELL_TYPE
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if [ "${ZSH_VERSION-}" ]; then
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_KUBE_PS1_SHELL_TYPE="zsh"
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elif [ "${BASH_VERSION-}" ]; then
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_KUBE_PS1_SHELL_TYPE="bash"
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fi
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echo $_KUBE_PS1_SHELL_TYPE
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}
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_kube_ps1_init() {
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[[ -f "${_KUBE_PS1_DISABLE_PATH}" ]] && KUBE_PS1_ENABLED=off
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case "$(_kube_ps1_shell_type)" in
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"zsh")
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_KUBE_PS1_OPEN_ESC="%{"
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_KUBE_PS1_CLOSE_ESC="%}"
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_KUBE_PS1_DEFAULT_BG="%k"
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_KUBE_PS1_DEFAULT_FG="%f"
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setopt PROMPT_SUBST
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autoload -U add-zsh-hook
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add-zsh-hook precmd _kube_ps1_prompt_update
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zmodload -F zsh/stat b:zstat
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zmodload zsh/datetime
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;;
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"bash")
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_KUBE_PS1_OPEN_ESC=$'\001'
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_KUBE_PS1_CLOSE_ESC=$'\002'
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_KUBE_PS1_DEFAULT_BG=$'\033[49m'
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_KUBE_PS1_DEFAULT_FG=$'\033[39m'
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[[ $PROMPT_COMMAND =~ _kube_ps1_prompt_update ]] || PROMPT_COMMAND="_kube_ps1_prompt_update;${PROMPT_COMMAND:-:}"
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;;
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esac
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}
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_kube_ps1_color_fg() {
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local _KUBE_PS1_FG_CODE
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case "${1}" in
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black) _KUBE_PS1_FG_CODE=0;;
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red) _KUBE_PS1_FG_CODE=1;;
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green) _KUBE_PS1_FG_CODE=2;;
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yellow) _KUBE_PS1_FG_CODE=3;;
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blue) _KUBE_PS1_FG_CODE=4;;
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magenta) _KUBE_PS1_FG_CODE=5;;
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cyan) _KUBE_PS1_FG_CODE=6;;
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white) _KUBE_PS1_FG_CODE=7;;
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# 256
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[0-9]|[1-9][0-9]|[1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-6]) _KUBE_PS1_FG_CODE="${1}";;
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*) _KUBE_PS1_FG_CODE=default
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esac
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if [[ "${_KUBE_PS1_FG_CODE}" == "default" ]]; then
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_KUBE_PS1_FG_CODE="${_KUBE_PS1_DEFAULT_FG}"
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return
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elif [[ "$(_kube_ps1_shell_type)" == "zsh" ]]; then
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_KUBE_PS1_FG_CODE="%F{$_KUBE_PS1_FG_CODE}"
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elif [[ "$(_kube_ps1_shell_type)" == "bash" ]]; then
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if tput setaf 1 &> /dev/null; then
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_KUBE_PS1_FG_CODE="$(tput setaf ${_KUBE_PS1_FG_CODE})"
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elif [[ $_KUBE_PS1_FG_CODE -ge 0 ]] && [[ $_KUBE_PS1_FG_CODE -le 256 ]]; then
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_KUBE_PS1_FG_CODE="\033[38;5;${_KUBE_PS1_FG_CODE}m"
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else
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_KUBE_PS1_FG_CODE="${_KUBE_PS1_DEFAULT_FG}"
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fi
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fi
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echo ${_KUBE_PS1_OPEN_ESC}${_KUBE_PS1_FG_CODE}${_KUBE_PS1_CLOSE_ESC}
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}
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_kube_ps1_color_bg() {
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local _KUBE_PS1_BG_CODE
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case "${1}" in
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black) _KUBE_PS1_BG_CODE=0;;
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red) _KUBE_PS1_BG_CODE=1;;
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green) _KUBE_PS1_BG_CODE=2;;
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yellow) _KUBE_PS1_BG_CODE=3;;
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blue) _KUBE_PS1_BG_CODE=4;;
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magenta) _KUBE_PS1_BG_CODE=5;;
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cyan) _KUBE_PS1_BG_CODE=6;;
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white) _KUBE_PS1_BG_CODE=7;;
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# 256
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[0-9]|[1-9][0-9]|[1][0-9][0-9]|[2][0-4][0-9]|[2][5][0-6]) _KUBE_PS1_BG_CODE="${1}";;
