Linux cat EOF保持缩进并解释变量
使用“EOF”,它可以保持缩进,但不能解释变量Linux cat EOF保持缩进并解释变量,linux,eof,cat,Linux,Eof,Cat,使用“EOF”,它可以保持缩进,但不能解释变量 [root@master ~]# registry=10.105.100.4/library [root@master ~]# cat > /etc/sysconfig/kubelet << 'EOF' > KUBELET_EXTRA_ARGS=--pod-infra-container-image=${registry}/pause:3.1 \ > --runtime-cgrou
[root@master ~]# registry=10.105.100.4/library
[root@master ~]# cat > /etc/sysconfig/kubelet << 'EOF'
> KUBELET_EXTRA_ARGS=--pod-infra-container-image=${registry}/pause:3.1 \
> --runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice \
> --feature-gates=LocalStorageCapacityIsolation=true \
> --kube-reserved-cgroup=/kubepods.slice --kube-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi \
> --system-reserved-cgroup=/system.slice --system-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi \
> --eviction-hard=memory.available<500Mi,nodefs.available<10% \
> --max-pods=250
> EOF
[root@master ~]# cat /etc/sysconfig/kubelet
KUBELET_EXTRA_ARGS=--pod-infra-container-image=${registry}/pause:3.1 \
--runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice \
--feature-gates=LocalStorageCapacityIsolation=true \
--kube-reserved-cgroup=/kubepods.slice --kube-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi \
--system-reserved-cgroup=/system.slice --system-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi \
--eviction-hard=memory.available<500Mi,nodefs.available<10% \
--max-pods=250
只需使用EOF,它可以解释变量,但不能保持缩进
[root@master ~]# registry=10.105.100.4/library
[root@master ~]# cat > /etc/sysconfig/kubelet << EOF
> KUBELET_EXTRA_ARGS=--pod-infra-container-image=${registry}/pause:3.1 \
> --runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice \
> --feature-gates=LocalStorageCapacityIsolation=true \
> --kube-reserved-cgroup=/kubepods.slice --kube-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi \
> --system-reserved-cgroup=/system.slice --system-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi \
> --eviction-hard=memory.available<500Mi,nodefs.available<10% \
> --max-pods=250
> EOF
[root@master ~]# cat /etc/sysconfig/kubelet
KUBELET_EXTRA_ARGS=--pod-infra-container-image=10.105.100.4/library/pause:3.1 --runtime-cgroups=/systemd/system.slice --kubelet-cgroups=/systemd/system.slice --feature-gates=LocalStorageCapacityIsolation=true --kube-reserved-cgroup=/kubepods.slice --kube-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi --system-reserved-cgroup=/system.slice --system-reserved=cpu=500m,memory=500Mi,ephemeral-storage=1Gi --eviction-hard=memory.available<500Mi,nodefs.available<10% --max-pods=250
[root@master ~]#
有没有办法让两者同时生效?在使用bash和zsh测试的行末尾,您必须避开反斜杠;我假设其他外壳与此类似:
$ cat > foo.txt <<EOF
line 1 \\
line 2
EOF
$ cat foo.txt
line 1 \
line 2