Linux

1.Linux strictly case-sensitiveAll content in 2.Linux is saved as a file, including hardwareHard disk File /dev/sd[a-p]CD-ROM file when /dev/sr0 etc.3.Linux does not differentiate file types by extension, but we often add extensions to differentiate

Formatting and mountingA hard disk to be used, to be partitioned, formatted, mount these three steps. Earlier we talked about MBR partitioning and GPT partitioning.Let's talk about it. If a partition is formatted. In fact it is very simple, a word

has been used in the college room of the Linux system, a variety of commands can be used directly, but they installed a centOS5.4 after the discovery ifconfig,service these/sbin directory commands can not be used directly, but the/bin directory

Sed is an online editor that processes a single line of content at a time. When processing, the currently processed rows are stored in a temporary buffer called pattern space, followed by the SED command to process the contents of the buffer, and

Mkdir[function]: command used to create a directory of the specified name, requiring the user who created the directory to have write permissions in the current directory, and the specified directory name cannot be a directory that is already in the

Centos6.7 compile and install Apache PHP and centos6.7apache Centos6.7 compile and install Apache PHP ##### Apache compilation and installation #### [root@localhost ~]# yum install gcc gcc-c++ make wget[root@localhost ~]# yum install zlib-devel

Partitions, formatting, and mounting of new hard disks in Linux Partition, formatting, and mounting of new hard disks in Linux This tutorial describes how to mount a new hard disk in Linux. For more information about how to mount a new hard disk in

Shell script learning notes ----- if, for, while, case statement, ----- ifcase 1. The judgment conditions in if are logical operations: 2. if, check whether the directory exists and whether the file exists. Check whether the/home/monster

In Linux, jetty reports the java. lang. OutOfMemoryError: PermGen space and Jetty memory configuration optimization solution.Jetty in Linux reports java. lang. OutOfMemoryError: PermGen space and Jetty memory configuration optimization

Monitor linux traffic for shellIf you want to view linux traffic in real time and do not want to go to a third-party tool, you can directly write and run it! System: centos 6.5 principle: Get the traffic from/proc/net/dev, and then get the traffic

Nginx + keepalive1. planning and preparation Two web servers with the same configuration Purpose IP MASTER 192.168.1.100 BACKUP 191000081.101 2. Install NginX and keepalived on the two access

How to seamlessly connect Kitematic and DockerCLI Introduction Kitematic is a Docker GUI tool that can run Docker more quickly and easily on Mac and Windows. Docker officially said that Kitematic is a great project that has grown up in its ecosystem.

Distributed File System FastDFS deployment I. Introduction FastDFS is an open-source distributed file system similar to Google FS. It is implemented in pure C language and supports Linux, FreeBSD, AIX, and other UNIX systems. It can only access

Judge whether the Linux server architecture is 32-bit/64-bit As a novice Unix system user, how can I determine that my Unix server is installed with a 32-bit or 64-bit operating system? You can use the following command to obtain information about

How to install Hadoop in CentOS7 Hadoop is a distributed system infrastructure that allows users to develop distributed programs without understanding the details of the distributed underlying layer. Important core of Hadoop: HDFS and MapReduce.

Use GlusterFS for Distributed Storage deployment GlusterFS is a very easy-to-use distributed file storage system that implements all standard POSIX interfaces and uses fuse for virtualization, making users look like local disks. Therefore, the

Complete steps for installing Hadoop2.7 on centos 7 The general idea is to prepare a master-slave server, configure the master server to log on to the slave server without a password, decompress and install JDK, decompress and install Hadoop, and

Hadoop distributed installation and cluster configuration notes Machine and role information: There are 10 machines in total. hostname and IP address ing are not described here. This is a development environment installation, so you do not need to

Ceph performance optimization Summary (v0.94) Recently, I have been busy with Ceph storage optimization and testing. I have read a variety of materials, but I don't seem to have an article explaining the methodology clearly. So I would like to make

DRBD principles and features Distributed Replicated Block Device (DRBD) is a software-implemented, non-shared, storage and replication solution for image Block Device content between servers. Its core functions are implemented through the Linux