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SIMPLE INCREMENTAL BACKUP USING rsync COMMAND Backups can be classified to two types.They are 1)Full backup The entire data will be backup will be taken every time 2)Incremental backup Incremental backup take the full backup at the first time ,from the second time it will compare the files in first backup and the files in […] linux log files, location and description Linux stores logs of almost everything from user accounting to system halts. These logs are always useful to debug problems or track the loophole of any configurations. Logs are the records of system activity to assure the faults, traffic activities, configuration logs, user activity logs. Main Linux log files […] Either they are intentional or not, system misconfiguration can lead to very big problems. For example : Corruption or deletion of important system files Integrity failure (ex. eavesdropping on private data) Privilege escalation Backdoor/rootkit installation To avoid these problems you should regularly scan your system for known “misconfiguration patterns”. This article will explain how to […] Usually it will hang after Starting certmonger: [OK] Startup the hanging machine (H1) From another machine do: > ssh H1 > su > mv /etc/X11/xorg.conf /etc/X11/xorg.conf.bak Now restart H1. You can have more explanations by doing a “tail -n 200 /var/logXorg.0.log” on the hanging machine. just found a strange bug when installing Oracle Linux 6.5. […] There are times when you really want to get rid of SSH password authentication, however SSH is VERY picky about permissions etc. I just found out that there’s a tool for that in all Linux boxes! As promised, the two simple steps: Create your keypair (assuming you don’t already have it ready) $ ssh-keygen -t […] Rootkit Hunter (rkhunter) is a Unix-based tool that scans for rootkits, backdoors and possible local exploits. Rootkits are self-hiding toolkits secretly installed by a malicious intruder to allow that user to gain access to the server. Rootkit Hunter offers protection by comparing SHA-1 hashes of important files with known good ones in a online database […] Running FSCK on an LVM (Logical Volume Manager) using Linux Rescue Disk i am not a linux expert and so when I have problems from time to time I usually have to go searching for the answer. It usually takes me looking at several articles to get my answer and when I am finished I […] In the event your Linux box experiences disk or file system issues you may receive a “Give root password for maintenance” prompt upon reboot. If you have your root password you can login but in the event your using ‘slide’ or ‘sudo’ for wheel access or you’ve just mis-placed your root password – you’ll need […] Time Based Restrictions These examples will limit the login times of certain users. See /etc/security/time.conf for more information/examples. In order to place time restrictions on user logins, the following must be placed in /etc/pam.d/login: account required /lib/security/pam_time.so The remaining lines should be placed in /etc/security/time.conf. 1. Only allow user mohan to login during on weekdays […] CentOS6.6 2?vsftpd-2.2.2 Second, the installation $ yum install -y vsftpd [root@oracledbserver mohan]# yum install vsftpd Loaded plugins: fastestmirror, refresh-packagekit, security Setting up Install Process Loading mirror speeds from cached hostfile * base: mirror.vodien.com * extras: mirror.vodien.com * updates: mirror.vastspace.net base | 3.7 kB 00:00 extras | 3.4 kB 00:00 updates | 3.4 kB 00:00 Resolving […] |
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