Some SourceInsight skills

1. select to change the background color Options-& gt; preference-& gt; windowsbackground-& gt; color to set the background color. 2. solve the problem of equal-width alignment of characters. the default SIS font is VERDANA, pretty. This web page

Basic knowledge about Linux: processes

Q1. what are the concepts of programs and processes? Why should we introduce the concept of a process? A: 1) A program is A common file and A collection of machine code commands and data. these commands and data are stored in an executable image on

The meaning of parentheses after the Linuxman command

We often see the following format when talking about the manpage of an object: mmap (2) shm_open (3, you can use the manman command to know that the number is, section. most unix-like operating systems use... We often see the following format when

One day learning Linux bootloader: GRUB

In the previous study, after reading the BIOS information, we will go to the MBR of the first boot device to read the bootloader. The function of bootloader is to load the kernel. Next, let's take a look at this bootloader. Let's first look at the

Use dd and gzip to export hard disk images

You can use & gt; to generate a gzip file to save space and time. you can add the-9 parameter to gzip. Whether the use of the bs1M parameter will affect the data is to be evaluated. this time, I will not be greedy, but it will be slower. to ensure

Hide permissions on linux ---- chattrlsattr

You can add and hide permissions to files with special requirements (such as server logs. These hidden permissions include: Appendonly (a), compressed (c), nodump (d), immutable (I), datajournalling (j), securedeletion (s... You can add and hide

Vim development environment in linux

For more information about the ROR editor in deep LINUX, refer to ghost. ROR editor for deep LINUX Reference: http://www.2cto.com/ OS /201110/107773.htmlVim home: http://www.vim.org/index.php 1. install the nerdtree. plug-in vimGit clone git: //

Problems with upgrading fedora16beta

I directly preupgrade from f15 and it was quite smooth. I encountered a small problem. I was unable to log on. I just installed it and restarted it. I found that the black logon interface had changed, but the password I entered was always Oh, No,

Basic knowledge of Linux: Memory management

Q1. why is the address space of a process divided into kernel space and user space? A: the virtual address space of Linux is 4 GB. the kernel divides the 4 GB space into two parts. the larger 1 GB space (the virtual address 0xC0000000 to 0 xFFFFFFFF)

Introduction to Linux scheduled tasks

Cron is a scheduled execution tool in Linux. it can run jobs without manual intervention. Since Cron is a built-in service in Linux, but it does not automatically get up, you can use the following methods to start and close this service:/sbin/serv...

Basic knowledge about Linux: interruptions and exceptions

Q1. what is interruption? What is an exception? What is the difference between the two? A: 1) interrupt control is generated to overcome the low processor efficiency caused by using the program query control service for I/O interfaces, its main

Linux network optimization

After the Linux system is installed, the default TCPmemory parameter is set to 128 kB. when too many processes communicate over the network, exceptions may occur. You can use the command to expand memory usage: www.2cto.com #

Chrome font settings in Linux

I tried a variety of methods and set the font in the browser Preference. although ChangeFont is installed with the plug-in, it is not very nice to force all the font changes, besides, the effect is not very good. I tried the following method, and

Command for viewing the version number in Linux

1, view the kernel version command: cat/proc/versionuname-auname-rcat/etc/issuemanuname2, view the linux version: Copy the following: 1) log on to the server to execute the lsb_release-a, all version information, for example, [root@3.5.5Biz-46... 1.

Configure vsftpd virtual users under SUSE11

Environment and software SUSELinuxEnterpriseServer11 (x86_64) vsftpd-2.0.7-4.17.1.x86_64.rpm modify vsftp configuration file parameters (/etc/vsftpd. conf) anonymous_enableNOlocal_enableYESchroot_list_enableYES... Environment and software SUSE Linux

Centos5.3yum install Tomcat Java

I installed tomcat and jiava with yumintalltomcat5 today. So where is tomcat installed? How to Start tomcat? How can I deploy my own website in Linux? With the above three questions, we began to explore. First, let's go to the/usr/bin directory and

CentOS5.5Nginx + JDK + MySQL + Tomcat (jsp) installation success stories

In Centos5.5, it is very easy to install Nginx + jdk + mysql + tomcat. You only need to install the environment package and nginx in yum, decompress and install jdk and tomcat, configure the profile file, server. xml, and nginx. conf files. The

Install JDK and Tomcat in CentOS5.5

1. check whether the built-in JDK of CentOS is installed. if you have installed and uninstalled # rpm & amp; ndash; qa | grepjdk # rpm & amp; ndash; qa | grepgcj # yum & amp; ndash; yremovejava-*-gcj-comat2. install JDK download

Basics of Linux: kernel synchronization

Q1. what is a critical section? What is competition? What is synchronization? A: 1) the critical section (criticalregions) is the code segment for accessing and operating shared data. it is usually unsafe for multiple kernel tasks to concurrently

Basic knowledge of Linux: File system

Q1.what is the Linux directory tree structure? What is the difference between it and Windows's directory tree structure? Why does the Linux file system adopt a fixed directory format? A: A file is an abstract concept. it is A warehouse that stores

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