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Ping a network segment of signal capture and function practice scripts in shell scripts under Linux

the job, CTRL + Z is sending the signal4. Tee reads the standard input data and outputs its contents to a fileUsage: Tee [-A]/path/to/somefile-A: Represents the attachment to the back of an existing file, rather than overwriting it.Note: The tee instruction reads data from a standard input device and outputs its contents to a standard output device while saving to a file. !/bin/bashnet=192.168.1file= ' Mktemp/tmp/file. XXXXXX ' Cleanup () {echo "quiting ..." rm-f $FILEexit 1}trap ' cle

Shell scripts share _php techniques as a daemon instance that guarantees that PHP scripts do not hang

not $total_nums this variable, because just started running this script, found that only ran over the 4w multiple scripts to hang the ball, and later a look, because the connection database is not connected, the script has been hanging there. Adding this variable does not solve the problem, except that after each 1w user, the PHP script exits and is restarted by the following shell script. 3, Shell script as the daemon processI added this shell scr

Shell scripts monitor system load, CPU, and memory usage _linux shell

Mutt # VIM/ROOT/.MUTTRC Set sendmail= "/usr/local/msmtp/bin/msmtp" Set Use_from=yes Set Realname= "Moniter" Set from=fuquanjun@xxx.com Set Envelope_from=yes Set Rfc2047_parameters=yes Set charset= "Utf-8 4, the mail sends the test (S-mail title, a table plus annex) Copy Code code as follows: # echo "message content 123456" | Mutt-s "Message header test message"-a/scripts/test.txt fuquanjun@xxxx.com The f

Implementation Code for running scripts inserted into innerHTML _ javascript skills

In ajax programming, we often need to assign the page content obtained by xmlhttp to a container (such as div, span, or td) through innerHTML, but there is a problem here, that is, if the page content we will assign to innerHTML contains scripts, these scripts, whether external scripts or internal scripts, may not be e

Implementation Code for running scripts inserted into innerHTML

This problem may be insignificant or even negligible in some cases, but sometimes it is very serious, and it is likely that our program will not get the expected results. Therefore, we need to solve this problem.If you have read MSDN, you will find that not all scripts inserted into innerHTML cannot be executed. If the script tag of this script contains the defer attribute, IE will correctly execute these scripts

Code _ javascript tips for running scripts inserted into innerHTML

Let the code inserted into the innerHTML script run during ajax programming, we often need to assign the page content obtained by xmlhttp to a container (such as p, span, or td) through innerHTML, but there is a problem here, that is, if the page content we will assign to innerHTML contains scripts, these scripts, whether external scripts or internal

Shell scripts monitor load and CPU and memory usage

= yessetcharset = "UTF-8 4. Mail sending test (-s mail title,-a table with attachments)# Echo "Mail content 123456" | mutt-s "mail Title Test mail"-a/scripts/test.txt fuquanjun@xxxx.com The following error message is displayed: Msmtp: account default not found: no configuration file available An error occurred while sending the mail. The sub-process has exited 78 (). This email cannot be sent. Solution: Use msmtp to send a test:/usr/local/msmtp/bin/m

How to use Shell scripts in Linux to maintain Oracle

The roles and responsibilities of system administrators and DBAs are different. But in fact, this difference is usually not obvious. Many IT departments employ databases and operating systems. The roles and responsibilities of system administrators and DBAs are different. But in fact, this difference is usually not obvious. Many IT departments employ employees who can solve database-level and operating system-level problems. Of course, Oracle databases use operating system resources and can clos

Naming rules for Oracle database management scripts

The ORACLE tutorial is: naming rules for Oracle database management scripts. The data dictionary in Oracle is a very important part of the database and provides information about the relevant database. It is used by all Oracle users (from application end users, application design developers to database administrators) is a very important source of information. The data dictionary is created by running related database management

Do you know JavaScript non-blocking loading scripts?

