grandstream 2140

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Classification and usage of shell commands under Linux

-xr-x 1 root root 253816 Jan btrfs-show-super*-rwxr-xr-x 1 root R Oot 249464 Jan btrfstune*-rwxr-xr-x 1 root root 245368 Jan Btrfs-zero-log*-rwxr-xr-x 1 root root 3 1288 Bunzip2*-rwxr-xr-x 1 ROot root 1964536 busybox*-rwxr-xr-x 1 root root 31288 may bzcat*lrwxrwxrwx 1 root root 6 J UL 16:19 bzcmp-bzdiff*-rwxr-xr-x 1 root root 2140 may bzdiff*lrwxrwxrwx 1 root root 6 Jul 31 16:19 Bzegrep-bzgrep*-rwxr-xr-x 1 root root 4877 may bzexe*lrwxrwxrwx 1 root r

Analysis of Linux input subsystem--Initialization of input subsystem __linux

Linux Input subsystem Analysis (1)--Initialization of input subsystem [linux-3.0 http://lxr.linux.no/#linux +v3.0] Input SUBSYSTEM: 2173subsys_initcall (Input_init); The source code is as follows: 2133static const struct File_operations input_fops = {2134. Owner = This_module,2135. Open = Input_open_file,2136. Llseek = Noop_llseek,2137};21382139static int __init input_init (void)2140{2141 int err;21422143 err = Class_register (input_class);2144 if (

Win32API Call error number and information (2000-2999)

exceeds allowable limit"). ADD (2122, "Peer-to-peer service supports only two simultaneous users"). ADD (2123, "API return buffer too small"). ADD (2127, "Remote API error"). ADD (2131, "error opening or reading configuration file"). ADD (2136, "General network error occurred"). ADD (2137, "the status of the Workstation service is inconsistent.) Restart the computer before restarting the Workstation service. ADD (2138, "Workstation service not Started"). ADD (2139, "required information not ava

The mystery bitcoin

is also determined by the bitcoin algorithm. If the speed at which Bitcoin is produced increases the difficulty of digging, and if Bitcoin slows down, it reduces the difficulty. According to bitcoin's algorithm, once no one digs the mine, Bitcoin's trading will be impossible to deal with, and bitcoin's economy will stop. Can bitcoin be issued indefinitely? As mentioned above, Bitcoin can be created out of thin air by digging holes, so can bitcoin be created? The answer is no, the bitcoin has

Oracle database INSERT into aud$ causes high version problem ora-600[17059]

() 000005028 0070d9274 0070d9280000000036AUDDFT () +2140 call??? Audlon () 006f79de0 0092ACAF1 000000000000000000KPOLNB () +4007 call??? AUDDFT () 0246af458 000000064 000000000000000000Kpolon () +237 call??? KPOLNB () 1d181e300000051 02b47af20000000000 000026161OPIODR () +1662 call??? Kpolon () 000000001 000000000 00000000000a42f224TTCPIP () +1325 call??? OPIODR () 4800000000000051 40000001A02b47e100 000000000Opitsk () +2040 call??? Ttcpip () 02546f1

"Blockchain" Bitcoin and blockchain development history

bitcoin production.2. What is bitcoinBitcoin concept is proposed by the Nakamoto, is a point-to-point, de-neuter digital assets, 2009 years in the first block, and won 50 Bitcoin mining incentives, mining awards halved every four years, according to this calculation, Bitcoin is expected to be released in 2140, the total amount of 21 million pieces, With the development of bitcoin, Bitcoin is gradually recognized, Germany is the world's first to accep

MySQL Semi-synchronous replication

location)mysql> INSTALL PLUGIN rpl_semi_sync_master SONAME ' semisync_master.so ';#启动插件mysql> SET GLOBAL rpl_semi_sync_master_enabled = 1;#设置超时mysql> SET GLOBAL rpl_semi_sync_master_timeout = 1000;#修改配置文件[Email protected] ~]# VIM/ETC/MY.CNFAdd the following #在 the [Mysqld] tab (without restarting the library)[Mysqld]Rpl_semi_sync_master_enabled=1rpl_semi_sync_master_timeout=1000#半同步插件的位置[Email protected] plugin]# pwd/application/mysql/lib/plugin[email protected] plugin]# LLTotal

The port number of the Network Foundation

Girlfriend 1.3, Millenium 1.0 Open this port. Port: 2001Service: [NULL]Description: Trojan Millenium 1.0, Trojan Cow Open this port. Port: 2023Service: Xinuexpansion 4Description: Trojan Pass Ripper Open this port. Port: 2049Services: NFSDescription: NFS programs often run on this port. It is often necessary to access the Portmapper query which port the service runs on. Port: 2115Service: [NULL]Description: Trojan bugs open this port. Ports: 2140, 31

HBase Delete Data free space

# hbase Check hbase size HDFs dfs-du-h/hbase/data/default/[root@zhjt machtalk]# HDFs dfs-du-h/hbase/data/default 197.4 m 197.4 M/hbase/data/default/api_access_record 1.0 M 1.0 m/hbase/data/default/dev_opt 38.6 m 38.6 m/h Base/data/default/log_record 333 333/hbase/data/default/dev_fault 13.4 M 13.4 m/hbase/data/default/value_d ATA describe ' api_access_record ' alter ' tablename′, NAME = ' Api_access_record ', TTL = 2592000 alter ' api_access _record ', NAME = ' values ', TTL = 259200 [machtalk@

Change the MySQL database encoding to UTF8MB4

Tags: do not describe send MES details CTE variable MySQL database headOriginal: http://blog.csdn.net/woslx/article/details/49685111The UTF-8 encoding may be 2 bytes, 3 bytes, 4 bytes of characters, but the UTF8 encoding of MySQL only supports 3 bytes of data, and the expression data on the mobile side is a 4-byte character. If you insert emoticons directly into a UTF-8 encoded database, the SQL exception will be reported in the Java program: Java.sql.SQLException: Incorrect string valu

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