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Practice content 1. Install centos VI / etc / sysconfig / network scripts / ifcfg-ens33 modify the network configuration file BOOTPROTO=static IPADDR=192.168.100.128~200 Virtual machine IP Address. The last bit is between 128 and 200 NETMASK=255.255.255.0 Subnet mask GATEWAY=192.168.100.2 Default gateway ...

Deep understanding of Linux file system and log analysis 1, inode and block overview File data includes meta information and actual data Files are stored on the hard disk. The minimum storage unit of the hard disk is "sector", and each sector stores 512 bytes Block Eight consecutive sectors form a block Is the smallest u ...

1, Introduction to file system File system: it is the method and data structure used by the operating system to specify the files on the disk or partition, that is, the method of organizing files on the disk. Linux file system is a complete unity, organized into a tree directory structure. Linux follows the file system scientific classificatio ...

introduce The Linux kernel was originally written by Finnish Linus Torvalds as a hobby when he was studying at the University of Helsinki. Linux is a UNIX like operating system that is free to use and spread. It is a multi-user, multi task, multi thread and multi CPU operating system based on POSIX and UNIX. Linux can run the main UNIX tools, ...

1. ps process to view the instantaneous process status (use the top command to view the real-time process) ps supports three formats of commands 1) Unix style, options start with -. 2) BSD style, options cannot start with -. 3) GNU long option, which starts with -. Commands of the three formats can be mixed, but there may be conflicts. Use eac ...

This article introduces the operation parameters of Docker, including the operation commands for container, image and registry. Tips: This article comes from Learn Docker + K8S from BAT technical experts special column. 1. Container operation Common operation commands related to Docker and container are as follows: run docker run is u ...

preface This paper describes the stack backtracking process with libunwind library. libunwind stack backtracking process Libunwind contains two sets of user interfaces, each prefixed with unw_ And_ Unwind ID, where_ The unwind prefix interface is a high-level function interface for C + + exception handling, and the unw prefix is a more gener ...

Linux three swordsmen - sed describe sed - stream editor for filtering and transforming text； sed is the abbreviation of stream editor, that is, stream editor, which reads the whole file and modifies each line by default; Mode of use Command syntax sed [option] '[line locator] instruction' file name Command | sed [options] '[line loc ...

NFS brief introduction NFS (Network File System), namely Network File System, is one of the file systems supported by FreeBSD. It allows computers in the network to share resources through TCP/IP network. In NFS applications, local NFS client applications can transparently read and write files on remote NFS servers, just like accessing l ...

Openssh 1, Introduction to Openssh OpenSSH is a free open source implementation of SSH (Secure SHell) protocol. SSH protocol family can be used for remote control or transfer files between computers. The traditional methods to realize this function, such as telnet (terminal emulation protocol), RCP, FTP, rlogin and rsh, are extremely insecure, ...