Linux

After starting GDB, the first thing to do is to set a breakpoint before the program can be debugged. In gdb, breakpoints usually have three types:Breakpoint (Breakpoint):Interrupt at the specified location of the code, this is the one we use the

One, open SecureCRT, open session, use yum-y install mariadb mariadb-server command installationSecond, wait for the installation finished, display complete!, indicating that the installation is completeThird, start mariadb serviceService MARIADB

Common options:-E: A regular expression to open the extension (Extend).-I: Ignores casing (ignore case).-V: In turn (invert), only printing does not match, while matching instead of printing.-N: Show line numbers-W: The matched text can only be a

Linux system security and applicationAlthough Linux system is safe, efficient and stable, it will not be safe if you don't pay attention to security optimization. This chapter describes account security, system boot and login security, and the use

Original from http://www.ghacks.net/2009/04/04/get-to-know-linux-the-etcinitd-directory/Translation from http://blog.csdn.net/acs713/article/details/7322082 Note: The author has a blog about the LIUNX system kernel knowledge of dry goodsFirst, about/

Many of the work of the netizen on the operation of the positioning of the work, blame, "the blame"!Enterprise operation and maintenance of more than 50% of the fault is due to internal personnel management errors caused by, "a process" is a typical

0 System Stop1 Single user system, no login required2 Multi-user system but NFS not supported, command-line mode login3 full multi-user mode, command-line mode login4 Not used5 X11 Graphics mode, graphical mode loginRunLevel View current Run

Linux Basic operations:PWD Displays the current directoryll is used to view files and directories, the list, whose parameters are more-l lists data strings, including file attributes and permission data, etc.-A lists all files, including hidden

AWKawk: Report Generator, formatted text outputGawk: Mode scan and processing languageBasic syntax:Options: OptionProgram:awk's languageVar=value: Assigning a value to VarFile: Parameterawk [Options] ' program ' var=value file ...awk [Options]-F

1. Pipe command symbol "|" function is to use the standard output of the previous command as the standard input for the latter command, in the form: " command a| command B".The command to find the restricted login user is: grep

1, the components of the Linux system:Kernel: Management of processes, memory, network protocol stacks, file systems, drivers, security functions, etc.Root file system2, the operating system environment is divided into two layers:Kernel space: Also

InternetOSI (Definition of the International Organization for Standardization Network, Open Systems Interconnection) ISO (International Organization for Standardization)OSI Network Model tieringLower level services for the upper layer7 Application

Detect if it is compromised: Handling of common viruses: Linux Open source anti-virus software:ClamAV Useful commands: -View and Delete startup items # chkconfig--list | grep 3:on# chkconfig--del AANRVKDDXB-View and find Trojan files#

Linux Build DHCP server1. Mount the System CD2,!! Building a DHCP server must have a static address, where I am configured to 192.168.1.1 Subnet mask is 24 bits3. Install DHCP service4. Modify the configuration file5. Write the configuration file in6

1. Set the IP address:Ifconfig Ens33 192.168.60.231/242. Add default gateway route$Route Add default GW Example: #route add default GW 192.168.1.13. DNS server configuration file:/etc/resolv.conf[Email protected] ~]# vim/etc/resolv.conf# Generated

First, the Introduction of NFSNFS is the abbreviation for network filesystem, which is the networked file system. A contract for the decentralized file system, developed by Sun, was announced in 1984. The function is to enable different machines,

Files and Permissions in Linux-rwxr-xr-x 1 Cat Animal 03-31 21:47 sleep.shThree types of user roles:R 4 W 2 x 1User, owner of the fileGroup, user groups to which they belongOthers, the othersFind FilesFind: The most feature-rich file Lookup

Wget should be the most commonly used download tool, but it does not support multi-threaded downloads.Axel InstallationThe Epel source has a Axel binary package that can be installed using Yum.yum install epel-releaseyum install axelAxel How to

Mysql SQL statement error solution during Linux deploymentIf you select the COUNT () column, the group by clause should have columns with the same name. Otherwise, an error occurs: If ONLY_FULL_GROUP_BY enables the SQL mode, an error occurs: mysql>

How to deploy the springboot project in maven to the linux server, mavenspringboot Suppose we already have something1. maven has been installed2. The springboot project has been established and can run properly locally.3. the linux server has the