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*) _KUBE_PS1_BG_CODE=$'\033[0m';;
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esac
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if [[ "${_KUBE_PS1_BG_CODE}" == "default" ]]; then
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_KUBE_PS1_FG_CODE="${_KUBE_PS1_DEFAULT_BG}"
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return
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elif [[ "$(_kube_ps1_shell_type)" == "zsh" ]]; then
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_KUBE_PS1_BG_CODE="%K{$_KUBE_PS1_BG_CODE}"
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elif [[ "$(_kube_ps1_shell_type)" == "bash" ]]; then
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if tput setaf 1 &> /dev/null; then
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_KUBE_PS1_BG_CODE="$(tput setab ${_KUBE_PS1_BG_CODE})"
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elif [[ $_KUBE_PS1_BG_CODE -ge 0 ]] && [[ $_KUBE_PS1_BG_CODE -le 256 ]]; then
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_KUBE_PS1_BG_CODE="\033[48;5;${_KUBE_PS1_BG_CODE}m"
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else
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_KUBE_PS1_BG_CODE="${DEFAULT_BG}"
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fi
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fi
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echo ${_KUBE_PS1_OPEN_ESC}${_KUBE_PS1_BG_CODE}${_KUBE_PS1_CLOSE_ESC}
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}
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_kube_ps1_binary_check() {
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command -v $1 >/dev/null
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}
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_kube_ps1_symbol() {
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[[ "${KUBE_PS1_SYMBOL_ENABLE}" == false ]] && return
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case "$(_kube_ps1_shell_type)" in
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bash)
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if ((BASH_VERSINFO[0] >= 4)) && [[ $'\u2388' != "\\u2388" ]]; then
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KUBE_PS1_SYMBOL="${_KUBE_PS1_SYMBOL_DEFAULT}"
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KUBE_PS1_SYMBOL_IMG=$'\u2638\ufe0f'
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else
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KUBE_PS1_SYMBOL=$'\xE2\x8E\x88'
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KUBE_PS1_SYMBOL_IMG=$'\xE2\x98\xB8'
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fi
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;;
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zsh)
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KUBE_PS1_SYMBOL="${_KUBE_PS1_SYMBOL_DEFAULT}"
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KUBE_PS1_SYMBOL_IMG="\u2638";;
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*)
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KUBE_PS1_SYMBOL="k8s"
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esac
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if [[ "${KUBE_PS1_SYMBOL_USE_IMG}" == true ]]; then
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KUBE_PS1_SYMBOL="${KUBE_PS1_SYMBOL_IMG}"
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fi
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# OpenShift glyph
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# NOTE: this requires a patched "Nerd" font to work
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# https://www.nerdfonts.com/
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if [[ "${KUBE_PS1_SYMBOL_OC_IMG}" == true ]]; then
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KUBE_PS1_SYMBOL="${_KUBE_PS1_SYMBOL_OC}"
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fi
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if [[ "${KUBE_PS1_SYMBOL_PADDING}" == true ]]; then
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echo "${KUBE_PS1_SYMBOL} "
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else
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echo "${KUBE_PS1_SYMBOL}"
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fi
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}
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_kube_ps1_split_config() {
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type setopt >/dev/null 2>&1 && setopt SH_WORD_SPLIT
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local IFS=$1
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echo $2
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}
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_kube_ps1_file_newer_than() {
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local mtime
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local file=$1
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local check_time=$2
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if [[ "$(_kube_ps1_shell_type)" == "zsh" ]]; then
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# Use zstat '-F %s.%s' to make it compatible with low zsh version (eg: 5.0.2)
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mtime=$(zstat +mtime -F %s.%s "${file}")
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elif stat -c "%s" /dev/null &> /dev/null; then
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# GNU stat
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mtime=$(stat -L -c %Y "${file}")
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else
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# BSD stat
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mtime=$(stat -L -f %m "$file")
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fi
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[[ "${mtime}" -gt "${check_time}" ]]
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}
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_kube_ps1_prompt_update() {
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local return_code=$?
