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How To Play .ram(Real Audio Metadata) In Redhat/Ubunto

Posted by | Feb 2, 2010 | |

The .ram (Real Audio Metadata) is an properitery audo formate from Real media network’s which is having it’s player called Real player.This format is a stream media format, ie media is stramed from other source. So how to play this file in Linux?Ans : To play this we have to install mplayer. you may get doubt that why I am saying mplayer, i don’t suggest to you a properitery real plyaer which will be annoying you all sorts of ads etc. mplayer is a good open source software with which you can play almost every formate. This is my favorite player after VLC player, which is once again a open source.These are the file formates supported by mplayer1. Physical media : CDs, DVDs, Video CDs2. Container formats : 3GP, AVI, ASF, FLV, Matroska, MOV (QuickTime), MP4, NUT, Ogg, OGM, RealMedia3. Video formats : Cinepak, DV, H.263, H.264/MPEG-4 AVC, HuffYUV, Indeo, MJPEG, MPEG-1, MPEG-2, MPEG-4 Part 2, RealVideo, Sorenson, Theora, WMV4. Audio formats : AAC, AC3, ALAC, AMR, DTS, FLAC, Intel Music Coder, Monkey’s Audio, MP3, Musepack, RealAudio, Shorten, Speex, Vorbis, WMA5. Subtitle formats : AQTitle, ASS/SSA, CC, JACOsub, MicroDVD, MPsub, OGM, PJS, RT, Sami, SRT, SubViewer, VOBsub, VPlayer6. Image formats: BMP, JPEG, MNG, PCX, PTX, TGA, TIFF, SGI, Sun Raster7. Protocols : RTP, RTSP, HTTP, FTP, MMS, Netstream (mpst://), SMB –wikipedia.orgHow to install mplayer in linux?In Ubuntu Linux:sudo apt-get...

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IPTables In Linux Explained

Posted by | Dec 12, 2009 | |

IPtables (Netfilter) :IPtables is the default firewall for Linux. Its a vast subject which can not be covered in one post. I will try to give as much info as possible at the same time not to make it complex. Lets start with basics. What is a firewall?Ans : A firewall is a part of a computer system or network that is designed to block unauthorized access while permitting authorized communications –Wikipedia.orgA IPtables firewall contains tables which in tern contains rules to block or unblock a perticular communication.A table can be a1.Filter table — Used to filter packets.2.NAT(Network Adress Translator) table — Used for NATing of source and destination ip address(Used for sharing internet)3.Mangale table — Its a combination of Filter and NAT tables4.RAW table — Used to for marking packets not to track. 1.Filter table : This is the default table which contaions three chains.a.INPUT Chain : To apply a rule on packets which are coming into the system.b.FORWARD Chain : For packets being routed through the systemc.OUTPUT Chain : For packets locally generated which are going out from the system.2.NAT table : This table is having three chains.a.PREROUTING Chain : For altering the packets as soon as they come in to the systemb.OUTPUT Chain : For packets locally generated which are going out from the system.c.POSTROUTING Chain : For altering the packets which are about to go...

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Some interview topics

Posted by | Nov 29, 2009 | |

If you are preparing for interviews for linux admin jobs you should be familiar with below concepts.. 1) Port number of different servers {cat /etc/services} 2) Linux Installation(through FTP,HTTP,NFS) 3) Boot process 4) Diff b/w ext3 and ext2 5) RAID LEVELS and Selection of raid 6) backup methods 7) Package management such as Yum server 8) Kernel Tuning 9) IPTABLES 10) TCP WRAPPERS 11) DIFFERENT RUN LEVELS 12) USER AND GROUP MANAGEMENT 13) QUOTA SETTING(user and group) 14) DIFF B/W CRON AND AT 15) BASIC SHELL SCRIPTING 16) Troubleshooting different issues. 17) Tell me why we should hire you? 18) DAILY ACTIVITES IN YOUR CURRENT COMPANY 19) RECENTLY SOLVED CRITICAL ISSUE 20) LVM (Very Imp) 21) Vertias Volume manager 22) cluster basic like HAD , GAB , LLT , HEARTBEAT , CONFIG FILES , RESOURCE , SERVICE GROUPS etc. 23 ) kernel panic troubleshooting 24) Process management 25)Configuration part of NFS , NIS , Samba , DHCP , DNS,Apache, Sendmail etc.. 26)Remote administration experience. And many more depending on your job profile. You should know each topics what you mentioned in your resume . If you are not sure about anything , don’t mention in your resume and your resume should reflect your skills. Please visit https://www.linuxnix.com for more linux admin...

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My name is Surendra Kumar Anne. I hail from Vijayawada which is cultural capital of south Indian state of Andhra Pradesh. I am a Linux evangelist who believes in Hard work, A down to earth person, Likes to share knowledge with others, Loves dogs, Likes photography. At present I work at Bank of America as Sr. Analyst Systems and Administration. You can contact me at surendra (@) linuxnix dot com.