Linux/Ubuntu root default password problem after Ubuntu is installed, the root does not have the default password, because you have not set the password for the root, your first user is in the admin group, he can set a password for the root user, so
The rp_filter in Linux and rp_filter in Linux are used to implement reverse filtering technology, that is, uRPF. It verifies the flow of reverse packets to avoid disguised IP attacks, however, it is prone to conflict with the Policy Routing of Linux.
To modify the date format of nginx, you must modify the default log time format of 2010-08-23 17: 27: 11Nginx in nginx logs to 23/Aug/2010: 17: 26: 44 + 0800 1. before modifying src/http/modules/ngx_http_log_module.c first place: {ngx_string
Ubuntu reports "fail to bring up eth0" cause: eth0 Nic does not exist solution: 1. sudo ifconfig-a // check the status of all NICs to check whether eth0 exists. The eth0 Nic should not be found in the result list. In addition to lo, there should be
The linux Command Line has six running levels to start the Linux operating system: 0: stopped, and the machine is disabled (do not set initdefault to 0 ). 1: single-user mode, like Windows 9x security mode. 2: multiple users, but not NFS.
How to Deal With grub rescue in Ubuntu has just been installed with ubuntu 12.04 recently. After a few days of multimedia and command line tossing, I have been very cool at reading from laruence these days, who knows the grub rescue problem occurred
Embedded linux kernel boot process 1. File System Principle root file system, various virtual file systems, and various format file systems. Ii. mount mounting principle www.2cto.com III. about linux Startup: 1. When uboot is started, pic is a point
Intel said it would release multi-core chip optimization programs available for SUN's OpenSolaris operating system.
This optimization tool named Threading Building Blocks aims to help C ++ developers reduce the number of code in the code writing
Solution: in linux, after the port of tomcat server. xml is changed to 80, tomcat cannot be started as tomcat.
Start tomcat on redhat (change the port in server. xml to 80)
Su-tomcat-c "$ CATALINA_HOME/bin/startup. sh"
The following error
When the host that serves as the DNS server accesses itself through the domain name, ping myself.mydomain.com to fail to connect, and the prompt "unknown host" is displayed. When you ping other machines, you can ping you.mydomain.com.
It is
Download related softwareMod_perl-1.27.tar download: http://perl.apache.org/download/index.htmlDownload the mod_perl compressed package. To download mod_perl 2.0, because I use APACHE2.X. If it is apache1.X, download mod_perl1.0.Unpack and
The new kernel can be downloaded in the http://www.kernel.org.
Copy linux-2.6.18.2.tar.bz2 to/usr/src/first.
Tar-jxvf linux-2.6.18.2.tar.bz2
Cd linux-2.6.18.2
Make mrproper deletes the garbage generated by the original compilation
You can use
There are too many servers managed by the company! Cacti was deployed a year ago, but cacti can only perform post-analysis work, but the real-time alarm function is not strong. Before cacti, nagios was installed on the monitoring PC, I just haven't
Reprinted address:
First, set the path for saving the SecureCRT Upload File
Options-> session-> Xmodem/Zmodem-> upload/download-> OK
Then check whether there are the sz rz commands in the system (the commands in FreeBSD are lrz and lsz)
If there
This section describes how to determine the normal shutdown problem. I have collected some information for you to view and hope you can get help.
When the system starts, a file is generated. When the system shuts down normally, the file is deleted.
On centos5.4, compile the kernel of High Version according to the general method after restart will error, solution is cp/boot/config-2.6.18-164.el5. in make menuconfig, and then modify. config: Enable the CONFIG_SYSFS_DEPRECATED option. During make,
The IP address configuration in the Linux Command Line is not as simple as that in the graphic interface. You need to manually configure the IP address. The following describes several configuration methods:
Effective immediately (expired after
I have heard of how to recover the password in single-user mode and CD boot. This method applies to redhat linux. However, in suse linux, the password is still required to enter single-user mode, therefore, it is restored in the single-user mode.The
I have been switching jobs for nearly two months. I have changed my career this time and will no longer work in the information security field. Therefore, I may not write any questions about information security in my Blog, some O & M and team
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