Cloud Applications

Using Mkdir/home/u1 to create a folder home/u1Chownoracle/home/u1 indicates changing the directory owner   Create a file Mkdir aaa Mkdir-p aaa Create a folder Vi foo.txt Emacs foo.txt Echo "aaa"> foo.txt Cat> foo.txt Clear command >

Ubuntuserverntp time synchronization server installation and use 1. after the server 1apt-getinstallntp2 is installed, the service is started by default. if the server is not started, start it. /Etc/init. d/ntpstart3vi/etc/ntp. conf to

We can use the X11 clipboard to share text with other graphic interfaces. PS: X11 is a graphical environment for most desktop environments such as Gnome and KDE. X11 has two global cache zones to cache content between multiple applications. one is

Recently, I tried to use vim in Windows. after you download gvim and install it, you can use gvim to write text files and encrypt them to prevent others from seeing the text content easily. To prevent Chinese garbled characters, find the _ vimrc

The main post to be deleted must be counted in the log file, and the log file is separated by tab characters. assume that the log file name is delete. log. Save the format and save the data as follows, delete the date post type (11 as the Main Post,

1, View disk df-h2, view the memory size freefree [-m | g] by MB, GB display memory vmstat, view cpucat/proc/cpuinfo only look at the number of cpu grep & quot; modelname & quot;/proc/cpuinfo | wc-l4, view system memory cat/proc/memin...   1. View

Form: chinadu is a basic operation. some friends in the group ask, write it to a newbie, and write it in detail. I can't help it if I don't understand it. Log on to the user created during installation. the account created by my BT4 is

Step 1: Add a common user to create a user, set the password, modify the user, and delete the user: useraddtestuser create user testuserpasswdtestuser to set the password description for the created user testuser: the new user will create a user

Suppose your hard disk partition is/dev/sda1/boot500M/dev/sda2/40G/dev/sda3/home250G # (hd0, 2) In grub ), grub is counted from 0. Copy the Fedora-16-i386-DVD.iso to the/home directory and then copy the Fedora-16-i386 -...   Suppose your hard disk

Let's continue with the previous section. Fill_inquiry_response (), which is from drivers/usb/storage/usb. c. 266voidfill_inquiry_response (structus_data * us, unsignedchar * data, 267unsignedintdata_len... Let's continue with the previous section.

Fedora16 is guided by Grub2 by default, and there is a small change in the system startup sequence settings. If there are multiple systems and multiple kernel versions, you can adjust the default startup item as follows: & quot; vi/boot/grub2/grub.

Modify the network configuration file. by default, the ip address is automatically obtained. Sudovi/etc/network/interfaces file content: viewplainautoloifaceloinetloopbackmappinghotplugscriptgrepmapeth0autoeth0ifaceeth0ine... Modify the network

Ubuntu font beautification- and have just come into contact with LINUX, and they always feel strange fonts. maybe they are used to WINDOWS fonts; so I thought of replacing the LINUX font with the WINDOWS font. First, prepare the font for WINDOWS,

After restarting a redas5 machine in the company's test environment, it took a long time to go over ssh and ran to the front of the machine to check whether a disk detection error occurred: checkingfilesystems/dev/volgroup00/logvo100:

1. download the corresponding cd image from the official website and use the cd ROM for installation. No network is selected during the installation process. after the installation is complete, you can enter the console and cannot access the

CentOS5.5 default basic service explanation service name function default suggestion remarks NetworkManager is used to automatically connect to the network close switch does not use acpid power to the server etc detection management turn off no use

When I look at the code, I can see that an anonymous memory is mapped through mmap, but why do I have to map an anonymous memory? what is the use of the anonymous memory? I have been puzzled by this problem. Today, google has a lot of information to

Enter sudoapt-getinstalldconf-tools on the terminal to install dconf-editor, and enter the command dconf-editor to open org --- & gt; gnome --- & gt; gedit --- & gt; under dconf-editor; preferences --- & gt; encodings --- & gt; auto-detect enter

Press Alt + F2, enter the following content, press enter gconftool -- recursive-unset/apps/panel, press Alt + F2 again, enter the following content, and press enter rm-rf ~ /. Gconf/apps/panel press Alt + F2 again, then enter the following content

After a few days of hadoop testing and testing, it is difficult to monitor the cluster status. for example, you can only view the cpu attribute of datanode when running a large file. I found a ganglia management tool on the internet and decided to