Linux Network Security Tips
Date: 2001-6-15
Author member name: WANGSB email:wangshoub@yeah.net
Network security is a very important topic, basically you run the service backstage more, you can open more security vulnerabilities. If configured
Some garbled files cannot be managed by ordinary RM commands.can be deleted by deleting the I node.
[root@yusky]# ls??,? k?k?ͨa*.? J]?k?φ?? P??? Z?b? A? R??? X?? U??.????? *h@b? T??? xs* View the I node of the garbled file[root@yusky]# Ls-liaha54263
have been playing svn,git in recent years has been a gray popular, a little try to play under:
[root@git ~]# git config--global user.name ' Byrd ' #全局设置用户[root@git ~]# git config--global user.email ' root#t4x.org ' #全局设置用户邮箱[root@git ~]# git config-
Grammar
Format: * * * * * * * * * * * * * * * * The task of the Year
For example, the following example performs a task every minute:
*/1 * * * */usr/bin/php/users/huangyibiao/desktop/shell/test.php
Look at this crontab down here.
* * * * * * */usr/bin/python/home/zhangdapeng/del.py >/dev/null 2>&1
Generally safer, without disturbing the case is like this
But debugging is inconvenient, the error, do not know why the error, can't find the
Environment:System environment: CenetOS6.4 x86_64
One, what is s.m.a.r.t.
Smart is a kind of disk self analysis detection technology, as early as the end of the 90, the basic popularity of each hard disk (including IDE, SCSI) in the running, will
Use:
Give the next server administrator some indication that they can manage the server. I was prompted to do the CD, but I don't know how to use the child shell to control the parent shell's directory. But now it's better to know more about the
Friends who are often exposed to Linux, especially those on a server that is shared by many people, may often encounter problems like this:Received a disk alarm, said that the XXX partition is full, then log on to the server DF A look, found that
Vagrant Solve the problem
A little bit of team collaboration development experience should know how important the team collaborative development environment is, at first, everyone's development environment is Windows,max OS X,ubuntu,centos, and so
In the toss automatically back to the mailbox of the script, the implementation of the sudden VPs became very card, Ping found the delay of the VPS soared to the 2000+, from the Aliyun backstage monitoring to see the maximum uplink bandwidth has
Solution:# Install Yum-complete-transaction (this is a program that can discover unfinished or interrupted Yum transactions)Yum-y Install Yum-utils# clear Yum CacheYum Clean All# run Yum-complete-transaction, clean unfinished
Give me the phone, I was decisive first let him put the system partition, the data disk partition first part, and so into the system after I remotely look at the problem. Then he does not divide the data disk after the normal installation of the
First download Software Installation
SECURECRT is the charge software, if you support the genuine words to the official website to buy. Or Baidu a bit more than n cracked version, random download a hint to crack can be used
New Connection
The performance impact of the Linux cache Pagecache is critical, but how well we use it in the actual system, especially with regard to the utilization of each device.
From the following figure we can see very clearly:
We know that IO request is
Displays the size of each file under the current directory
The code is as follows:Ll-h(relative to LS-LH)
Displays the total file size of each folder under the current directory
The code is as follows:ls | Xargs Du-sh
Space usage of the current
I. Planning: Data Synchronization source: nfs-s1 IP: 172.16.1.10 Directory:/data/images Nfs-s2 IP: 172.16.1.20 Directory:/data/images II. Configuration steps: 1. Configure rsync daemon in the nfs-s2 and start. The nfs-s1 configures the rsync client.
Currently, VM instances are more and more widely used. System images of some VM instances do not automatically mount swap partitions, which will definitely affect the performance of the machines, The solution is as follows: 1. Some VM instance
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