Email regular expressions and URL regular expressions There are two regular expressions about email regular expression and URL regular expression validation, which is very useful, the regular expression about email can get all the mailbox address in the content, and the URL address is the same, You can save and extract all HTTP start URL addresses in the content.
e-mail regular expressions and URL regular expressionsHere are two kinds of regular expressions about email and URL regular expression
Here, the e-mail Regular Expression and URL regular expression provide two types of Regular Expressions for Email Regular Expression and URL Regular Expression verification, which are very practical, the Regular Expression of email can obtain all the email addresses in the content, and the regular expression of url addresses is the same. You can save and extract all the URLs starting with http in the content.
Email and url Regular ExpressionsHere we provide two types of Regular Expressions for e
: W! Save and do not exit: W/test/bak. bak save as the specified path: R [file name] import File: N1, n2s/^/#/g n1 to n2 rows plus #: N1, n2s/^ # // g n1 to the front of the n2 line # Remove: N1, n2s/^ ///g n1 to the front of the n2 row add //: N1, n2s/^ ///g n1 to the front of the n2 line // removeUse AB to define conversion words: AB mymail liruxing1715@sina.com defines the conversion word, when entering mymail
Basic Linker Script Concepts
Every loadable or allocatable output section has two addresses. The first isVMA, Or virtual memory address. This is the address the section will have when the output file is run. The second isLMA, Or load memory address. This is the address at which the section will be loaded.
You can see the sections in an object file by usingobjdumpProgram with the-h option.For exampleObjdump XX.exe-h
Stage1.exec.exe: file format pei-i386
Sections:Idx Name Size vma lma File off Al
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The customer reported that the time US obtained by gettimeofday is always zero.You can modify the test code as follows:./Lpc3250test 1 0 50000Divsor is 1 sec is 0 USEC is 50000 ***Current Time:
full text with new: N1, n2s/old/new/g replace the string within a certain range. Replace the old string from line n1 to line n2 with the new string.
Vi practical operations:: Wq save and exit ZZ =: wq: Wq! Force save and exit. only the file owner and root can save and exit.: Q! Force exit: W! Save and do not exit: W/test/bak. bak save as the specified path: R [file name] Import file: N1, n2s/^/#/g n1 to n2 rows plus #: N1, n2s/^ # // g n1 to the front of the n2 line # Remove: N1, n2s/^ ///g n1
1. Date Time function
Time Conversion second function: Time_to_sec
Mysql> Select Time_to_sec (' 01:01:01 ');+-------------------------+| Time_to_sec (' 01:01:01 ') |+-------------------------+| 3661 |+-------------------------+1 row in Set (0.00 sec)
Second transformation time function: Sec_to_time
Mysql> Select Sec_to_time (3661);+-------------------+| Sec_to_time (3661) |+-------------------+| 01:01:01 |+-------------------+1 row in Set (0.00
# iperf -c 2xx.1xx.1xx.1xx -p 5555 -B 172.16.28.173 -i 1 -t 10------------------------------------------------------------Client connecting to 2xx.1xx.1xx.1xx, TCP port 5555Binding to local address 172.16.28.173TCP window size: 16.0 KByte (default)------------------------------------------------------------[ 3] local 172.16.28.173 port 5555 connected with 211.160.178.10 port 5555[ ID] Interval Transfer Bandwidth[ 3] 0.0- 1.0 sec 0.00 By
I. User table information
Ii. Conclusion
Use the query statement: Select count (1) from user; Use the explain statement to check whether the statement is indexed. the following result shows the query time of the statement.
Data Volume query time (unit: seconds)386781 0.17609341 0.27612181 0.25638021 0.27670821 0.28788461 0.34795261 0.35800501 0.34821741 0.35902421 0.66911181 1.70917661 1.71920421 1.58927501 1.61953181 1.73991821 1.96995701 1.77997341 2.041188461 1.181588461 1.641588461 1.68
Introduction: This is a detailed page of centos Yum source. It introduces PHP, related knowledge, skills, experience, and some PHP source code.
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================================ View the centos version MethodYou can view the following commands:
# Lsb_release-LSB version: core-3.1-ia32: core-3.1-noarch: graphics-3.1-ia32: graphics-3.1-noarchDistributor ID: centosDescription: cen
Check to see if the system is 64-bit or 32-bit:
The code is as follows
Copy Code
1, getconf long_bit or getconf word_bit[Root@localhost ~]# getconf Long_bit64
List all version information,
The code is as follows
Copy Code
[Root@localhost ~]# Lsb_release-aLSB Version:: core-3.1-amd64:core-3.1-ia32:core-3.1-noarch:graphics-3.1-amd64:graphics-3.1-ia32: Graphics-3.1-noarchDistributor Id:centosDescription:centos Release 5.5 (Final)re
iperf–help to view Iperf Help
Iperf parameter Introduction
Command-Line Options
Describe
Client-to-server sharing options
-F,--format [Bkmabkma]
Formats the output of the number of bandwidths. The supported formats are:' B ' = Bits/sec ' b ' = bytes/sec' k ' = kbits/
Command-Line Options
Describe
Client-to-server sharing options
-F,--format [Bkmabkma]
Formats the output of the number of bandwidths. The supported formats are:' B ' = Bits/sec ' b ' = bytes/sec' k ' = kbits/sec ' k ' = kbytes/
Newly deployed Zabbix server, on the Mointoring page after the launch, there is "Too many processes on Zabbix server" alarm. There's a lot of information on the Internet that can't be solved. Can only be handled according to experience1 PS-AXF Review the process and see what process is more.16838? S 0:00 \_/usr/local/sbin/zabbix_server:configuration Syncer [Waiting sec for processes]16839? S 0:00 \_/usr/local/sbin/zabbix_server:db watchdog [Synced Ale
/jstarkey/desktop/videoout. m2v
Audio 1 file: C:/winnt/profiles/jstarkey/desktop/videoout. MP2
Program file: C:/winnt/profiles/jstarkey/desktop/videoout
Encoding video:
Video Encoding finished at frame #1228.
Min bitrate of any one frame = 2773 bits
Max bitrate of any one frame = 339049 bits
Min bitrate over any one second = 1486741 BPS
AVG bitrate over any one second = 2706791 BPS
Max bitrate over any one second = 3040605 BPS
Total time: 1658 seconds (00:27:38), 0.74 frames/
with a strict size, make sure that this option is encapsulated with a proper typedef like
If you need to operate super large variables that are supported by the built-in types of C, see question 18.17.
Reference: [K R1, Sec. 2.2 p. 34]; [K R2, Sec. 2.2 p. 36, Sec. a4.2 pp.195-6, Sec. b11 p. 257]; [ISO,
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