$$The PID of the shell itself (ProcessID)$!PID of the Shell's last running background process$?End code of the last Run command (return value)$-Flag at a glance using the SET command$*All parameter lists. such as "$*" in the Case of "" ", in the form of" $ $ ... $n "output all parameters.[Email protected]All parameter lists. such as "[email protected]" with "" "in the case, with" $ "" $ "... All parameters are output in the form "$n".$#Number of arguments added to the shell$The name of the shell
I feel that my understanding of Linux has not been enough, so I recently turned to a "bird brother's Linux private dishes." This is a basic book, lofty high-rise floor, will not much but can learn. This is a few of my knowledge points, although very basic. Hope to share with you. Chapter 0 Computer Overview1, the computer has three major parts:A. input section, including keyboard, mouse ... B. Central processing Unit (CPU): Logic, control, memory an
think the former effect is closer to the example, but this is certainly not the way to add CSS to the problem caused by different. In order to write this summary open double screen, unexpectedly found that the previous copy of the window size compatibility better, the latter part of the form has been completely deformed. This question is mentioned in "Mastering CSS," and if there is time, I will summarize how to make the Web page compatible with the window.(1) Examples of using style elementsSo
Author: Jannock
Affected Version: Discuz! NT 2.x-3.5.2Http://www.discuz.net
Vulnerability Type: SQL InjectionVulnerability Description: Discuz! NT is a powerful community software under Comsenz. It is based on the ASP. NET platform.Vulnerability Analysis: ajaxtopicinfo. ascx poster SQL Injection VulnerabilityArbitrary User Control calling vulnerability combined with ajax. aspxIn the admin/UserControls/ajaxtopicinfo. ascx File
Go to the GetCondition fu
Installation Requirements:The BIOS of your computer must be enabled Vt-x or amd-v virtualizationInstalling hypervisorMacos:virtualbox or VMware Fusion, or Hyperkit.Linux:virtualbox or KVM.Note:The Minikube also supports the--vm-driver=none option, which can be run directly on the host instead of on the VM. With this option, Docker is required, not hypervisor.Installing KubectlRefer to the installation documentation for 0-1Installing MinikubeInstall ac
When using Caffe run FCN test, the following error is prompted:Check Failed:error = = cudasuccess (2 vs. 0) out of memoryis the memory overflow, and is the Cuda, then the GPU cache overflow.In this case, the first thing to see is the training and testing of the batch_size, and the training process is no problem, indicating that the training batch_size no problem;This problem with the test process, see the F
Tags: deviation chinese data cts You multitasking performance GPO ESCLearning Goals
Understand what multi-task learning and transfer learning is
Recognize bias, variance and data-mismatch by looking in the performances of your algorithm on train/dev/test sets
"Chinese Translation"Learning GoalsLearn what multi-tasking learning and migration learning identify deviations, variances, and data mismatches by viewing the performance of the algorithm on the training/dev/test setCourse three
Lucas theorem: N is written in P-ary A[n]a[n-1]a[n-2]...a[0], and M is written in P-b[n]b[n-1]b[n-2]...b[0], then C (n,m) and C (A[n],b[n]) *c (a[n-1],b[n-1]) *c ( A[n-2],b[-2]) *....*c (a[0
Reprinted from: Cardiac Note (http://493420337.iteye.com/blog/593981)--------------------------------------------------------------------------------------------------------------- --------------------------------------------------Chomsky divides the method into four types, namely, type 0, 1, 2 and type 3. The concept of these types of grammar must be mastered and is a very important test center. For these
Javascript Learning Guide 0---2
Okay. Pretty girls have read it. Let's continue with the content of the last lecture (the content of the previous section)Control statement:
First, I would like to sum up a total9
Expires/expires + CgogaWYg0 ++ expires/Cw + bAtLfWsfDOqtXivLi49r/Y1sbT777kvtm49sD919MKPHA + expires = "brush: java;"> var I = 10; if (I> 15) {alert ("I> 15")} else if (I
Var I
Topic:Number 0 to n (inclusive) in number 2 appears several times.Ideas:1, violent methods, the number of each number contains a few 2, and then summed up.2, Analysis: Consider the number of each digit n each occurrence 2 times, such as 123123;Consider 4123123 from left to r
From: Http://www.hivemq.com/blog/mqtt-essentials-part-6-mqtt-quality-of-service-levelsQuality of Servicewhat is quality of Service?The quality of Service (QoS) level was an agreement between sender and receiver of a message regarding the Guarant Ees of delivering a message. There is 3 QoS levels in MQTT:
At the most once (0)
At least once (1)
exactly once (2).
When talking about QoS th
$# is the number of arguments passed to the script. $ is the name of the script itself. $ is the first parameter passed to the shell script, and the second argument that is passed to the shell script is [email protected] is a list of all the parameters passed to the script $* is to display all parameters passed to the script in a single string, unlike positional variables, which can be more than 9 $$ is the current process ID number for the script to run? is to display the exit status of the las
As mentioned in chapter 13th daemon (pp. 343-344) of advanced Unix programming, you can use the following method to enable/dev/null for daemon, make it have file descriptors 0, 1, and 2./* Close */For (I = 0; I {Close (I );}Fd0 = open ("/dev/null", o_rdonly );Fd1 = DUP (0 );Fd2 = DUP (
as hardware raid, and features are not as good as hardware raid.
Next we will introduce various RAID technologies
I. RAID 0
The band technology is used to write data in parallel on multiple disks in bytes or bits (the starting offset of each disk is the same, and the subsequent segments of a certain number of bytes, i/O read/write performance can be improved, but it does not have data redundancy like raid1. Once the hard disk fails, it will be done.
Linux variables #, @, 0, 1, 2, *, $, $? Linux VariablesLinux variables #, @, 2, *, $, $
Let's first write a simple script and then explain the meaning of each variable after execution # touch variable # vi variable script content is as follows :#! /Bin/shecho "number :#"
Echo "scname: 0"
Echo "first: 1" echo "second
The front-end JS use XMLHttpRequest 2 upload pictures to the server, PC end and most mobile phones are normal, but in a small number of Android phone upload failed, the server to view the picture, displaying a byte count of 0. Here is the core code for uploading pictures:
Html
The code above uses Formdata to implement the form data submission. Formdata is a new type of data for XHR2 design that al
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