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Background: Server: Dell Three raid groups: SDA (raid1) System Disk SDB (RAID5) application data disk, in use SDC (RAID5) not used, file system to be created, Mount LVM not used Operating System SuSE 11 Enterprise Problem description: After Dividing SDC into partitions (with only one partition), create a file system, mkfs-T ext3/dev/sdc1, run the command, and the network is disconnected. Process Termination. Log on to the recovery network an

1. Backup all user data in the volume to be removed(Use fbackup, cpio or tar Backup utilities as appropriate .)2, determine the names of the logical volumes residing in the volume groups to be removed# Lvdisplay/dev/vgxx/lvol *3. unmount all logical volumes in the volume group to be removed# Cd/# Umount/dev/vgxx/lvol *4. Remove the logical volumes found in step2 from the volume group# Lvremove/

Why do I find that every time I build a hot compilation is different, but this time should be considered the most scientific way. webpack.config.js only need to pay attention to increase the thickness of the place. This is the core, and the rest is just a demonstration of the actual situation.varWebpack = require ("Webpack");varHtmlwebpackplugin = require (' Html-webpack-plugin ')); Module.exports={entry:{JQ: [__dirname+ '/src/js/jq/jquery-1.9.1.js ', __dirname+ '/src/js/jq/jquery.urianchor-1.1

Recently learning a VUE-CLI project requires data interaction with the background, where local JSON data is used to mimic the background data interaction process. However, there is no dev-server.js file found under the build folder because the new version of Vue-webpack-template The dev-server.js has been removed and replaced by the Webpack.dev.conf.js file, so local access can be configured in Webpack.dev.

Some people think that the background daemon to do this kind of redirection operations waste resources, we recommend that the 0, 1, 2nd sentence directly closedHandle down, which is very incorrect. If they are actually closed, some ordinary data file handles will waitIn 0, 1, 2. In the case of a number 2nd handle, some library functions fail to output an error message to the 2nd handle, which breaksBad old data.1, the following code will be stdin, stdout, stderr redirect to/

The shell can often be seen: >/dev/null 2>1Eg:sudo kill-9 ' ps-elf |grep-v grep|grep $1|awk ' {print $4} ' 1>/dev/null 2>/dev/nullThe result of the command can be defined in the form of a%> output/dev/null represents an empty device fileWhere does the > delegate redirect to, for example: echo "123" >/home/123.txt1 mean

In the process of learning Linux, often see some terminal commands or programs have ">/dev/null 2>1" appear, because have met several times, in order to understand clearly, may wish to spend some time Baidu or Google related knowledge.0: Indicates keyboard input (stdin)1: Indicates standard output (stdout), system default is 12: Indicates error output (stderr)Command >/dev/null 2>1 = = Command 1>/

Error resolution in Dev C + + [Linker error] undefined reference to ' __cpu_feat ...Solve the coexistence problem between NOIP environment guide and Dev.After loading the NOIP test environment Guide, when I wanted to use the previous dev C + + compiler, I found that there was a problem with the compilation and couldn't find the library that compiled the connection.The error message is as follows:[Linker Err

0 Info It worked if it ends with OK 1 verbose cli [' G:\\program files\\nodejs\\node.exe ', 1 verbose CLI ' c:\\users\\ace R\\appdata\\roaming\\npm\\node_modules\\npm\\bin\\npm-cli.js ', 1 verbose CLI ' run ', 1 verbose cli ' dev '] 2 info using npm@5.6.0 3 Info using node@v8.9.4 4 verbose run-script [' Predev ', ' dev ', ' Postdev '] 5 info lifecycle Hello@1.0.0~prede v:hello@1.0.0 6 Info Lifecycle hello

Why use/dev/null 2> 1 This method is used. this command redirects all standard output and error output to/dev/null, that is, it discards all generated information. next, let me talk about it for you,Command> File 2> FileAndCommand> file 2> 1What's the difference.First ~Command> file 2> File The standard output information and error output information generated by the command are sent to the file.Command>

Tmpfs File System in Linux (/dev/shm) Introduction /Dev/shm/is a device that uses the tmpfs file system. It is actually a special file system. In redhat, the default size is half of the physical memory, and mkfs format is not required for use. Tmpfs is a memory-based Virtual File System on Linux/Unix systems. Tmpfs can use your memory or swap partition to store files (that is, its storage space is in virtua

Environment variables need to be added Add method: Right-click my computer> Properties> advanced> environment variable User variables. The environment variables to be added include:1. Path: C:/dev-CPP/bin. If this variable already exists on the computer, add "; C:/dev-CPP/bin" to the original variable, the path must be separated by semicolons.2. LIBRARY_PATH: C:/de