As more and more websites involve "Web2.0" applications, the number of JavaScript scripts has also increased dramatically. As more and more sites evolve into "Web 2.0" apps, the amount of JavaScript increases. this is a performance concern because scripts have a negative impact on page performance. mainstream browsers (I. e ., IE 6 and 7) block in two ways: Resources in the page are blocked from downloa

Naming rules for Oracle database management scripts

The ORACLE tutorial is: naming rules for Oracle database management scripts. The data dictionary in Oracle is a very important part of the database and provides information about the relevant database. It is used by all Oracle users (from application end users, application design developers to database administrators) is a very important source of information. The data dictionary is created by running related database management

Execution order and compilation Order of scripts in "Go" unity3d (vs Engineering reference relationships)

Http://www.cnblogs.com/champ/p/execorder.htmlIn unity, you can create many scripts at the same time, and you can bind to different game objects individually, each of which runs in its own life cycle. The script is about compiling and executing, and this article is going to look at the compilation and execution order of the scripts in unity.Order of execution of event functionsLet's talk about the order of e

JS dynamically loads scripts and performs callback operations. js dynamic script callback

JS dynamically loads scripts and performs callback operations. js dynamic script callback Many people may have encountered the problem of loading other js files in javascript, but many may not know how to determine whether the js files to be loaded are loaded, if the loading is not completed, the function in the file will not be called successfully. This article explains how to load other js files in js and execute the callback function after loading.

Understanding Linux System/ETC/INIT.D directories and/etc/rc.local scripts

English version of this article from: http://www.ghacks.net/2009/04/04/get-to-know-linux-the-etcinitd-directory/The following is the author's own version of the translation, if you want to reprint to other sites outside CSDN, please indicate this article link.First, about/ETC/INIT.DIf you have used a Linux system, you must have heard of the INIT.D directory. What the hell is this directory for? It's only done one thing in the end, but it's very important that it's done for the whole system . The

Execution order and compilation order of scripts in Unity3d (VS Engineering reference relationships)

From: http://www.cnblogs.com/champ/p/execorder.htmlIn unity, you can create many scripts at the same time, and you can bind to different game objects individually, each of which runs in its own life cycle. The script is about compiling and executing, and this article is going to look at the compilation and execution order of the scripts in unity.Order of execution of event functionsLet's talk about the orde

Execution order and compilation Order of scripts in "Go" unity3d

Support the original, original stamp: Script execution Order and compilation order in Unity3dIn unity, you can create many scripts at the same time, and you can bind to different game objects individually, each of which runs in its own life cycle. The script is about compiling and executing, and this article is going to look at the compilation and execution order of the scripts in unity.Order of execution o

A variety of client scripts

Client scripts and server scripts are not very clear for a long time. Not to mention understanding deeply. Now let's try to describe your thoughts so that you can correct them.Understanding web programming is mainly about understanding server scripts and client scripts. Most people attach great importance to server

Using shell scripts to automatically build OpenSSL CAs, etc.

/mos_ca.conf: Configuration file, can make custom adjustment, also can not use, the script all has the default value First, get the script, to execute permissions, move to the system path, direct execution can generate CA self-signed and demo certificate: it generates all the files required in/etc/pki/ca/, and generates a set of demo certificates within the/opt/mos_demo directory, which is fully functional. The operation is as follows: [root @ test

Execution order and compilation order of scripts in Unity3d

Http://www.cnblogs.com/champ/p/execorder.htmlIn unity, you can create many scripts at the same time, and you can bind to different game objects individually, each of which runs in its own life cycle. The script is about compiling and executing, and this article is going to look at the compilation and execution order of the scripts in unity.Order of execution of event functionsLet's talk about the order of e

Use Python scripts to implement some BashShell tutorials in Linux

This article describes how to use Python scripts to implement some BashShell tutorials in Linux, including some simple input/output and email functions. For more information, see, command line reputation is quite high. Unlike other operating systems, the command line is a terrible proposition, but for those experienced in the Linux community, the command line is the most worthy of encouragement. Generally, command lines provide better and more efficie

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