linux rhcsa

Using SSH to transfer files between Linux and Linux,linux and WindowsTransferring files between Linux and Linux:SCP file [email protected]: Document Address Example:SCP Abc.txt [Email protected]:/home/endall/abc.txtTransferring files between Windows and Linux:The author uses Putty's built-in PSCP. Other such as SSH Sec

Linux knowledge point Review: single-user mode, rescue mode, clone Virtual Machine and Linux machine logon explanation, linux knowledge point1.13 single-user mode In linux, when the password is forgotten, the password is changed (prerequisite: the password must be manually operated on a physical machine or server) At t

[Linux] C language Linux system programming creation process, linux 1. process ID Each process is represented by a unique identifier, namely, the process ID (pid). The system ensures that each pid is unique at a certain time. 1.1 allocate process ID By default, the kernel limits the maximum process ID to 32768. You can set/proc/sys/kernel/pid_max here. In a short

[Linux] C language Linux system programming-11 TCP communication statuses, linux-tcp Three-way handshakeThe client initiates a SYN request, and the client is in the SYN_SENT State (the first handshake)After the server receives the message, it changes from LISTEN to SYN_REVD and replies to the client. After the client receives the response, it is in the state of

[Linux] Linux commands for counting folders and files, and linux statistics # View the number of files in the current directory (excluding files in subdirectories) Ls-l | grep "^-" | wc-l # View the number of files in the current directory (including files in sub-Directories) Note: R, representing sub-Directories Ls-lR | grep "^-" | wc-l # View the number of

maintenanceBadblocksCfdiskDdE2fsckExt2edFsckFsck. minixFsconfFdformatHdparmMformatMkbootdiskMkdosfsMke2fsMkfs. ext2Mkfs. msdosMkinitrdMkisofsMkswapMpartitionSwaponSymlinksSyncMbadblocksMkfs. minixFsck. ext2FdiskLosetupMkfsSfdiskSwapoff8. Network communicationApachectlArpwatchDipGettyMingettyUuxTelnetUulogUustatPpp-offNetconfigNcHttpdIfconfigMinicomMesgDnsconfWallNetstatPingPppstatsSambaSetserialTalkTracerouteTtyNewaliasesUunameNetconfWriteStatserialEfaxPppsetupTcpdumpYtalkCuSmbdTestparmSmbclien

Start to learn linux common commands in detail and stick to one command every day, so this series is a linux command every day. The main reference materials for learning are: 1 "laruence's linux private House dish" 2 http: codingstandardsiteyecomblog7866533linux command 5 Start to learn linux common commands in detail

Linux entry record: 16. Multi-command collaboration in Linux: pipelines and redirection, linux redirectionI. Multi-command collaboration In Linux, most commands are very simple, and there are few complex functional commands. Each command often only implements one or more simple functions. By combining commands of diffe

[Linux] The local and server files are uploaded and downloaded, Linux server files are uploaded and downloaded, and linux Files are uploaded. I. File Transfer in Linux and scp command instance 1. Directory replication in Linux: Local> Remote Server Scp-r/home/abc/test1 root@

[Linux] install Nginx on Linux and nginx on linux This article describes how to install Nginx in Linux. the Linux system is CentOS 7.2. 1. Download Nginx from the official Nginx website. The version used here is 1.13.6. 2. Upload the downloaded Nginx to

Terminal logout exit Terminal exit Exit Ctrl+u the end of the ctrl+d to delete the next ctrl+e move to the end of CTRL + a move to the front ctrl+k delete the four after the cursor, statstat to view the file details[[Email protected]1]# stat/root/1/1. Txt.bak.bak File: '/root/1/1. Txt.bak.bak ' Size:0Blocks:0IO Block:4096Regular Empty filedevice:ca01h/51713d Inode:158242Links:2Access: (0644/-rw-r--r--) Uid: (0/root) Gid: (1003/Ruanwenwu) Access: .-Ten- - A: -:06.221000000+0800Modify: .-Ten- -

Linux system add root certificate linux Certificate Trust List, linux Certificate 1. https certificate access in linux [root@boss-test-dev001-jydx~]#curl-vhttps://mobile.mycard520.com.tw*Abouttoconnect()tomobile.mycard520.com.twport443(#0)*Trying220.130.127.122...connected*Connectedtomobile.mycard520.com.tw(220.130.127

System callsis a soft interrupt, API function, let the upper application fall into the kernelProcess ManagementProcess scheduling, scheduling algorithm, process three-stateProcess is the minimum unit fork for CPU scheduling resourcesVFS Virtual File ManagementUnder Linux, all the devices are filesDriver Bus Model 2.4 2.6 (TRUE) Support PnPExt3 ext2 vfat File Management system----> Driver Development under the driver bus modelMemory managementProcess l

Programmers are lazy, you know. Recently in development, you need to use the server's IP and Mac information. But the server is installed on the Linux system, for the multiple network, in the acquisition of IP generated a lot of problems. The following is a method for Java to obtain a local IP on a Windows system. Paste Code: Package com.herman.test; Import java.net.InetAddress; /** * @see get computer IP * @author herman.xiong * @date May 16, 20

"My Linux, I am the Master" My Little story with LinuxAgain late at night without sleep, just see this activity, my thoughts immediately back to the university era, a no longer back to the good times.The first statement is that I am not a great God, at least not at present. It's just one of many Linux learning armies.First knowledge of LinuxThe first time I heard that the word

One, beware the Linux virus At the beginning of Linux, because of its original excellent design, seems to have innate virus immunity, so many people believe that there will be no virus for Linux to appear, but Linux is finally no exception. In the autumn of 1996, an Australian organization called Vlad in assembly lang

Summary of the basic operations of Linux, basic operations of linux Preface Linux was a UNIX-compatible operating system developed in 1991 and can be used for free. Its source code can be freely transmitted and can be modified, enriched, and developed by anyone, the original intention of developers is to jointly create a perfect, ideal and free-to-use operating s

Linux overview Linux is a free-of-charge and freely-spread Unix-like operating system. it is mainly used on computers based on Intelx86 series CPUs. The core program (kernel) that controls the basic services of the entire system is developed by Linus. The Linux name is Linus amp; rsquo... Linux overview

Linux Directory Architecture /root directory /bin commonly used commands binary file's catalogue /boot store files that must be read when the system is started, including the core (kernel) /boot/grub/menu.lst Grub Settings /boot/vmlinuz kernel RAM Disk required for/BOOT/INITRD core decompression /dev System Peripheral Equipment /ETC System Related setup file /etc/dir_colors Set Color /etc/hostname set the user's node name /etc/networking only yes indi

New users talk about Linux, new users linux Directory: What is Linux? Differences between Linux and UNIX Comparison between Linux and Windows What is the Linux release? Linux applicatio