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[[ "${KUBE_PS1_ENABLED}" == "off" ]] && return $return_code
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if ! _kube_ps1_binary_check "${KUBE_PS1_BINARY}"; then
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# No ability to fetch context/namespace; display N/A.
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KUBE_PS1_CONTEXT="BINARY-N/A"
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KUBE_PS1_NAMESPACE="N/A"
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return $return_code
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fi
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if [[ "${KUBECONFIG}" != "${_KUBE_PS1_KUBECONFIG_CACHE}" ]]; then
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# User changed KUBECONFIG; unconditionally refetch.
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_KUBE_PS1_KUBECONFIG_CACHE=${KUBECONFIG}
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_kube_ps1_get_context_ns
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return $return_code
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fi
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# kubectl will read the environment variable $KUBECONFIG
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# otherwise set it to ~/.kube/config
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local conf
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local config_file_cache
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for conf in $(_kube_ps1_split_config : "${KUBECONFIG:-${HOME}/.kube/config}"); do
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[[ -r "${conf}" ]] || continue
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config_file_cache+=":${conf}"
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if _kube_ps1_file_newer_than "${conf}" "${_KUBE_PS1_LAST_TIME}"; then
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_kube_ps1_get_context_ns
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return $return_code
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fi
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done
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if [[ "${config_file_cache}" != "${_KUBE_PS1_CFGFILES_READ_CACHE}" ]]; then
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_kube_ps1_get_context_ns
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return $return_code
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fi
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return $return_code
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}
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_kube_ps1_get_context() {
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if [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]]; then
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KUBE_PS1_CONTEXT="$(${KUBE_PS1_BINARY} config current-context 2>/dev/null)"
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# Set namespace to 'N/A' if it is not defined
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KUBE_PS1_CONTEXT="${KUBE_PS1_CONTEXT:-N/A}"
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if [[ -n "${KUBE_PS1_CLUSTER_FUNCTION}" ]]; then
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KUBE_PS1_CONTEXT=$($KUBE_PS1_CLUSTER_FUNCTION $KUBE_PS1_CONTEXT)
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fi
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fi
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}
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_kube_ps1_get_ns() {
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if [[ "${KUBE_PS1_NS_ENABLE}" == true ]]; then
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KUBE_PS1_NAMESPACE="$(${KUBE_PS1_BINARY} config view --minify --output 'jsonpath={..namespace}' 2>/dev/null)"
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KUBE_PS1_NAMESPACE="${KUBE_PS1_NAMESPACE:-N/A}"
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if [[ -n "${KUBE_PS1_NAMESPACE_FUNCTION}" ]]; then
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KUBE_PS1_NAMESPACE=$($KUBE_PS1_NAMESPACE_FUNCTION $KUBE_PS1_NAMESPACE)
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fi
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fi
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}
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_kube_ps1_get_context_ns() {
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# Set the command time
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if [[ "$(_kube_ps1_shell_type)" == "bash" ]]; then
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if ((BASH_VERSINFO[0] >= 4 && BASH_VERSINFO[1] >= 2)); then
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_KUBE_PS1_LAST_TIME=$(printf '%(%s)T')
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else
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_KUBE_PS1_LAST_TIME=$(date +%s)
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fi
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elif [[ "$(_kube_ps1_shell_type)" == "zsh" ]]; then
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_KUBE_PS1_LAST_TIME=$EPOCHREALTIME
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fi
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KUBE_PS1_CONTEXT="${KUBE_PS1_CONTEXT:-N/A}"
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KUBE_PS1_NAMESPACE="${KUBE_PS1_NAMESPACE:-N/A}"
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# Cache which cfgfiles we can read in case they change.
