busybox

busybox_bin=/sbin/busybox# Get Pipeget_outfd () {if$busybox _binls-l/proc/self/fd/ +| $busybox _bingrep-Q'Pipe'; Then Echo + ElseLocal All_pipe_file=/tmp/all_pipe_file.txt $busybox _binls-l/proc/self/fd/>$all _pipe_file $busybox _bingrep 'Pipe:'$all _pipe_file | $

Create a linux system running in the memory-general Linux technology-Linux programming and kernel information. The following is a detailed description. Background: Generally, during the linux system startup process, the bootloader written on the MBR loads the kernel and then loads the initial environment, that is, initrd. In initrd, generally, there is a script (or ELF File) called init or linuxrc. After the process is started, it will first read the content under/etc/inittab. This is an initial

into a file by using the Linux Source Code makeMenuconfig, then choose initial Ram filesystem and RAM disk (initramfs/initrd) support, enter our initramfs directory in initramfs source file (s), and then make bzimage.In this way, the kernel has only one file, and you do not need to specify initramfs. Next we will introduce them in sequence: Experiment 1: Create a traditional initrd 1. Static compilation of busybox to generate the _ install directory

first-etcd-Key Hello World On core-02, you can read the value corresponding to first-etcd-key: [Email protected] ~ $ Etcdctl get first-etcd-Key Hello World You can also directly provide an API to read the corresponding key: [Email protected] ~ $ Curl-l http: // 127.0.0.1: 4001/V1/keys/first-etcd-Key { Quot; Action quot;: quot; get quot;, quot; Key quot;: quot;/first-etcd-Key quot;, quot; Value quot;: quot; Hello World quot;, quot; index quot;: 2264} Use fleetctl to manage service

1. Create a directory (1) mkdir busybox-rootfs CD busybox-rootfs Mkdir bin Dev etc home lib MNT opt proc root sbin sys tmp usr VaR (2) Compile commands and library files compiled from busybox into the corresponding folder. (3) configure the inittab file under the etc directory : Sysinit:/etc/init. d/rc. s : Once:/usr/sbin/telnetd : Respawn:/sbin/Getty-l ttys0 115

Kubelet nodes in the cluster need to be modified# grep ‘KUBELET_ADDRESS‘ /etc/kubernetes/kubelet KUBELET_ADDRESS="--address=192.168.115.5 --cluster-dns=10.254.16.254 --cluster-domain=cluster.local"# systemctl restart kubeletV. Run a busybox and curl for testing# cat busybox.yaml apiVersion: v1kind: Podmetadata: name: busyboxspec: containers: - name: busybox image: docker.io/

principle is: Linux call so library files, the search path is the current path, and then the system Lib directory. However, a ld_preload system variable is provided to change this order. When the ld_preload is set, the order in which the libraries are loaded is changed to: The search path is: ld_preload, current path, and then system Lib directoryOf course, this is not the solution, you can also use the online recommendation of another method BusyBox