illegal opcode linux

additions:some time ago because the service needs to be redeployed, and the previous system was installed by others, Personal not very much, hard disk partition confused, disorderly unbearable, just catch up with the opportunity To the computer room to reinstall the operating system, the result, the horror of things appear The blade model is BL280C,16GB memory and the operating system is red Hat Enterprise Linux 5.4 x86 64 bit, Prepare the equipm

Illegal to add users and illegal to enter the remote operation of users!01. Illegal User Intrusion SystemThe simplest way is to check with the W command.If an illegal user is confirmed to be present within the system, the user-related process can be immediately kill.kill-9 ' Lsof-u xxx ' # # #杀掉非法用户所启动的进程userdel-r XXX

Block and kill illegal IP addresses in a Linux system-Linux Enterprise Application-Linux server application information. For details, refer to the following section. Concept After deciding to use ARP binding, we should consider the implementation of ARP. ARP (Address Resolution Protocol) is used to notify the recip

Linux's service hosts are exposed to the Internet and are often harassed by illegal users. such as weak password scan, exploratory login; All this poses a threat to Linux hosts. The following script will shut out the illegal user. Principle: Get an attempt to log on to the Linux host user's IP, cut the number of fail

Batch conversion GBK file to UTF-8 encoding method under LinuxView File EncodingFile-i filename1. Recursive conversions (including subfolders)Find Default-type d-exec mkdir-p utf/{} \;Find Default-type f-exec iconv-f gbk-t UTF-8 {}-o utf/{} \;These two lines of command convert the file under the default directory from GBK encoding to UTF-8 encoding, the directory structure is unchanged, and the transcoded file is saved in the Utf/default directory.2. ConversionThe command format is as follows$en

sql>!cat/etc/issueEnterprise Linux Enterprise Linux Server release 5.5 (Carthage)Kernel \ r on an \msql> SELECT * from v$version where rownumBANNER--------------------------------------------------------------------------------Oracle Database 11g Enterprise Edition Release 11.2.0.1.0-productionWhen you open the listener today, the following error is reported:Tns-12560:tns:protocol Adapter ErrorTns-00507:con

comStart monitoring again normally:[[email protected] ~]$ lsnrctl Startlsnrctl forLinux:version11.2.0.1.0 -Production on Geneva-APR- - ,:Panax Notoginseng: -Copyright (c)1991, the, Oracle. Allrights reserved. Starting/U01/App/Oracle/Product/11.2.0.1/Db_1/Bin/tnslsnr:please Wait ... Tnslsnr forLinux:version11.2.0.1.0 -Productionsystem parameterfile is /U01/App/Oracle/Product/11.2.0.1/Db_1/Network/Admin/Listener.oraLogMessages written to /U01/App/Oracle/Diag/Tnslsnr/Rusky-oracle11g/Listener/Al

Release date: 2011-11-28Updated on: 2011-11-29 Affected Systems:Linux kernel 2.6.xDescription:--------------------------------------------------------------------------------Bugtraq id: 50811Cve id: CVE-2011-4347 Linux is the kernel of a free computer. The kvm_vm_ioctl_assign_device function has an illegal access vulnerability. attackers who can access the affected applications can exploit this vulnerabi

2012-02-05 wcdj 1. Stack knowledge required for debugging 2. Memory Corruption caused by illegal array access Stack knowledge required for debugging Stack is one of the memory regions in which the program stores data. It features a LIFO (last in first out, last in first out) data structure, that is, the data that is put in the later is first retrieved for backup. The operation to store data in the stack is called push (push), and the data retrieved f