[系统运维]Linux 如何遍历数组？

数组:

• A=(a b c d)

引用数组:

• ${A[@]}
• ${A[*]}

访问数组成员

• ${A[0]}

计算数组长度

• ${#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