Linux

The parameters of crontab are described in detail and how to view the syntax of the crontab log for future emergency. First, let's look at the super powerful figure: crontab parameter description:-e: Execute the text editor to edit crontab. The

Yum installation and cleaning Yum (all called Yellow dog Updater, Modified) is a Shell front-end Package Manager in Fedora. Based on RPM package management, You can automatically download and install the RPM package from the specified server,

Nfs: server 192.168.37.200 not responding, still trying solution problem: 1. You want to use NFS to load the root file system to the target board to debug the root file system. However, after the NFS service is configured on the host, you can see

When I used 12.04 before how to modify the background color in Ubuntu 10.10, it was easy to set the background color to the eye-catching mung bean color. I recently upgraded 12.04 and found that the system did not provide a visual modification tool,

When SecureCRT connects to the server and times out and is disconnected, the reason is that there are routers, firewalls, and idle connections between the client and the server beyond the specified time for security purposes. Or the server is set to

Log isolation in linux File System 1. The ext3 File System adds the log function on the basis of ext2 to ensure data consistency like a database. Ext2: Write block before, and then write inode! Ext3: added a log area (conducive to data consistency).

How to view the Linux kernel version [root @ localhost Desktop] # uname-a Linux localhost 2.6.32-131.0.15.el6.x86 _ 64 #1 SMP Tue May 10 15:42:40 EDT 2011 x86_64 x86_64 x86_64 GNU/linux indicates the current Linux the kernel version of the system is

How to optimize the Linux server after it is installed is not directly hosted in the data center after it is installed, instead, we need to perform a series of optimization configurations and security configurations. 1. It should be easy to

We should all know how to attach a linux hard disk. in Linux, there is no such concept as C or D, and some have only directories. Everything is based on directories. The root directory (/) is the most basic directory. There can be many directories

How to view CPU-consuming processes in aix first check who has the largest CPU usage: display the first 10 processes that have accumulated CPU usage # ps-e | head-n 1; ps-e | grep-v "TIME | 0: "| sort + 2b-3-n-r | head-n 10 displays the first 10

In linux, ssh 1.2.3.4 is slow to log on to linux. It takes a long time to display the entered password. The reason is that the sshd process will reverse resolve the domain name based on the ip address, resolve the ip address based on the domain name

In Linux, the separate installation of apache AB Apache service comes with the tool AB (ApacheBench) that should be used for stress testing. Corresponding to some simple stress tests, it is fully competent. This article describes how to obtain and

Nginx installation experience is nothing to worry about. Install nginx and familiarize yourself with the configuration. Write a small blog. My operating system is the centos cento platform compiling environment. Run the following command to install

Aix disk management LVM---AIX disk partition management PV --- physical volume essentially refers to a hard disk this hard disk can be a physical hard disk, can also be a logical hard disk, in aix, the disk name is hdisk in physical order, such as

The common log analysis commands in linux are as follows. log content: 211.123.23.20.--[10/Dec/2010: 09: 31: 17 + 0800] "GET/query/trendxml/district/todayreturn/month/2009-12-14/2010-12-09/haizhu_tianhe.xml HTTP/1.1" 200 1933 "-" "Mozilla/ 5.0

Remote debugging of gdb in Ubuntu -- warning: cocould not load vsyscall page because no executable was specified solution 1. first install gdbserver apt-get install gdbserver 2. compile the-g program gcc-g test_gdb.c-o test_gdb Source Code as

Talking about linux Performance Tuning eight: Remove unnecessary overhead talking about linux Performance Tuning seven: Cropping System Service http://www.bkjia.com/ OS /201307/228390.html in "talking about linux Performance Tuning seven: "Cropping

Large-capacity XFS Exception Handling today, some data exceptions were found when I checked the alarm. When I logged on to the backup machine to view the File status, I found that the disk space was full and inode was faulty, therefore, all the

The Service Management Facility (SMF) of the solaris Service is a software Service Management tool used in Solaris 10 and later versions of the Solaris operating system. SMF starts, stops, and manages services based on service relevance, and is

To configure squid3, you must first install apt-get update and then install apt-get install squid to configure and enable vi/usr/local/squid/etc/squid. conf 3.1 change listener port http_port 9090 3.2 change access control http_access allow all 3.3