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Turn Xiaomi router into a smart WIFI (1): when someone goes home, it sends a text message to tell you that Xiaomi wifi

overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:176410 (172.2 KiB) TX bytes:103339 (100.9 KiB) Interrupt:13wl1 Link encap:Ethernet HWaddr 64:09:80:18:7B:C1 inet6 addr: fe80::6609:80ff:fe18:7bc1/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:4042 errors:0 dropped:0 overruns:0 frame:0 TX packets:2064 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:869980 (849.5 KiB) TX bytes:832223 (812.7 K

Apache compiler parameters Detailed (Linux under the manual code compiled apache) __linux

pipeline log program for the Apache log–enable-static-logresolve//using static connections to compile logresolve– the IP address in the Apache log is the host name–ENABLE-STATIC-HTDBM//using static connection to compile htdbm– operation DBM Password database–enable-static-ab//using static connections to compile Ab–apache HTTP server performance test Tool–enable-static-checkgid//compile checkgid with static connection–disable-cgid//prohibit CGI script

Simple operation of DB2

' myinst ' in a command window, you can run the following operating system command: Set Db2instance=myinst.2) Database Manager configuration fileThe Database Manager configuration file (dbm cfg) contains parameters that affect the corresponding instance and its database. You can view and modify the Database Manager configuration file from the command line or the DB2 control center.To start dbm CFG from Con

DB2 Common Commands

Label:1. Launch instance (DB2INST1): Db2start 2. Stop the Instance (DB2INST1): Db2stop 3. List all instances (DB2INST1) Db2ilist 3-1. List the current instance: DB2 Get Instance 3-2. List all databases: DB2 List Database Directory 4. Look at the sample configuration file: DB2 Get DBM Cfg|more 5. Update the Database Manager parameter information: DB2 update dbm CFG using Para_name para_value 6. Create a data

DB2 database authorization

DB2 database authorization is implemented through the GRANT command. After DB2 database authorization, users can perform corresponding operations on DB2. DB2 database authorization consists of privileged groups and advanced database management program instance-level maintenance and practical operations. Of the five permissions available for DB2, SYSADM, SYSCTRL, and SYSMAINT are instance-level permissions. This means that their range includes instance-level commands and commands for all database

Detailed explanation and analysis of lspci

second is the memory address space mapped to it. The two values can be verified in/proc/iomem and/proc/ioport.-[]-+-00.0+-02.0+-1d. 0+-1d. 1+-1d. 2+-1d. 7+-1E. 0-[] -- +-02.0|/-05.0+-1f. 0+-1f. 1+-1f. 3/-1f. 500:00. 0 host bridge: Intel Corporation 82845g/GL [Brookdale-G]/GE/pe dram controller/Host-hub interface (Rev 03)00:02. 0 VGA compatible Controller: Intel Corporation 82845g/GL [Brookdale-G]/Ge chipset integrated graphics device (Rev 03)00: 1d. 0 USB controller: Intel Corporation 82801db/D

Experience on using the key/value database redis and TTSERVER _ PHP Tutorial-php Tutorial

too large and the physical memory consumption was astonishing! Let's talk about TTSERVER.Tokyo Cabinet is a DBM implementation. The database here consists of a series of key-value pairs. Both key and value can be byte sequences of any length, either binary or string. There is no concept of data types and data tables. When used as a Hash table database, each key must be different, so the same values of two keys cannot be stored. The following access m

Detailed explanation: Linux operating system wireless network commands

Iwconfig is one of the User-layer configuration tools for Linux wireless extensions (LWE. LWE is a tool for wireless network configuration in Linux, including Kernel support, user-layer Configuration tool, and Driver Interface Support. At present, many wireless network cards support LWE, and mainstream Linux versions, such as RedHat Linux and Ubuntu Linux, have already brought this configuration tool. Usage: iwconfig interface [Essid {NN | on | off}] [nwid {NN | on | off}] [mode {managed | ad-ho

How to prevent certain hardware drivers from being loaded during system startup

, snd_cs4232, small, snd_hwdep, snd_cs4231_lib, snd_mpu401_uart, snd_rawmidi, snd_seq_device, large, small, snd_pcm, snd_timerSoundcore 6368 1 SNDSnd_page_alloc 7816 3 snd_cs4231_lib, snd_intel8x0, snd_pcmRng_core 3940 0Button 6096 0Intel_agp 22524 1Agpgart 28808 1 intel_agpExt3 105576 2Jbd 39476 1 ext3Mbcached 7108 1 ext3Ide_disk 10496 4Ide_pci_generic 3908 0 [permanent]Piix 6568 0 [permanent]Ide_core 96168 3 ide_disk, ide_pci_generic, piixAta_generic 4676 08139too 20384 08139cp 16800 0MII 4896

Python Core Programming (second Edition)--file and input/output

core modules:OS (and Os.path). The OS and Os.path modules provide different ways to access the computer's file system.8. Permanent Storage ModulePython provides a number of modules that can be used to minimize permanent storage. One of these groups (Marshal and pickle) can be used to convert and store Python objects. This process converts objects that are more complex than basic to a set of binary data, so that you can save the data collection or send it over the network, and then rest

