Linux

File and directory operations (40 commands)1.ls"Command Action" lists the contents of a file or directory"Command Syntax" ls [options] [parameters]"Common Options"-C Multi-column displays the listed files and content (default option)1 single-column

There's a programmer in the office today. Sister Bird, small fish is to her assigned tutor, first meet ~Lunch timeLinux directory structureresolv.conf fileNameServerThe only required keyword. Indicates the IP address of the DNS server, which can

1, the basic use of the FIREWALLD start: Systemctl start Firewalld view state: Systemctl status Firewalld stop: Systemctl disable FIREWALLD disabled: systemct L Stop Firewalld 2.systemctl is the primary tool in the CENTOS7 Service Management tool

1. Delete files in SVN repository directly--SVN delete path-m "Delete test Fle"Example: SVN delete svn://10.1.1.227/bank/ld_sys/pubtags/v1.1.1/update/list/ld_sys.list-m "Delete the list file"2. Delete the file locally and submit it to the SVN

Linux task_struct is used to control the management process, the structure is as follows: struct TASK_STRUCT {//Indicates whether the process can be executed, or can be interrupted and other information volatile long state; Flage is the process

First, the overall function of the introductionThis is a Linux-kernel-0.11 description of the source file under the Boot folder bootsect.s , which involves some basic knowledge that can be referenced in these two articles. Operating system

## If you want the Ram-disk device, define the# Size in blocks.# If you want to use RAM to define the size of the block (commented out), this is a compile-time parameter, if defined below will be used. RAMDISK=#-dramdisk=512AS86=as86-0-a

Introduction of a LVS IP tunnel modeIP tunneling (IP tunneling) is the technique of encapsulating an IP message in another IP packet, which enables a packet of data that is targeted for one IP address to be encapsulated and forwarded to another IP

User Management Add UsersUseradd or AddUser. Actually AddUser is a soft connection of useradd. Take Useradd as an example, with the usage of useradd [option] USERNAME[email protected] ~]# ll ' which AddUser ' lrwxrwxrwx. 1 root root 7 May 14:21/usr/

SshSSH: Secure remote LoginUser login authentication in two waysBased on PassworkBased on keyClientCommon client Tools are: Windows version of Putty, SecureCRT, xshell;linux with SSH, SFTP, SCP, slogin, etc.Configuration file:/etc/ssh/ssh_configSSH

Linux Regular expressions1. CompositionNormal character: normal string, no special meaningSpecial characters: have special meanings in regular expressionsCommon meta-character "special characters" in regular expressions2, POSIX BRE "basic" and ere

Source: Linux Community PvbutlerFirst, the question:When creating a file in the/data partition of a Linux server, the system prompts for insufficient disk space, uses the df-h command to view the disk usage, finds that the/data partition uses only 66

1. First, we enter the PWD command to view the current user directory:Current user is xg which I explained [[email protected] ~]$ this meaning, where xg refers to the current user, localhost refers to the hostname, ~ refers to the current directory,

CENTOS6 system Start-up process1. Post power-on self-test check hardware environment2. Select a hardware type boot boot MBR 446 bytes Grub Stage13. Loading boot partition file system driver hangs in/boot directory grub stage1.54. read/boot/grub/grub.

LVM (Logical Volume Manager) is a logical mechanism for managing disk partitions in a Linux system, a logical layer built on disk and partition, capable of dynamically adjusting disk capacity while keeping existing data intact, thus increasing the

1. Installing ErlangInstall dependent environmentsYum-y install make GCC gcc-c++ kernel-devel M4 ncurses-devel openssl-devel Unixodbc-develDownload the latest Erlang 19.0wget http://erlang.org/download/otp_src_19.0.tar.gzExtractTar-xvzf otp_src_19.0.

A thorough understanding of the Linux startup process is a key point of knowledge, and only when this is known will it be very cool and quick to debug in the event of a system-level error at Linux.The first phase of the Linux startup process

In a recent project, you need to copy some of the files under Linux. After inserting a USB stick, it is read-only mode.The USB stick can be written out and not writable.Toss a turn:Finally, this solves the following:Insert a USB flash drive under

1. Break root password and set protection for grub1). Enter single-user mode using the "E" button in the GRUB boot menu to enter the CentOS boot menu to the interface, move the cursor to the "kernel" configuration item line, add single,ctrl+x at the

1. View the process: Ps-ef or Ps-aux2. View network status: Ifconfig3. Filter: grep filter content file path (filter content under the change file)Grep-r Filtering the content path (filtering the contents of the path)4. Dynamic display of the most