Linux

Preface: Probably February 5, 2017 formally participated in the Itoo test group, before due to the progress of the problem, missed such a chance to exercise their own, now very happy to get such a chance. Itoo Test group is divided into two groups,

For the convenience of reading code, there are usually two requirements: 1 reading only the code that defines a macro, and 2 reading only code that does not define a macro. Linux provides the UNIFDEF tools below. Specific installation and use are

Linux Startup Linux Services First into the bin directory under the Tomcat home directory 1, direct start:./startup.sh 2. Start as service: Nohup./startup.sh & (Execute startup.sh, and save log to Nohup.out folder) 3, the dynamic output mode of

Https://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/Documentation/lockstat.txt LOCK Statistics-what As the name suggests, it provides STATISTICS on locks. -WHY because things like lock contention can severely impact performance.

Author: bullbat In the Linux kernel, a page-based approach is not always used to assume a cached task. Earlier versions of the kernel contained only block caching to speed file operations and improve system performance. This is a legacy from other

Linux is just a personal hobby, before a little touch, the school of this part of the learning arrangements in the next semester, and they are now ready to practice, many companies on the operating system and Linux inspection is more, whether in the

First, create separate source files for two functions (name FRED.C and BILL.C respectively). The following first source file: #include "stdio.h" void Fred (int arg) { printf ("Fred:we passed%d\n", ARG); } Here is the second source file: #include

Machine Preparation A: Control the machine, own machineB: remote machine, 192.168.55.12 step in a machine input the following command, in the pop-up three selection of the generated key in all set to NULL, direct hit Enter SSH-KEYGEN-T RSA In a

First, use the process to view Command Ps-aux | grep xxx is to see if a process or service exists. Using the Chkconfig Configuration tool chkconfig--list can list the default startup status of SysV and Xinet services in each runlevel. Iii. Use of

Head command:The contents of the first number of rows or bytes used to view the contents of the file.Command parameters:-C is used to get the first number of bytes of content, but also add units, the default is bytes.-N is used to get the front

>>> Failure Phenomena:Virtual machine not connected to extranet?>>> Failure Background:Centos7.4 Release version:Both the virtual machine and ">The VM software are NAT modes:">Note Here the default VMware DHCP service is turned on: (But the IP of

DateSystem Time   Clock Viewing hardware timeclock-w or Clock--SYSTOHC synchronizing system time to hardware timeclock-s or Clock--hctosys Synchronizing hardware trial teaching to system timeCal View CalendarBC Simple CalculatorW.H.O. ( WhoAmI , Who

Useradd account name-M add accountSU account name switch accountsudo passwd account name change passwordWhoAmI Current UserSSH user name @ip address remote controlCAT/ETC/PASSWD to see if the creation was successfulWho is currently logged insudo

Due to the frequent work with the Linux server to deal with, it has compiled a number of commonly used Linux commands, to facilitate the new students or interns reference study.1. View the Linux kernel version#uname-A2. Ctrl+insert: Copy the

View processes under Linux with Ps-ef|grep XXXWhen viewing process information through the PS and top commands, you can only find the relative path, the details of the process not found, such as the absolute path. At this point, we need to see the

1. Environmental preparedness以用户名[[email protected] ~] ip：192.168.24.181/24为服务端以用户名[[email protected] ~] ip：192.168.24.132/24为客户端Server-side configuration 2. Basic Environment configuration Shutdown FIREWALLD Firewall[[email protected] ~]# systemctl

File system Popular is the way files are organized on diskLinux supports multiple file systems: ext3 ext4 ZFS iso9660 msdos NFS, etc.Super Block Superblock I node inode data blocks data Block directories directory blockDisk partition Create file

Modify the cue line to enter directory to create yanse.sh nano yanse.sh Modify color command: ps1= "[\e[1;36m][\[email protected]\h \w]\$[\e[0m]"To save exit exit effects:------------------------------------------------------------Modify the

First, the basic conceptThread: A unit in the process responsible for executing code, part of a process, a process must have at least one thread, that is, a process can have more than one thread, which needs to be created, the following is the

Installing the Linux operating system (??.??)WIN10 UpgradeAsk you a question first, do you hate WIN10 upgrade system?My answer: Yes, obviously has the automatic update closed, but there will be "easy to Rise", Win10 Yi Shen has been unloaded. So I