Linux

Work needs to use SECURECRT to do some file operations on the server, more master some of the small Linux skills will be helpful to improve the efficiency.Some common commands for SECURECRT are recorded here. ./Current Directory ... /parent

Turn from: http://blog.csdn.net/orclight/article/details/8645545 1. Shutdown, restart, and logoff of the systemShutdown-h now Shutdown system (1)Shutdown-h hours:minutes & Shut down system at scheduled timeShutdown-c Cancel system shutdown at

1. Introduction to Clusters: Cluster (cluster) technology is a new technology, through cluster technology, it can obtain the relatively higher benefit in performance, reliability and flexibility in the case of low cost, and its task scheduling is

Linux Tomcat 6 Installation and configuration(1), to the Apache official website (http://tomcat.apache.org/download-60.cgi) download apache-tomcat-6.0.29.tar.gz files. (2), decompression and unpacking Enter command: TAR-ZXVF

Turn from: http://www.jokcn.com/read/66785.htmlAs Linux develops today, many features can already be done in a visual interface. In many cases, however, commands are useful, especially for Linux system administrators who can communicate with other

In front of the netstat expanded analysis and description, under Linux, there are other analytical tools. Tcpdump is LinuxA grasping bag tool commonly used in the command line, recording the usual way, Mac OS。 Tcpdump This function parameter many,

Total CPU Utilization---vmstat per CPU core Utilization---MPSTAT CPU utilization per process---top/pidstat information source:/proc/stat and/proc/$pid/stat CPU mpstat/top/pidstat MEM free,/proc/meminfo,/proc/$pid/maps NET sar/ethtool/tc/netstat IO

First of all, the need for software, Xming (used to support x11-forwarding, do not know how to check yourself) Xshell (a client of SSH) Pycharm (development environment for Python projects) First of all, install the xming, just remember the display

Server Model[[Email protected] ~] "manufacturer| Product "Operating System [[Email protected] ~] # cat/etc/redhat-release . CentOS Release 6.5 (Final) View operating system release details[[Email protected] ~] # lsb_release

Calculate 1+2+3+ ... How much is 100?Answer: Echo {1..100} | Tr ' + ' | BcWhich of the following options differs from other items?A. app.sh > F1.log 2>&1B. app.sh 2>&1 >f1/logC. app.sh 2>f1.log 1>&2D. app.sh &>f1.logA: B option, b option output

If you use the dynamic link library. So file that you manually generated, but this. So file is not added to the library file search for the path, the program may run with a situation where the dynamic link library could not be found.You can view the

For additional operations on logical volumes, see:The establishment of logical volumes in LinuxExpansion and reduction of logical volumes in LinuxRemoval of logical volumes in Linux　　　LVM also features snapshots, similar to the System Restore point

Basic commands for 1.linux systemslsView the contents of your current folderpwdView your current locationCDOpen File directoryTouchCreate a file,If the file does not exist,Create a new filemkdirCreate a folderRMDelete the specified fileClearClear

Chapter 1th Linux File properties1.1 Failure Cases:Low disk space no space left on deviceInode Number file type permissions hard link number belongs to the main genus GroupIndex node owner belongs to family size modified time file name (not file

1, RM-RF/*, Operation and maintenance engineers run the core idea;2, useradd user name-u-o 0, establish the same account as the root administrator account ID, so that the system does not recognize the Administrator account, unable to start;3.

Installation Environment:VMware Workstation14CentOS 7.5.1804Minimized installationInstallation process:After the system installation is successful, the network configuration, I use the dynamic IP configuration. First you need to know the directory

Summary of permissions: for ordinary files:r：read 可读，表示具有读取、阅读文件内容的权限w：write可写，表示具有新增、修改文件内容的权限（是否可以删除看上级目录的权限）1） 如果没有r，那么vim会提示无法编辑（可强制编辑，echo可以重定向编辑或追加）2） 如果没有r，那么执行他也会提示权限不足3） 删除文件（修改文件名等）的权限是受父目录的权限限制的，和目录本身权限无关x：execute 执行权限，For the

1 DHCP1.1 DHCP Service IntroductionDHCP (Dynamic Host Configuration Protocol), which is used to dynamically assign IP addresses and configuration of the associated network environment (gateway and DNS Server information) to hosts on a network

The Linux server builds the jdk1.8 environment, but because jdk1.7 is already installed on the server, it does not work after installing jdk1.8.Found some information on the internet, and combined with their own actual operation, organized a set of

First, the configurationChange the Java_home path in the configuration below to your path.Export Java_home=/usr/lib/jvm/java-1.8.0-openjdk-1.8.0.144-0.b01.el7_4.x86_64export JRE_HOME=${JAVA_HOME}/ Jreexport