Experience _php tips on using the Key/value database Redis and Ttserver

collectionZincrby Key Increment member adds _increment_ if a member is present, or it sets a score as _increment_Zrange Key start end returns a member of the specified range after ascending sortZrevrange Key start end returns a member of the specified range after descending sortZrangebyscore key min Max returns all member Usage Experience:Personally feel that Redis speed is needless to say (soon), but very consuming physical memory, is a redis of the disadvantage of it, redis suitable for the

MongoDB Data Storage Modeling

", Parent: "Databases"}) Db.categories.insert ({_id: "dbm", Parent: "Databases }) Db.categories.insert ({_id: "Databases", Parent: "Programming"}) Db.categories.insert ({_id: "Languages" , Parent: "Programming"}) Db.categories.insert ({_id: "Programming", "Parent:" Books "} ) Db.categories.insert ( {_id: "Books", Parent:null})2) Sub-document reference Db.categories.insert ({_id: "MongoDB", Children: []}) Db.categories.insert ({_id: "

Common commands in the DB2 command line processor (CLP)

Brief introduction The following is a quick reference to the most commonly used DB2 CLP commands. Although not a complete reference, this document can prove to be a valuable reference material for any user who has just contacted DB2. Feedback can be sent to ypaul@ca.ibm.com. The arguments in square brackets are optional arguments, and the contents in angle brackets represent variables. For example, the syntax for CONNECT is: connect to [ [user This means that by using the Connect command t

Key technology of CDMA

consistent. The capacity of CDMA system is mainly limited by the mutual interference of the internal mobile station, so the signal to noise ratio of each mobile station reaches the minimum, and the system capacity will reach the maximum value. CDMA power control is divided into: forward power control and reverse power control, and the reverse power control is divided into Open-loop and closed-loop power control. Reverse Open loop power control The reverse Open-loop power control is the chang

Lspci detailed analysis using, PCI device tree

/O port range It maps, and the second is the memory address space it maps. About these two values can be verified in/proc/iomem and/proc/ioport.-[0000:00]-+-00.0+-02.0+-1d.0+-1d.1+-1d.2+-1d.7+-1e.0-[0000:01]--+-02.0| \-05.0+-1f.0+-1f.1+-1f.3\-1f.500:00.0 Host bridge:intel Corporation 82845g/gl[brookdale-g]/ge/pe DRAM controller/host-hub Interface (rev. 03)00:02.0 VGA compatible Controller:intel Corporation 82845g/gl[brookdale-g]/ge Chipset Integrated Graphics Device (rev. 03)00:1d.0 USB Controll

DB2 Operation Commands

. bind command: Bind the application to the database, each time the database is restored, it is recommended (1) DB2 bind BR8200.BND(2)/btp/bin/bndall/btp/bnd/btp/bin/bndall/btp/tran/bnd 12. View Database parameters: DB2 get dbm CFGDB2 get DB CFG for Btpdbs 13. Modify Database parameters: DB2 Update DB CFG for Btpdbs using LOGBUFSZ 20DB2 Update DB CFG for Btpdbs using LOGFILSIZ 5120After you have changed, you should execute the following command to mak

Five tree-structured representations of MongoDB

First type: Parent link structureDb. categories. Insert ({_ID:"MongoDB", Parent:"Databases"})Db. categories. Insert ({_ID:"DBM", Parent:"Databases"})Db. categories. Insert ({_id: "Databases", Parent: "Programming"})db. Categories. Insert ({ _id: "Languages", Parent: "Programming"})db. Categories. Insert ({ _id: "Programming", "Parent: " Books "} )db. Categories. Insert ({ _id: "Books", Parent:null}) /c13> Characteristics: Quick Get parent nod

Five tree-structured representations of MongoDB

Tags: blog http os ar div SP log htmlFive tree-structured representations of MongoDBFirst type: Parent link structureDb. categories. Insert ({_ID: "MongoDB", Parent:"Databases"})Db. categories. Insert ({_ID: "DBM", Parent:"Databases"})Db. categories. Insert ({_ID: "Databases", Parent:"Programming"})Db.categories.insert ({ _id: Languages ", Parent: " Programming "}) db.insert ({_id: " Programming ", Parent: "Books"}) db.categories.insert ( {_id: Span

Explaining the principle of OFDM to the "small white" illustration

realizes by FFT. More descriptions will be made in the sections below.According to the ancient tradition, F represents the frequency domain, F represents the time domain, so can be seen from Equation 1-2, the amplitude of the modulation above each sub-carrier, is the frequency domain information. A similar argument is that OFDM transmits a frequency domain signal. This is a bit awkward, but many tutorials or articles use this way of explaining how the reader understands it. If purely from the f

OFDM Understanding (reprint)

modulation above each sub-carrier, is the frequency domain information. A similar argument is that OFDM transmits a frequency domain signal. This is a bit awkward, but many tutorials or articles use this way of explaining how the reader understands it. If purely from the formula or sub-carrier view, this statement is actually very straightforward elaboration.The above 1.1-1.3 extension, as shown:Figure VII: The OFDM system diagram on the time domain1.4 Is there another step? Actually, there is.

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