Linux

The default grep searches all files, including files under Hidden folders. The --exclude-dir= parameter of grep is to exclude a directory, which does not contain the directory after the equals sign, so we can use this parameter to remove the

Sometimes when writing makefile, I don't know what some variables are or how to look at them, so I feel it's necessary to write a blog post about environment variables.If you want to view an environment variable of a name, the command is: ECHO $

Let's start by changing the location of the environment variables, where can we modify the environment variables?1./etc/profile: Effective for all users; This file sets the environment information for each user of the system, which is executed when

The Linux kernel was written by Torvalds (Linus Torvalds) in 1991. There are many interesting stories and the entire development process in the Linux development process. Let me take a look at its evolution:Linux is a set of operating systems,

Linux study 1 ---------- create a local yum source in Linux, ---------- linuxyum I just started learning and used it as a note to record what I learned I. mount a file Put the iso file in the virtual machine. You can choose to share the file or

Linux --- Configure script (configuration script), --- configurescript Configure script) From Wikipedia, the free encyclopedia Originated from Wikipedia A Configure script is an executable script designed to aid in developing a program to be run on

Linux-Configurescript) Configure script) From Wikipedia, the free encyclopedia Originated from Wikipedia A Configure script is an executable script designed to aid in developing a program to be run on a wide number of different computers. it matches

Linux Kernel netpoll framework and netconsoleAlthough it is related to the network, it is not part of the network protocol stack, Which is

Install wget in centos Yum-y install wget# Yum-y install setup this article # Yum install perl Searching for GCC...The path "" is not valid path to the gcc binary. wocould you like to change it? [Yes] If this occurs, it indicates that gcc has not

Linux User and user group management commands Linux User and user group management commands 1. users and groups Groupadd: Used to add a new group.The command format is as follows:Groupadd [-option] group nameCommon parameters:-G GID: Specify the GID

Change the root user password in centos7 single-user mode Step 1. Press the keyboard whenever you start the system and enter the following menu Select the first item and press "e" to modify it: Step 3: locate "ro" Step 4: Change "ro" to "

CentOS command for locating and searching filesCommand for locating and searching files Command FUNCTION command function which find the location of the file from path find all files that meet the requirements whereis find the path of a specific

CentOS command-ps: displays the snapshot of the current processCommand Format Ps [options] Instance A) view all processes huey@huey-K42JE:~$ ps aux | headUSER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMANDroot 1 0.0 0.0

Allows common users to temporarily obtain root permissions in CentOS Create two common users, kongzhong and xcg, and set the password [root@rhel1 ~] # useradd xcg [root@rhel1 ~] # passwd xcg Changing password foruser xcg. New password: Retype new

Centos 6.5 Startup Process Power-on BIOS self-check and load BIOS Information Check 0th channels, 1st sectors, read MBR (512 bytes) Start BootLoader (GRUB) Press e to enter edit mode. Press B to start booting. Root: Specify the boot

Install redis on CentOS7 Redis installation: $ wget http://download.redis.io/releases/redis-3.0.1.tar.gz$ tar xzf redis-3.0.1.tar.gz $ cd redis-3.0.1 $ make backend enable Server $ Src/redis-server & Set firewall (skip if firewall is not enabled)

Rz/sz command and description for SecureCRT installation in CentOS 1. Installation # Wget http://freeware.sgi.com/source/rzsz/rzsz-3.48.tar.gz # Tar zxvf rzsz-3.48.tar.gz # Cd src# Make posix (Note: This software installation is different from the

CentOS7.0 disable the default firewall and enable the iptables Firewall Operating System Environment: CentOS Linux release 7.0.1406 (Core) 64-bit CentOS 7.0 uses firewall as the firewall by default. Here we change it to iptables firewall. 1Disable

CentOS repeatedly executes the command watch to display the output in full screen The watch command periodically executes the command and displays the output in full screen. You can use the watch command to repeatedly execute a program to monitor

Hadoop starts jobhistoryserver Hadoop starts jobhistoryserver to view the historical running status of jobs on the web. Because the jobhistoryserver process is not started after hdfs and Yarn processes are started, you need to start it