1 1 email settings

[Email protected] mysql5.6.34]# RPM-IVH mysql-server-5.6.34-1.el7.x86_64.rpmWarning:mysql-server-5.6.34-1.el7.x86_64.rpm:header V3 dsa/sha1 Signature, key ID 5072e1f5:nokeyPreparing ... ################################# [100%]File/usr/share/mysql/charsets/readme from install of mysql-server-5.6.34-1.el7.x86_64 conflict

:off 1:on 2:off 3:off 4:off 5:off 6:offThen execute a command to open 5 services that require self-booting:[Email protected] ~]# chkconfig--list |grep 3:off|egrep "Sshd|sysstat|crond|network|rsyslog" |awk ' {print ' Chkconfig ", $," on "} ' |bash (Turn off all self-service after starting the 5 services that require self-booting)[[email protected] ~]# chkconfig--l

I. Hardware ResourcesMemory: 1G or moreSwap space: At least 1.5G, twice times of memory requiredTemp Space: 400MLinux The temporary space is / tmpWindows The temporary space is as follows:c:\> Echo%homedrive%%homepath%\local Settings\TempHard disk space: Linux/unix needs 1.3~3.5gWindows requires 1~1.5gIi. OFA Best Flexible Architecture (directory naming)1 , Linux

1: Install the operating system. You don't need to write a tutorial. (Omitted) I personally use centos6.5 for minimal installation. Disable firewall and SELinux after installing the system [[Email protected] ~] # Service iptables stop // disable the Firewall Service [[Email protected] ~] # Chkconfig iptables off // permanently disable [[

The terminal is the window where the user interacts with the shell environment, and most of the interaction results are displayed directly to the user from the terminal, so this is the basis for the friendly display results.1. Overview of CommandsECHO is the basic Terminal output command that directly enters the input parameters and the command format is as follows:echo [options] toBeOutputDetailed description is as follows:2. Description of character

package vsftpd what files or directories will be generated? ^c [[emailprotected] ~]# View RPM package elinks details? ^c [[emailprotected] ~]# DF Filesystem 1k-blocks used Available use% mounted on /dev/mapper/vg_ Centos6node1-lv_root 38776280 5818208 30988308 16%/ Tmpfs 506176 224 505952 1%/dev/shm /dev/sda1 495844 34897 4353 8%/boot /dev/sr0 4363088 4363088 0 100%/media/centos_6.5_final [[emailprotected] ~]# Cd/media/centos_ 6.5_final/ [[emailp

, login to console command line mode.4: The system is not used, reserved for general use, in some special cases you can use it to do some things. For example, you can switch to this mode to do some setup when your laptop's battery is running out.5: graphical mode, after landing into the graphical GUI mode or GNOME, KDE graphical interface, such as the X Window System.6: Restart mode, the default operation level can not be set to 6, otherwise it can not start normally, will always restart the pow

1, multiple actions, how to write?[Email protected]:~/linux/awkcat host.txt name IP address host1 192.168. 1.1host2 192.177. 81.1host3 10.0. 0.5host4 192.168. 3.98host5 192.168. 3.98host6 192.168. 9.254Each {} represents an action:[Email protected]:~/linux/awk$awk '{print $ {print $}'host.txt NAMEIP Address host1192.168.1.1Host2192.177

-uroot-p123 shutdown 2, servive mysqld stop Try to avoid using the KILL command Mysqladmin command to turn off MySQL [[email protected] bin]# mysqladmin shutdown-uroot-p123 warning:using a password on the command line interface can Be insecure. 　　perror Command [Email protected] bin]# perror OS error code : Permission denied The perror command is a MySQL self-command that can query the meaning of the MySQ

server time[Offset] => + 8 current server time zone)$ _ G ['config'] => Array ($ _ G ['config'] [db] => Array ($ _ G ['config'] [db] [1] => Array ($ _ G ['config'] [db] [1] [dbhost] => localhost database connection address$ _ G ['config'] [db] [1] [dbuser] => root database username$ _ G ['config'] [db] [1] [dbpw] => 1

Tags: http using strong data art CTIIn some cases, using limit 1 in an SQL statement can improve query efficiency if you know that there is only one query result.For example, the following user table (primary key ID, mailbox, password):CREATE TABLE T_user (ID int primary KEY auto_increment,Email varchar (255),Password varchar (255));Each user's email is unique, i

sudo rpm-ivh xxx.rpm -aid--force[Email protected] oracle]$sudoRPM-IVH compat-libstdc++-7.3-2.96.118. i386.rpm compat-libstdc++-devel-7.3-2.96.118. I386.rpmwarning:compat-libstdc++-7.3-2.96.118. i386.rpm:V3 DSA Signature:nokey, key ID db42a60epreparing ... ####################################### #### [ -%] file/usr/lib/libstdc++-2-libc6.1-1-2.9.0. So fromInstallof compat-libstdc++-7.3-2.96.118 conflic

error code for bash3-126: User-Customizable error codes128-255: A command quits abnormally, but exits because a signal is received, so the status return value is 128+n, where "N" indicates the number of the signal received by the command.Please refer to the following example:[Email protected] ~]# CD-A-BASH:CD:-a:invalid optioncd:usage:cd [-l|-p] [dir](the option for internal commands is wrong here)[Email p

set personalized boot entry and settings Execute/bin/login program Enter login status Second, the common start troubleshooting1. Encrypt grub to prevent root password from being cracked[Email protected] ~]# Grub-md5-crypt #加密grub密码Password:Retype Password:$1$yr8im$ri0etbadp9l80jb2bdxpk1[Email protected] ~]# sed-i '

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