How to Restore the Misdeleted tree Command

Examine the usage of RPM and yum 1. Delete the tree command, the tree command is not available [root@centos7 ~]# which tree /usr/bin/tree [root@centos7 ~]# rm -f /usr/bin/tree [root@centos7 ~]# tree . bash: tree: command not found... 2. Direct yum or rpm installation will prompt tree to be installed [root@centos7 ~]# yum install tree Loaded ...

Posted on Fri, 11 Oct 2019 13:55:15 -0700 by Double_M

KVM Virtualization Foundation Management in Cent os 7

Bowen outline: 1. Installing kvm virtualization; Second, manually change the configuration file, clone web01 and generate a new virtual machine web02. 3. What are the similarities and differences between web01 and web02? Fourth, two methods of remote connection of virtual machine; 5. Use the default NAT network type to enable web02 to ping o ...

Posted on Wed, 09 Oct 2019 16:46:52 -0700 by snrecords

Installing the kubernetes cluster

Installing the kubernetes cluster using kubeasz kubeasz github https://github.com/easzlab/kubeasz Configuration: 4 core 8GB memory (only master role 2G memory) System: CentOS-7.6 1810 Minimal Be careful: 1. Ensure system time is normal before installation. 2. All commands need to be executed at the deployment node (192.168.2.71) 3. Simpl ...

Posted on Wed, 09 Oct 2019 01:33:48 -0700 by Saeven

vsftpd virtual user

I. Turn off SElinux setenforce 0 Installation of vsftpd service 2.1 Install vsftpd with yum yum -y install vsftpd 2.2 Backup vsftpd master configuration file cp /etc/vsftpd/vsftpd.conf{,.bak} Configuring vsftpd services accessed by virtual users: 3.1 Create Virtual User Password File vim /etc/vsftpd/vir_user 3.2 Generating Virtual User Datab ...

Posted on Tue, 08 Oct 2019 18:07:01 -0700 by brax23

Linux System: Building Nginx and FastDFS File Management Middleware under centos7

This article source code: GitHub. Click here || GitEE. Click here Introduction to FastDFS 1. Basic concepts FastDFS is an open source lightweight distributed file system. It manages files. Its functions include file storage, file synchronization, file upload, file download and so on. It solves the problems of large capacity storage and load ba ...

Posted on Mon, 07 Oct 2019 03:06:37 -0700 by chanchelkumar

Zabbix monitoring system series twelve: SNMP Traps active alarm

SNMPTrap monitoring is mainly used to monitor the active notification of equipment failure, such as storage monitoring of hard disk failure, network monitoring jitter. The overall process description is as follows: 1. The monitored object sends SNMPTrap information to the snmptrapd(Net-SNMP) server. 2. ...

Posted on Fri, 04 Oct 2019 13:55:33 -0700 by rolajaz

Linux Installation nfs Shared Files

Introduction nfs NFS network file system is often used to share static resources such as audio, video, pictures and so on. Shared resources will be placed in the shared directory of NFS and accessed through server mount. Server installation: yum install -y nfs-utils rpcbind perhaps yum install -y nfs-utils yum install -y rpcbind Client installa ...

Posted on Fri, 04 Oct 2019 13:19:26 -0700 by hyp0r

One-line command to install docker and docker-compose(CentOS7)

Want to install docker and docker-compose quickly? Then follow this article with a copy and paste to complete the installation: environmental information Operating System: CentOS Linux release 7.7.1908 (Core, Operating Account: root Docker Version: Current Latest Version: 19.03.2 docker-compose version: current latest version: 1.24.1 install ...

Posted on Fri, 04 Oct 2019 06:41:00 -0700 by jarvis

RPM Installation of Oracle 19c on OL7.6

Setting Host Name [root@localhost ~]# cat /etc/hosts 127.0.0.1 localhost localhost.localdomain localhost4 localhost4.localdomain4 ::1 localhost localhost.localdomain localhost6 localhost6.localdomain6 10.0.0.11 study1.localdomain study1 [root@localhost ~]# cat /etc/hostname study1.localdomain Installation Environment Preparatory To ...

Posted on Thu, 03 Oct 2019 04:02:11 -0700 by netdog

xargs,rename,awk,cut,seq,bc,cal

Article directory xargs command rename command awk command cut command seq command bc command cal command last, lastlog command xargs command [root@oldboyedu oldboy]# cat file a b c d e f g h i j k l m n o p q r s t u v w x y z [root@oldboyedu oldboy]# cat file | xargs a b c d e f g h i j k ...

Posted on Thu, 03 Oct 2019 03:42:31 -0700 by yanti