今天离线安装K8s，脚本中有使用到遍历数组。
复习一下shell数组的使用。
数组:
- A=(a b c d)
引用数组:
- ${A[@]}
- ${A[*]}
访问数组成员
- ${A[0]}
- ${#A[@]}
- ${#A[*]}
数组重新赋值
- A[2]=xyz
如何遍历数组实例:
tee ./images.sh <<-'EOF' #!/bin/bash images=( registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/kube-apiserver:v1.20.9 registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/kube-proxy:v1.20.9 registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/kube-controller-manager:v1.20.9 registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/kube-scheduler:v1.20.9 registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/coredns:1.7.0 registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/etcd:3.4.13-0 registry.cn-hangzhou.aliyuncs.com/lfy_k8s_images/pause:3.2 calico/cni:v3.22.1 calico/pod2daemon-flexvol:v3.22.1 calico/node:v3.22.1 calico/kube-controllers:v3.22.1 kubernetesui/dashboard:v2.3.1 kubernetesui/metrics-scraper:v1.0.6 ) for imageName in ${images[@]} ; do docker save -o $imageName.docker $imageName done EOF
