var

The scope of variables defined by var in JScript does not remember when the JScript syntax tutorial was read. It is completely legal to ignore the var keyword when declaring a variable. At that time, because JavaScript was thought to be the

Today, when we changed the code, I found that many loops of code were written in the for (var i-in data), and I usually use the for (Var i=0;iJust looked at, the original two are different, can not be equated with the use.We see a () will pop up

If the website cannot be opened, you must first check the log file and immediately open:/var/log/httpd/error_log. The last error is: If the website cannot be opened, you must first check the log file and immediately open:/var/log/httpd/error_log.

Read someone else's blog and jot it downLet's take a look at the following code1 var a=1,b=2,c=3; 2 3 (function() {4 var a=b=1; 5 })(); 6 7 Console.log (a); 8 Console.log (b);This is a well-known closure, yes, a very

Net-snmp the log default record in /var/log/messages , since most of the SNMP with the remote host connection information, and many, affecting the other system log view, it is possible to use this method to SNMP the log from /var/log/messages

How to Understand the const source and var dest in the move Parameter Summary by skyjackerContributor: Xiaofeng, liuxiaoHttp://www.cnpack.orgCnpack iv qq group: 1309702007-01-31(Please indicate the author, source, and integrity of the

An error occurred while installing the software Couldnotgetlock/var/lib/dpkg/lock in ubuntu. The following error was reported when installing ssh on ubuntu today: E: cocould not get lock/var/lib/dpkg/lock-open (11: Resource temporarily unavailable)

1: The generated crash is stored by default in:/var/crash, the file where the control is stored is:/var/sysconfig/kdump file. To see crash need to install the Kdump tool first, there will be kdump files that are not installed by default in

After ubantu 10.04 is installed and network connection is configured, the error message "reload" cannot be displayed when updating the software source is found! Similarly, when "sudo apt-Get Update" is used to update the software source, "E: cannot

[Email protected] bin]# yum-y install LrzszLoaded Plugins:fastestmirrorExisting lock/var/run/yum.pid:another copy is running as PID 1580.Another app is currently holding the Yum lock; Waiting for it to exit ...The other application Is:yummemory:37 M

Result Terminal tip:Unable to get lock/var/lib/dpkg/lock-open (11: Resource temporarily unavailable)E: Unable to lock the management directory (/var/lib/dpkg/), is there any other process that is consuming it? ”The solution is as follows:1. Terminal

In JavaScript, depending on the scope of the variables are divided into local variables and global variables, the directly defined variables are global variables, global variables can be accessed by all scripts; the variables defined in the function

In JavaScript, depending on the scope of the variables are divided into local variables and global variables, the directly defined variables are global variables, global variables can be all the script access; the variables defined in the function

Briefly describe the role of each directory: /bin:/usr/bin: Executable binary file directory, such as the commonly used commands ls, tar, MV, cat and so on. /sys:File system access to the Linux kernel /selinuxSELinux is a domain-type model

1. Could not get Lock/var/lib/dpkg/lock-open E:could not get Lock/var/lib/dpkg/lock-open (11:resource temporarily unavailable) E:unable to lock-administration directory (/var/lib/dpkg/), is another process using it? The reason for this problem may

Install make prompt with Apt-get "Unable to open lock file/var/lib/dpkg/lock" # Apt-get Install Vim E: Unable to open lock file/var/lib/dpkg/lock-open (2: No file or directory) E: Unable to lock the status list directory (/var/lib/dpkg/), please

Today, after dealing with the problem, you have nothing to do, and intend to practice shell scripting in Ubuntu in the virtual machine.Helpless, virtual machine system installed only VI, this editing software for us or is not accustomed to, so

Error during sudo apt-get install XXX via terminal installer:E:could not get Lock/var/lib/dpkg/lock-open (11:resource temporarily unavailable)E:unable to lock the Administration directory (/var/lib/dpkg/), is another process using it?This problem

When Ubuntu is installed on a VPS, the first command is usually to update the system software. However, in the process of running, there are such errors:E:could not get Lock/var/lib/dpkg/lock-open (11:resource temporarily unavailable)E:unable to

Error when using the terminal installer sudo apt-get install XXX: (or when uninstalling)E:could not get Lock/var/lib/dpkg/lock-open (11:resource temporarily unavailable)E:unable to lock the Administration directory (/var/lib/dpkg/), is another