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local conf
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_KUBE_PS1_CFGFILES_READ_CACHE=
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for conf in $(_kube_ps1_split_config : "${KUBECONFIG:-${HOME}/.kube/config}"); do
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||||||
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[[ -r $conf ]] && _KUBE_PS1_CFGFILES_READ_CACHE+=":$conf"
|
||||||
|
done
|
||||||
|
|
||||||
|
_kube_ps1_get_context
|
||||||
|
_kube_ps1_get_ns
|
||||||
|
}
|
||||||
|
|
||||||
|
# Set kube-ps1 shell defaults
|
||||||
|
_kube_ps1_init
|
||||||
|
|
||||||
|
_kubeon_usage() {
|
||||||
|
cat <<"EOF"
|
||||||
|
Toggle kube-ps1 prompt on
|
||||||
|
|
||||||
|
Usage: kubeon [-g | --global] [-h | --help]
|
||||||
|
|
||||||
|
With no arguments, turn oon kube-ps1 status for this shell instance (default).
|
||||||
|
|
||||||
|
-g --global turn on kube-ps1 status globally
|
||||||
|
-h --help print this message
|
||||||
|
EOF
|
||||||
|
}
|
||||||
|
|
||||||
|
_kubeoff_usage() {
|
||||||
|
cat <<"EOF"
|
||||||
|
Toggle kube-ps1 prompt off
|
||||||
|
|
||||||
|
Usage: kubeoff [-g | --global] [-h | --help]
|
||||||
|
|
||||||
|
With no arguments, turn off kube-ps1 status for this shell instance (default).
|
||||||
|
|
||||||
|
-g --global turn off kube-ps1 status globally
|
||||||
|
-h --help print this message
|
||||||
|
EOF
|
||||||
|
}
|
||||||
|
|
||||||
|
kubeon() {
|
||||||
|
if [[ "${1}" == '-h' || "${1}" == '--help' ]]; then
|
||||||
|
_kubeon_usage
|
||||||
|
elif [[ "${1}" == '-g' || "${1}" == '--global' ]]; then
|
||||||
|
rm -f -- "${_KUBE_PS1_DISABLE_PATH}"
|
||||||
|
elif [[ "$#" -ne 0 ]]; then
|
||||||
|
echo -e "error: unrecognized flag ${1}\\n"
|
||||||
|
_kubeon_usage
|
||||||
|
return
|
||||||
|
fi
|
||||||
|
|
||||||
|
KUBE_PS1_ENABLED=on
|
||||||
|
}
|
||||||
|
|
||||||
|
kubeoff() {
|
||||||
|
if [[ "${1}" == '-h' || "${1}" == '--help' ]]; then
|
||||||
|
_kubeoff_usage
|
||||||
|
elif [[ "${1}" == '-g' || "${1}" == '--global' ]]; then
|
||||||
|
mkdir -p -- "$(dirname "${_KUBE_PS1_DISABLE_PATH}")"
|
||||||
|
touch -- "${_KUBE_PS1_DISABLE_PATH}"
|
||||||
|
elif [[ $# -ne 0 ]]; then
|
||||||
|
echo "error: unrecognized flag ${1}" >&2
|
||||||
|
_kubeoff_usage
|
||||||
|
return
|
||||||
|
fi
|
||||||
|
|
||||||
|
KUBE_PS1_ENABLED=off
|
||||||
|
}
|
||||||
|
|
||||||
|
# Build our prompt
|
||||||
|
kube_ps1() {
|
||||||
|
[[ "${KUBE_PS1_ENABLED}" == "off" ]] && return
|
||||||
|
