Linux

103 Linux Important Sub-directory description/etc/sysconfig/net-scripts/ifcfg-eth01) Restart the NIC/etc/init.d/network restart2) ifdown eth0 && ifup eth0 only for Eth0 NIC, modified via setup network configurationdevice=eth0 Physical

1. Conclusion:The SAR command is a common tool for analyzing system performance on Linux systems, and can be used to view CPU, memory, disk IO, file read and write, system calls,2, the SAR will have a scheduled task, regularly record the current

Nohup/root/start.sh &Prompt after carriage return in shell:[~]$ appending output to Nohup.outThe standard output of the original program is automatically redirected to the Nohup.out file in the current directory, which plays the role of log.After

Scheduled TasksOne-time Scheduled tasksCyclic Scheduled Tasks一次性的计划任务安装软件： #yum install at -y启动服务： # systemctl start atd.service # systemctl status atd.service # systemctl enable atd.service创建计划任务： # at 11:00 at> rm -rf /tmp/*

Prerequisites: Installation of VM virtual machines. Image file for Contes system1: Create a new virtual machine2: Next, install the operating system later3: Select the corresponding system4: Select the corresponding pathThe virtual machine has been

Servers on-line sometimes need to limit the number of user logons. This function can be implemented by Pam's pam_tally2.so module.Pam module is a kind of authentication mechanism proposed by sunpam_tally2.so ModuleOne. Format pam_tally2.so [

? Cat Viewing files0 There is no visible content: Cat-a file0 line number: Cat-n file blank line plus number0 line number: Cat-b file blank line is not numbered0 compressing adjacent empty lines: Cat-ns file0 Inverted display: TAC file? More/less0

Modifying a configuration fileModify the/etc/mail.rc, add the following lines, specify the external SMTP server address, account password, and so on.Vi/etc/mail.rcset [email protected]set smtp=smtp.163.com 对应的邮箱服务即可set smtp-auth-user=123456 set

Linux Common Command DaquanSystem InformationThe processor architecture of the Arch Display machine (1)UNAME-M Display the processor architecture of the machine (2)Uname-r displaying the kernel version in useDMIDECODE-Q Display hardware system

Bash basic features (2) I. Alias of the command (alias) Alias can simplify the complex commands to improve the efficiency of the work. For example, the "Ls-l" Alias becomes "ll" by default in the system. Managing Commands with Alias

The Linux du command also looks at the use of space, but unlike the DF command, the Linux du command is to see whether the currently specified file or directory (recursively displaying subdirectories) consumes disk space or is somewhat different

IP [OPTIONS] OBJECT {COMMAND | help}This command contains almost all the methods of use, whereObject object={link | addr | addrlabel | route | rule | neigh | ntable | tunnel | maddr | mroute | mrule | monitor | xfrm | to Ken}Option

Document Time: 2018-08-25Cross compiler: arm-linux-gcc-4.3.2Ubuntu version: 16.04Kernel version: linux-3.191, DM9000 NIC driver with ported kernelUsing the previously crafted Uboot,kernel and file system, set the Machid to 0X16A (SMDK2440) at the

I. Description of UseVmstat can monitor the operating system's memory information, process status, CPU activity, disk and other information, the disadvantage is that a process cannot be analyzed in depth.II. Usage and parameter description -

1. Linux ArchitectureThe address space of the Linux system is divided into user space and kernel space, which can be transferred from user space to kernel space through system call and hardware interrupt.2. System Call Interface① Generally, user

1. The overall structure of the Linux kernel is very large and contains many components, using these components in two ways:① directly into the kernel file, either Zimage or bzimage (problem: excessive memory consumption)② Dynamic Additions* The

The meaning of the 1.Linux file system To mount a disk is to put the disk in a directory Bin directory is a command to place a normal user The commands in the Sbin directory are only available to administrators The boot directory is the

BackgroundA complex password is required for each login, and no one is trying to log in to the root account. Feel flustered, so you have to set a more secure way to log in.Configuring SSH password-free login takes 4 steps Preparatory work

February 05, 2018 11:02:17 read: 851 1, how to build the jar package can refer to the following link: http://blog.csdn.net/zk0920zk/article/details/792307072, next talk about how to upload files to Linux via Windows batAdd Windows Batcht Code

Directly on the technology!The first thing to understand is what is SMB used for?It is only an experiment to ping the virtual machine VMS and the real machines behind them.The Linux version used here is Redhat 7.4One, SMB configurationNote: Here we