Linux

Log in to the Linux server remotely using the SSH tool firstcommand line to look at the path, the following path is required to install the JDK and Tomcat, first copy the JDK and Tomcat program:Cd/usr/localLsInstall JDK: This is the Linux version of

Check that the current environment has the JDK installed before installing.Rpm-qa|grep JavaWhereis Java, java-versionIf you have an installation, uninstall it first:1.RPM-E--nodeps Jdk-1.8.0_102-fcs2.yum-y Remove Java JAVA-1.8.0-OPENJDKDownload the

Special Permissions : passwd:sSUID: when running a program, the owner of the corresponding process is the owner of the program file itself, not the initiator;chmod u+s FILEchmod u-s FILE if FILE itself has execute permission, then SUID is displayed

Linux Viewing system boot timeSometimes you need to see how long the Linux system is running, you need to know the last boot time, sometimes due to power failure or sudden outage of power supply, you need to check the Linux boot time/restart time;

1. Before you open the virtual machine--Edit the virtual machine settings in the second Selection tab of the shared folder set the directory that the machine needs to share. The default is under the/mnt/hgfs/directory.2, mount the virtual machine by

History-related commands!! : Executes the previous command!num: the "num" command in the Execution History command!-num: Executes the countdown num command in the history command!? String: Executes the most recent command containing string

SSH password-free login, make a summary!1. Installing the SSH service (skip)2. Scenario: Need to configure host a no password login Host BOn host A, perform the following:CD ~/.sshSSH-KEYGEN-T RSAGenerate Key FileCP id_rsa.pub Authorized_keys After

Boot is a generic term that indicates the process of initiating and so on.Uboot is a proper noun, which means a software called Uboot.AskI now have a project is like this, first burn boot.bin, and then burn write Uboot.bin, this is how Ah,

the chmod command is used to change the permissions of a file or directory. In the UNIX system family, the control of file or directory permissions is distinguished by reading, writing, performing 3 general permissions, and 3 special permissions are

Modify the NIC configuration file as follows:Onboot=yesipaddr=192.168.1.11netmask=255.255.255.0Nm_controlled=noTo restart the network card:Systemctl Restart NetworkTo view network card information:IP addReference Documentation:LINUX7 no ifconfig

[[email protected] boot]# ls -lh  --time-style=+ "%Y-%m-%d %H:%M:%S" total  13M-rw-r--r-- 1 root root  69K 2011-01-14 06:40:04  Config-2.6.18-238.el5pae-rw-r--r-- 1 root root  69k 2016-09-06 06:26:21  config-2.6.18-412.el5paedrwxr-xr-x 2 root root 1.

useradd (option)-c-d-D: Change the preset value;-e-f-g-g-M: Automatically set up the user's log in directory;-M: Do not automatically set up the user's log in directory;-N: Cancels the creation of a group named after the user name;-R: Establish the

First check to see if the VNC server is installedRpm-qa | grep VNC If not installed, you can use the RPM-IVH command or the Yum install After the installation is complete, modify the/etc/sysconfig/vncservers file, release the last two lines

1. Overview of IP addresses2. Configure IP AddressView IP AddressBind an IP address on the NICBind multiple IPs on the same NICBind a piece of NIC deviceModify or delete an IP addressIP Address OverviewHere is not much to repeat, refer to the

The first line describes the memory state used by the system in a global perspective:total--Total Physical Memoryused--already uses memory, this value is generally larger because this value includes the memory used by the cache+

Write drivers always run into things that are related to the cache.Log the interfaces used:The memory address used in the drive is usually the kernel address, when the user calls the driver interface, sometimes the address of the application is

Currently there is no Axel on the CentOS Yum source, we can download RPM package installation to http://pkgs.repoforge.org/axel/#wget-C http://pkgs.repoforge.org/axel/axel-2.4-1.el5.rf.x86_64.rpm#rpm-IVH axel-2.4-1.el5.rf.x86_64.rpmAxel How to

Download putty In the Start menu, locate Puttygen and start In Puttygen Click Generate Generate key, in this process all use the default settings, in this process requires the mouse to roam in the designated area to generate random numbers

Rm command, mv command Function: delete a file or directory.Syntax: rm [-dfirv] [-- help] [-- version] [file or directory...]Note: Be careful when using rm-rf. You are not prompted to delete the directory directly (the entire company may be

In linux, what is the difference between boot and uboot ?, Linuxuboot Boot is a common term used to indicate startup and other related processes.Uboot is a proprietary term, indicating a software named uboot.Question I have a project like this. I