Linux

Talking about linux Performance Tuning 13: Performance Analysis Related Concepts talking about linux Performance Tuning 12: Red Hat optimization strategy Tunedhttp: // www.bkjia.com/ OS /201307/229281.html about processor performance indicators.?

Killing processes in batches is a must. Sometimes, thousands of processes may come out on linux servers. We can see them through the ps command and make statistics, but it is still difficult to kill them. Old method: ps-ef | grep process_name |

Ubuntu 12.04 LTS installation and configuration diary was installed with Ubuntu 13.04 yesterday, and a major BUG that bumblebee (dual-Card Driver Management) cannot be apt-get, and dashboard cannot enter commands, decide to install 12.04LTS back.

Gnu c program execute path trace method preparation tool tar-latest.tar.gz graphviz gprof2dot. py decompress tar-latest.tar.gz $ tar-zxvf tar-latest.tar.gz $ cd tar-1.26/src under ubuntu. copy the py file to the current directory and run configure

I believe many new users who want to learn linux are wondering what linux learning courses are good. The following small series will collect and organize several important tutorials for you to learn, if you want to learn more, go to the wdlinux

In linux, vim configuration document set nocompatible "Disable vi compatibility mode syntax on" auto syntax highlight set number "display row number set ruler" enable status bar ruler set shiftwidth = 4 "Settings the width of the command to move is

To install the jdk ------- * .tar.gz package on Ubuntu, first decompress * .tar.gz. The specific method is tar-xzvf * .tar.gz. Assume that the folder obtained is java and the command to move it to/usr/is: sudo mv java/usr/and then set the

When logging SSH operation logs in Linux and logging on to the management host using ssh, you can save commands and outputs for ssh operation to the specified log file to facilitate subsequent viewing of operation logs. When logging on to the host

Next, I learned special permissions for linux Files: SUID, SGID, and Sticy Bit. Previously, my understanding of file management was limited to UGO management. I learned it again and recorded what I understood. First, list the permissions represented

Crontab causes file descriptor depletion in Linux. scheduled tasks in the system cannot run after a period of time. The system command shows that the system has a large number of sendmail processes, which causes the file descriptor to run out. The

For Linux systems/bin,/usr/bin,/sbin,/usr/sbin, and root, if the newly installed system runs commands such as shutdown and fdisk, prompt: bash: command not found. First, consider whether the root $ PATH contains these environment variables. The main

WDCP hide Nginx version All major portals hide the nginx version number. It makes sense to do so. So let's also learn.Two steps in total!Step 1:First go to/www/wdlinux/nginx-1.4.1 (I upgraded the version)/conf find nginx. conf fileOpen tcp_nodelay

Telnet idle time-out automatic exit settings set telnet idle connection after a certain period of time automatically exit the current session Setting Parameter TMOUT, time unit: seconds (s) for example: TMOUT = 21600, the telnet connection is

Before reading this article, you can also refer to my previous article titled file transfer between a PC and a mac vm in iOS. I. VM Tools InstallationChoose VM --> install vmware tools from the menu of VMWare workstation and execute the following

Atime mtime ctime 1 in linux. mtime (medify time): The last time the file or directory was modified. ctime (chang time): The time at which the last file or directory (the original data is changed: attribute) is changed, for example, the time when

The configuration of Nginx log files involves two commands related to splitting Nginx logs: 1. log_format is used to set the log format; 2. access_log is used to specify the storage path, format, and cache size of log files. 1. use the log_format

Ubuntu 12.04 error: As MaxReports restrictions have been reached, the apport report was not written. Upgrade ubuntu10.04 to 12.04 last night. The online upgrade is used. Today, the software is finally downloaded, the software is installed, and the

Mounting Linux Files Based on SUSE linux is similar to windows file sharing. A shared directory is configured on the host, and the client can access the shared directory through the network. The following uses SUSE11 as an example to briefly

Install1. Check whether cvs is installed.Rpm-qa | grep subversion2. InstallationYum install subversion3. test whether the installation is successful./Usr/bin/svnserve -- versionIf the following message is displayed, the installation is successful.---

Use Vim to compare the content of the two files. use vim's comparison mode to open two files: vim-d file1 file2 or vimdiff file1 file2. if the file file1 has been opened, open another file file2 for comparison: vert diffsplit file2 if the vert