if echo

6.4.4 using the Tcgetattr function and the TCSETATTR function to control the terminalTo facilitate the process of obtaining and modifying terminal parameters, Linux also provides tcgetattr functions and tcsetattr functions. The tcgetattr is used to

Php password & lt ;? Session_start (); $ p1 $ _ POST [pin]. & quot; _ & quot; $ p2 $ _ SESSION [pin]; echo $ p1; echo $ p2; echo $ _ POST [pin] $ _ SESSION [pin]; -- 1 php password is returned PHP code $ _ POST [pin] is aaa, and $ _

$ Php_self = isset ($ _ SERVER ['php _ SELF '])? $ _ SERVER ['php _ SELF ']: $ _ SERVER ['script _ name']; if ('/'= substr ($ php_self,-1 )) {$ php_self. = 'index. php ';} define ('php _ SELF', $ php_self ); If Echo basename (PHP_SELF) Displayed

Initialize mysql in Windows and mysql in windows In Linux, after mysql is installed, the service cannot be started directly. You must initialize the database first. Initialization mainly includes: Initialize required files for logs, tablespaces,

However, many developers do not realize that this function should not be used here, that is, in attributes, such: "Title =" "> Continue reading Many developers use this method in loop, page, and post to set up a hyperlink to a specified article.

/** * debuging (' dtrace '); View Call stack * debuging ($var); Print $var (var_dump) * debuging ($var, ' php '); Print $var (var_export) * debuging ($var, $echo, 2); Output $var * debuging (__line__.__class) in JSON format;//often used in large if

1. Script UsageGive a URL that automatically gets the URL corresponding to the IP and the IP ownership.2, script use preparation:A, nslookup command installation:Yum Install Nslookup–yb, with access to public network rights.3. How to use the script:[

1 First Test "/etc/vsftpd", "/etc/hosts" is the directory, and through the "$?" Variable view returns a status value to determine the test result.[Email protected] ~]# [-d/etc/vsftpd][[email protected] ~]# echo $?1[[email protected] ~]#

Objective: to control UART serial port transmitting and receiving data in user space by reading and writing UART device files.Setting the UART baud rate, parity enable, and so on in user space is done through the Termios structure and the Termios

The kernel parameters of the tested Linux are Linux rhel5 2.6.18-238.el5System is red Hat Enterprise Linux Server Release 5.6The related APR,APU,PCRE,OPENSSL package dependency scripts are not considered, and the dependent packages are already

The first few days of the project team out of the shell OJ questions to practice, the topic is about:The existing configuration file Conf.ini as follows, write the shell, enter title and key, output its value,If input FIFO1 a1, then output 11file

Linux environment, after the installation of MySQL, you can not start the service directly, you must first initialize the database. The main tasks of initialization include: Initialization of the log, table space and other databases must

The percentage of CPU, memory usage of the process seen through the top command is a floating-point number, and I need to process it while writing the script, so I learned a few things and summarized as follows. In fact, the Shell (here is bash)

Linux environment, after installing MySQL, not directly start the service, you must first initialize the database. The main tasks of initialization include: Initialize the files required for the database such as log, tablespace, etc;

#!/bin/sh#user : bobo365#date : 20160127make () {         if [  ' echo $? '  -eq 0 ] ;then                          Make                 else                          exit        fi}make_ins () {         if [  ' echo $? '  -eq 0 ] ;then              

25, Scripting: Pass a string to the script, the script will treat the string as the user name, if the user does not exist, then add and set the same password as the user nameFor:#!/bin/bash#If ID $ &>/dev/null; Thenecho "is exist."ElseUseradd $echo "

Method 1:Monitoring disk or CPU exceeding a certain value mail alert script:[email protected] scripts]# cat check.sh#!/bin/bashLang=en_us. UTF-8cpuused= ' Top-n 1|awk-f ' [,%]+ ' nr==3 {print100-$11} 'diskused=$ (df-h|awk-f ' [%]+ '/\/$/{print $}

#!/bin/bashyum-y Install BCKenel= ' Uname-r 'Kenel= ' echo ${kenel:0:3} 'If [$ (echo "${kenel} >= 3.10" | BC) = 1];thensudo yum install-y yum-utilssudo yum-config-manager--add-repo Https://download.docker.com/linux/centos/docker-ce.reposudo yum

#!/bin/Bashn_url="http://nginx.org/download/nginx-1.8.0.tar.gz"N_pack=`Echo$N _url|awk-F'/' '{print $}'' N_upack=`Echo$N _url|awk-F'/' '{print $}'|awk-F'.' '{print $ "." $ "." $-$}'' N_dir="/usr/local/nginx"functionNginx () {if[ `WhoAmI` !="Root"];

Reprint: http://blog.csdn.net/ronliu/article/details/6446251The use of function pointer hooks in Linux makes it difficult to read code. For example, if you want to know the invocation path of a function, you can only look at the code with a tool