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Python -- Regular Expression (3) 4. More powerful functions So far, we have learned part of the regular expression. In this section, we will introduce some new metacharacters and how to use groups to retrieve some matched texts. Certificate ----------------------------------------------------------------------------------------------------------------------------------------------------- 4. 1. More metacharacters Some metacharacters are called "zero-width assertions". They do not match any chara

pdriverobject ); Ntstatus DriverEntry (in pdriver_object driverobject, in punicode_string registrypath ); Void cfunc (); Void hookdestfunction ();Ntstatus deviceiocontroldispatch (in pdevice_object deviceobject,In pirp );Extern void func (); Void resumedestfunction (); Const wchar DevLink [] = l "//?? // Myevent ";Const wchar devname [] = l "// device // myevent ";Unicode_string devnameunicd;Unicode_string devlinkunicd; Ulong orgdestfunction = (ulong) 0x8043141f; // kireadythread Char jmpmycode

TasksThe main configuration file for Cron is/etc/crontab, which includes the following lines: Shell=/bin/bash path=/sbin:/bin:/usr/sbin:/usr/bin mailto=root home=/# run-parts * * * * Root Run-parts/etc/cron.hour LY 4 * * * Root run-parts/etc/cron.daily 4 * * 0 root run-parts/etc/cron.weekly 4 1 * * Root Run-parts/etc/cro N.monthly The first four rows are variables that you can use to configure th

is wrong! )*/1 * * * * root wget-o/var/log/cron.txt http://www.592.net/test.php every minute to visit a PHP script, check if PHP is automatically running every minute, can view Var/log/cro N.txt file, see if there is a website PHP back to the content on it!9, you can also use "-" to indicate a range, as follows 5 to 10 points of each hour to run0 5-10 * * * [command]10, there is also a special time keyword "@reboot", that is, each time you restart th

cannot use crontab; if Cron.allow does not exist, CRO N.deny exists, only users who are listed in the Cron.deny file cannot use the crontab command, other users can use it, and if two files exist, the user listed in the Cron.allow file can use crontab.In the crontab file, enter the command and time you want to execute. Each row in the file contains six fields, the first five of which are the time the specified command was executed, and the last field

cmdheight=2" command line (in the status line) of the height, default to 1, here is 2set ruler "in the bottom right corner of the editing process, the status line of the cursor position set laststatus=2" Always show status line set ShowCmd "displays the currently executed command in the status line, and the unfinished instruction fragment will also be displayed set scrolloff=3" cursor moves to the top of buffer andAt the bottom, keep 3 lines distance set Showmatch "highlight corresponding paren

2[[email protected] ~]# chkconfig--list|grep" 3:on "|awk ' {print \ {} ' |egrep-v ' CRO Nd|network|rsyslog|sshd|sysstat "|sed-r ' s# (. *) #chkconfig \1 off#g ' |bash method 3[[email protected] ~]# chkconfig--list| grep "3:on" |awk ' {print $} ' |egrep-v ' Crond|network|rsyslog|sshd|sysstat ' |awk ' {print ' chkconfig ' ' Off '} ' |bash6. SSH Remote Connection optimization[[Emailprotected]~]#cp-a/etc/ssh/sshd_config/etc/ssh/sshd_config_$ (date +%y%m%

This experiment uses linux-2.6.30.4 version test, cross-compiling to 4.3.3, the relevant source code can be downloaded by themselves or to this blog to see if there is, in their own environment to try to compile kernel by ensuring that the environment OK for subsequent porting ready. Unzip the downloaded linux-2.6.30.4.tar.bz2 to the location you specified tar jxvf linux-2.6.30.4.tar.bz2-c your_path Modify the Compilation tool and schema: Enter the kernel root CD linux-2.6.30.4 modify ma

Timing Tasks for Linux systems:1:linux the system to perform periodic tasks: The system periodically performs tasks such as polling system logs, backing up system data, cleaning up system caches, and so on.[Email protected] ~]# LL/VAR/LOG/MESSAGES*-RW-------. 1 root root 958906 Sep 08:30/var/log/messages2: Tasks performed by a user: tasks that a user or system administrator will perform on a regular basis, such as: Back up site data and database data at 0 o'clock every night.[Email protected] ~]