[[ -z "${KUBE_PS1_CONTEXT}" ]] && [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]] && return
|
||||||
|
|
||||||
|
local KUBE_PS1
|
||||||
|
local KUBE_PS1_RESET_COLOR="${_KUBE_PS1_OPEN_ESC}${_KUBE_PS1_DEFAULT_FG}${_KUBE_PS1_CLOSE_ESC}"
|
||||||
|
|
||||||
|
# Background Color
|
||||||
|
[[ -n "${KUBE_PS1_BG_COLOR}" ]] && KUBE_PS1+="$(_kube_ps1_color_bg ${KUBE_PS1_BG_COLOR})"
|
||||||
|
|
||||||
|
# Prefix
|
||||||
|
if [[ -z "${KUBE_PS1_PREFIX_COLOR:-}" ]] && [[ -n "${KUBE_PS1_PREFIX}" ]]; then
|
||||||
|
KUBE_PS1+="${KUBE_PS1_PREFIX}"
|
||||||
|
else
|
||||||
|
KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_PREFIX_COLOR)${KUBE_PS1_PREFIX}${KUBE_PS1_RESET_COLOR}"
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Symbol
|
||||||
|
if [[ "${KUBE_PS1_SYMBOL_OC_IMG}" == true ]]; then
|
||||||
|
local _KUBE_PS1_OC_SYMBOL_COLOR=red
|
||||||
|
KUBE_PS1+="$(_kube_ps1_color_fg $_KUBE_PS1_OC_SYMBOL_COLOR)$(_kube_ps1_symbol)${KUBE_PS1_RESET_COLOR}"
|
||||||
|
else
|
||||||
|
KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_SYMBOL_COLOR)$(_kube_ps1_symbol)${KUBE_PS1_RESET_COLOR}"
|
||||||
|
fi
|
||||||
|
|
||||||
|
if [[ -n "${KUBE_PS1_SEPARATOR}" ]] && [[ "${KUBE_PS1_SYMBOL_ENABLE}" == true ]]; then
|
||||||
|
KUBE_PS1+="${KUBE_PS1_SEPARATOR}"
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Context
|
||||||
|
if [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]]; then
|
||||||
|
KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_CTX_COLOR)${KUBE_PS1_CONTEXT}${KUBE_PS1_RESET_COLOR}"
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Namespace
|
||||||
|
if [[ "${KUBE_PS1_NS_ENABLE}" == true ]]; then
|
||||||
|
if [[ -n "${KUBE_PS1_DIVIDER}" ]] && [[ "${KUBE_PS1_CONTEXT_ENABLE}" == true ]]; then
|
||||||
|
KUBE_PS1+="${KUBE_PS1_DIVIDER}"
|
||||||
|
fi
|
||||||
|
KUBE_PS1+="$(_kube_ps1_color_fg ${KUBE_PS1_NS_COLOR})${KUBE_PS1_NAMESPACE}${KUBE_PS1_RESET_COLOR}"
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Suffix
|
||||||
|
if [[ -z "${KUBE_PS1_SUFFIX_COLOR:-}" ]] && [[ -n "${KUBE_PS1_SUFFIX}" ]]; then
|
||||||
|
KUBE_PS1+="${KUBE_PS1_SUFFIX}"
|
||||||
|
else
|
||||||
|
KUBE_PS1+="$(_kube_ps1_color_fg $KUBE_PS1_SUFFIX_COLOR)${KUBE_PS1_SUFFIX}${KUBE_PS1_RESET_COLOR}"
|
||||||
|
fi
|
||||||
|
|
||||||
|
# Close Background color if defined
|
||||||
|
[[ -n "${KUBE_PS1_BG_COLOR}" ]] && KUBE_PS1+="${_KUBE_PS1_OPEN_ESC}${_KUBE_PS1_DEFAULT_BG}${_KUBE_PS1_CLOSE_ESC}"
|
||||||
|
|
||||||
|
echo "${KUBE_PS1}"
|
||||||
|
}
|
||||||
Loading…
Reference in a new issue