Linux

1: Using Sqlite3 in C requires calling function interface operations: Sqlite3*db;intStatus=sqlite_open ("dbname", &db);//Open or create a database intStatus=sqlite3_exec (Db,yuju,huitiaohanshu,0, Cuowuzhizhen);//all operations of the database have

Su-#su-oldboy//When executing this command, switch to Oldboy user, and re-read the user environment-related configuration file, specifically to execute under the user home directory. Bash_profile and. bashrc files, this we become the full switch

When using Linux, it is often necessary to perform timed tasks and write some timed scripts using crontab. Recorded here, convenient for later memories.To facilitate later use, the following online excerpt:Crond and CrontabCron is a server provided

One: The origins of LinuxLinux is an open-source computer operating system kernel. It is a Unix-like operating system written in C and POSIX compliant, and Linux was originally developed by Finnish hacker Linus Torvalds to try to provide free and

Linux file ManagementCP, MV, RMCopy command: CPCP [Option] ... [-T] SRC (source) DEST (Purpose)(If the target does not exist, a new dest is created and the content in Src is populated into dest.) If the target exists: If Dest is a file, the SRC

1) The directory where the CD is switched① Command name: CDCommand English original: Change directoryCommand path: Shell built-in commandExecute Permissions: All Users②cd/usr/local/srcRelative path: Look for the current directory.    Be sure to

Windows volume management, batch monitoring, bulk operations, batch security scan Linux Solaris Aix Hp-unix Windows and other operating system interface the most concise graphical tools.qq:3468937449 QQ Group: 5,616,635,721 Learning and

Snmp monitor linux servers First,  modified by the monitored sideShell#yum Install Net-snmp–yshell# Mv/etc/snmp/snmpd.conf/etc/snmp/snmpd.conf.bakshell# vim/etc/snmpd/snmpd.confCom2sec mynetwork 10.0.2.161 Public # here writes the service-side IP

The date command in Linux is primarily used for time calculations and log time format settings.Date + "%T" shows the time T as a tab[[Email protected] ~]# date + "%T" 14:00:08[[email protected] ~]# date + "%T" [[email protected] ~]#Date +

The SS command is used to display the socket information in the active state. The SS command can be used to get socket statistics, which can display and netstat similar content. But the advantage of the SS is that it can show more and more detailed

In the study of Linux system, we want to see the file, generally on the cat command execution, the execution of large files, it is not good to make;Less and more can achieve your dream, can help you to view the large file content,More

1.Linux hard links and soft connectionsln command, create a connection command parameters: Necessary parameters:-B Delete, overwrite previously established link-D allows super users to make hard links to directories-F Force Execution-I

sed command file Edit Document index [hide] sed option, command, replace mark option parameter sed command sed replace mark sed meta character set SED usage instance replace operation: s command full replacement Mark G delimiter delete operation: D

TTY Console terminal tty1~tty6?CTRL + ALT + F2~F6 switch consoleALT + F1 returnHowever, after using init 3 in the graphical interface, you cannot use ALT + F1 to return, because the two are not a problem.Init 3 Toggle Current Run levelCTRL + ALT + F2

1 defGet_sql_log (host,port,user,password,key_words,out_put_filename):2Commond='CD crm-app/;. /tailall.sh | grep%s'%Key_words3s =Paramiko. Sshclient ()4 S.set_missing_host_key_policy (Paramiko. Autoaddpolicy ())5 S.connect

1. Start HOSTAPD and enter sudo under terminal./HOSTAPD hostapd.conf (Note: The HOSTAPD and hostapd.conf used are in the current working directory)1.2. The following error occurs after you execute 1:Configuration file:hostapd.confNl80211:could not

backgroundBecause the server in the production environment does not install the desktop environment, a graphical installation of simple operations is not suitable for batch deployment installations. Therefore, I prefer to install the KVM virtual

2016-08-22Content of the lesson:ArrayAdvanced string manipulationOne, arrayVariables: Storing the memory space of a single elementArray: A contiguous memory space that stores multiple elements, equivalent to a collection of multiple variables.Array

When yum is used, the download package settings are retained, and the yum retention package settings are retained. From: http://www.360doc.com/content/11/0218/15/4171006_94080041.shtml   Configure yum to retain the downloaded rpm package for

Create an SVN Server in Ubuntu 14.04) To learn how to build the SVN server, I set up an SVN server on the Ubuntu virtual machine, which can be used as the project development version and recorded to prevent forgetting it, at the same time, it can