Linux

Search for files1. Query--which for script file name 1.which This command is to query the file name of the "execute file" according to the path of the environment variable that the path is canonical to. 2 . File name of query--whereis, locate,

Ubuntu 14.04 Compilation kernel appears unable to locate package Ncurses-devel problem Resolution  First, when make menuconfig, you will be prompted without the Nucrses-devel module,So it was natural to think of sudo apt-get install

System centos6.3_64 BitPhenomenon: in learning Linux, want to use some commands, but I am not on this machine, want yum install but do not know which package the command belongs toIn the case of the rz command, there are two casesSituation One:The

RM: Used to delete a corpus or folder 1. The RM command without parameters is used to delete files without prompting 650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/72/A6/wKioL1XqoibjjeRKAAAxOKCK2aU612.jpg "title=" Image 1.png "alt="

IP command:IP [OPTIONS] OBJECT {COMMAND | help} Object:link Addr RouteLink:Show [Dev Name|up] Display link Information Specify interface started interface IP Link Show650) this.width=650; "src="

Linux has super Administrators and ordinary users, each user when the basic settings after the establishment can be tested by the following explanations Create a normal user [Email protected] ~]# useradd vforbox [[email protected] ~]#

1. What is cut?The main purpose of this article is to give the author and readers a deeper understanding of how the Linux system works, the general content is to take Linux apart from the components to assemble, and then complete a micro Linux

One: Post power-on self-testII: BIOS--->boot SequenceFollow the hardware boot setup in the BIOS to find the boot device sequentially.The first device that has a boot program is the device that is used for this boot.Three: MBR--->bootloaderMBR

One: Post power-on self-testII: BIOS--->boot SequenceFollow the hardware boot setup in the BIOS to find the boot device sequentially.The first device that has a boot program is the device that is used for this boot.Three: MBR--->bootloaderMBR

Bash Environment configuration:configuration file, the scope of effective, there are two categories:Global configuration:/etc/profile,/etc/profile.d/*.sh,/ETC/BASHRCPersonal configuration:~/.bash_profile, ~/.BASHRCBy function, there are two

If you have not set the root password at this point, you can set it as follows.Open terminal (terminal), enter:sudo passwd rootIt will prompt for "Enter a new UNIX password" and then follow the input.To enable root in the terminal later, enter

First, the creation of the file1.Touchthe Touch command is used to create a blank file650) this.width=650; "src=" http://s3.51cto.com/wyfs02/M00/72/9F/wKioL1XpdUORppxhAABHyP0P_FM447.jpg "title=" Image 1.png "alt=" Wkiol1xpduorppxhaabhyp0p_fm447.jpg "

Scheduling Task Categories:One-time Scheduled tasksAt,batchto host a job that runs in the future time:support for using job queues:The default is a queue;Ctrl+d SubmitAt command usageAt[option] ... TimeTime:(1) Absolute Timehh:mm,-------- The exact

1 BIOS time and system time issuesAfter installing CentOS, the system time is CST time, and the BIOS time is UTC time, so the system time will be 8 hours faster than the BIOS time. If you set the BIOS to boot automatically, it will always be a

Linux Disk ManagementHard disk:Mechanical HDDSSD solid-State drivesTrackSector:512bytesCylinder: The basic unit of the partition;MBR : Master Boot Record512bytes 446:bootloader 64:filesystem allocation table: identifies a partition 2:55AADisk

Linux Special permissions on the file system (SUID, SGID, Sticky)SUID :Any executable program file can be started as a process: depending on whether the initiator has EXECUTE permission on the program file;After initiating as a process, its owner

Linux permissions for the file system Owner (U) , belong to group (g) , other users (o) ;RWX, rwx, rwx-rwxr-xr-x. 1 root root 44680 June papslrwxrwxrwx. 1 root root 5 03:42 Parec-Pacatlrwxrwxrwx. 1 root root 5 03:42 Parecord-Pacat-rwsr-xr-x. 1 root

First you need to understand the concept of interrupts: an "interrupt" is just a signal that can be sent when the hardware needs to gain attention from the processor. The kernel maintains a registry of interrupt signal lines similar to the I/O port

Install and configure jdk + eclipse + android sdk, ubuntu android Five steps in total: 1. Install jdk 2. Install eclipse 3. InstallationAndroid-sdk 4. Install adb 5. Install ADT in eclipse   1. Install jdk It has been installed before. sudo apt-get

Linux Command memo instance (1) -- terminal output A terminal is a window for the user to interact with the shell environment. Most of the interaction results of all commands are directly displayed to the user from the terminal. Therefore, this part