Linux

Linux I/O performance monitoring tool iostat detailed description of Linux system performance problems, generally we can use top, iostat, free, vmstat and other commands to check the initial problem. Iostat provides richer IO performance status data.

In linux iptable settings, the following figure shows the basic network conditions: the host has three NICs: eth0 192.168.0.1/24 Intranet eth1 192.168.20.1/24 Internet eth2 192.168.50.1/24 meeting room network ppp0 (set to dial-up Internet access on

How to copy and move overwrite files in Linux without prompting # vi ~ /. Bashrc if you see the following content, the following commands will be executed using aliases, that is to say, the-I parameter alias rm = 'rm-I 'alias cp = 'cp-I' alias mv = '

Solution to the Problem of Wired connection failure after the upgrade in ubuntu due to laboratory requirements have to install a relatively low version of the system, so it takes time to install a ubuntu10.04 system, however, after the installation

Linux beginners, some practical commands cd ~ Enter the root directory cd/enter the root directory make clean make error, clear rm-rf * Delete all folders rm-rf *. * Delete all files: rpm-qa | grep pcre check whether the pcre package netstat-apn has

Install Jdk in RedHat9 and deploy project 1. first download jdk-6u45-linux-i586-rpm.bin from the official website 2. use an ssh client to upload data to a directory on the server. 3. chmod + x jdk-6u19-linux-i586-rpm.bin 4 ..

Configure mail server in linux 1. Configure yum Installation Tool ① enter the yum directory [root @ bj ~] # Cd/etc/yum. repos. d ② configure yum. repo [root @ bj yum. repos. d] # cprhel-debuginfo.repo yum. repo convert yum. modify the repo to [root @

Vi editor command (copy) I. Unix editor overview editor is one of the important tools for using computers. In various operating systems, editors are essential components. Unix and similar ix Operating System series provide a series of ex editors,

Ubuntu 13.04 install gitlab 5.3 ubuntu and Debian is a little different, Because ubuntu installed sudo/python by default, and the gedit editor is easier to use than vim... so there is no code for installing sudo/python and vim... start now... i.

Analysis of Linux LD_LIBRARY_PATH (I) Historical Background nowadays, most of the software comes with a shared library, or for security reasons, or based on commercial considerations such as: ORACLE: $ ORACLE_HOME/lib MySQL: $ HOME/mysql/lib is

AIX user management user and group management/etc/passwd/etc/security /. profile/etc/security/limits/etc/security/passwd/etc/security/user/usr/lib/security/mkuser. default user attribute lsuser-f root create user useradd test smit

Modify the CentOS release information to bypass the operating system of the disk array multiplexing software to check the implementation of the project. The entire system uses the disk array, and then the disk array uses the form of load,

Svn command usage in linux 1. Run the file checkout to the local directory svn checkout path (path is the directory on the server) for example: svn checkout svn: // 192.168. 1.1/pro/domain Abbreviation: svn co2, add a new file to the version library

Mount usage-common partition Loading Method mount mounting the iso file: Shell code # mkdir/mnt/iso1 # mount-o loop linuxsetup. iso/mnt/iso1 can directly read iso files without the virtual optical drive in linux. In general, the file of the CDROM

Ubuntu compiles and installs doxys. the linux version downloaded from doxys is x86, and sometimes it cannot run on 64-bit Ubuntu. Therefore, you need to download the source code for compilation. Download: [plain] wget

Introduction to using the/proc file system to access the Linux kernel:/proc file system is a virtual file system, through which you can use a new method in Linux®The kernel space communicates with the user space. In the/proc file system, we can read

I have long wanted to play with Linux when I use an alias for a command in Linux. Some time ago I could not bear to install Ubuntu12.04. at first I felt very good. But due to the serious lack of software, I want to install it back to windows, it is

Linux Performance Tuning 17: process binding and interrupt binding talking about linux Performance Tuning 16: Nic binding http://www.bkjia.com/ OS /201307/230472.html 1. use taskset to set the CPU affinity taskset to search and set the CPU affinity

Aliyun hard disk mountingThe Network Problem of the company's servers is unbearable. The aliyun server, which has been suspended for half a year, was finally enabled today.When I purchased a 40 Gb hard disk space, I first checked a hard disk and

[Nagios monitoring] NRPE: the reason for Unable to read output and troubleshooting the normal operation of the nrpe monitoring terminal definition command, monitor run #/usr/local/nagios/libexec/check_nrpe-H 117.121.9.200-c check_oracle_tablespace