After the configuration completes PHP, the default PHP will generate session into the/tmp directory, resulting in a lot of/tmp directory files, so the session needs to be periodically cleaned up: Modify PHP.ini: [Root@hz scripts]# grep "Session.save_path ="/usr/local/php/lib/php.ini; Session.save_path = "N;/path"; Session.save_path = "N; Mode;/path "; Session.save_path = "/tmp"Session.save_path = "2;/tmp/session"[Root@hz ~]# cat/byrd/script/cleartmpsen.sh#!/bin/bash# version:1.0# Author:byrd#

the 0-width-defined character (Zero-width assertions). They do not make the engine faster when processing strings; instead, they do not correspond to any character at all, but simply succeed or fail. For example, "B" is a qualifier (assertions) that locates the current position at the word boundary, and this position is not changed by "B" at all. This means that the 0-wide qualifier (zero-width assertions) will never be repeated, because if they match once in a given position, they can obviousl

, vulgar" and felt like they were. 　　8, Microsoft Billgate the name, first appearing in a letter from gates to Microsoft's other founder, Paul Allen, in 1975. Says the company will focus on microcomputersoft-ware (micro-computer software), making it feel like a mixture of "microcomputers" and "software" words. Originally called Mi-cro-soft, then the middle of the "-" removed. 　　9. Facebook Whether Facebook is Mark Zuckerberg or any other Harvard s

] Client connection from 127.0.0.1 2011-08-29 15:13:58+0200 [cmdprotocol,0,127.0.0.1] CMD received from 127.0.0.1:test 2011-08-29 15:14:02+0200 [cmdprotocol,0,127.0.0.1] Cmd received from 127.0.0.1:lastlog 2011-08-29 15:14:05+0200 [cmdprotocol,0,127.0.0.1] Cmd received from 127.0.0.1:exit 2011-08-29 15:14:05+0200 [ cmdprotocol,0,127.0.0.1] Lost Client connection. Reason: [Failure Instance:traceback (failure with no frames): You can use the following command to initiate a command as a clien

Internet. So, how to make the site more visible with minimal investment and the most effective way to achieve it, and let search engine support easier to find it to attract more customers? Compared to the Pay-per-click (Per-per-click, PPC) advertising and conversion rate optimization (conversion rate optimization, CRO), website search engine optimization rankings (SEO) technology will be an important means to achieve this goal. Search engine marketin

; Query OK, 1 row Affected (0.00 sec) [[email protected] mysql]# ls-l total usage 20492 -rw-rw----. 1 mysql mysql 10485 760 April 6 22:01 ibdata1 -rw-rw----. 1 mysql mysql 5242880 April 6 22:01 ib_logfile0 -rw-rw----. 1 MySQL my SQL 5242880 April 6 21:59 ib_logfile1 drwx------. 2 mysql mysql 4096 April 6 21:59 MySQL Srwxrwxrwx. 1 MySQL mysql 0 April 6 22:01 mysql.sock drwx------. 2 mysql mysql 4096 April 6 21:59 test drwx-- ----. 2 mysql mysql 4096 April 6 22:

, │ ┌──── ↑ (-) ───────────────────────────────────────────────────────────── ┐ │ │ │ [*] C ompressed RAM block device debug Support │ │ │ │ C Ompaq Smart Array 5xxx support │ │ │ │ L ex dac960/dac1100 PCI RAID Controller support │ │ │ │ I Cro Memory MM5415 Battery backed RAM support

we haven't shown, most of which will be shown in this section. The remaining portion of the meta character to be discussed is the 0-width-defined character (Zero-width assertions). They do not make the engine faster when processing strings; instead, they do not correspond to any character at all, but simply succeed or fail. For example, \b is a qualifier (assertions) that locates the current position at the word boundary, and this position is not changed by \b at all. This means tha

. quality can be used with width and height , but it can also be used alone, and when used alone, the width of the picture will not change after compression, but because of the reduced quality, So the volume gets smaller. preserve_headers: Preserve the metadata for the picture after compression, true for retention, Fals E is not persisted, the default is true . Deleting a picture's metadata can reduce the size of the picture a li

When system requests fail, error code is returned. To understand the nature of the "error these codes need to be interpreted. They is recorded in:- /usr/include/asm/errno.hHere is a copy of the that file as of the 2004 on RedHat 7.3#define EPERM 1 */Operation not permitted */#define ENOENT 2 */No such file or directory */#define ESRCH 3/* No such process */#define EINTR 4/* Interrupted system call */#defin E EIO 5 */I/O error */#define ENXIO 6/* No such device or address */#define E2

having the API's users memorize certain sequential parameters. We can use the deconstruction assignment of an object to avoid property access each time the parameter is used: function removebreakpoint ({URL, line, column}) { //... } function removebreakpoint ({URL, line, column}) { //... } Configuration Object To refine the example above, we can provide default values for the object properties to be refactored, which is useful for objects that are configured as parameters bec