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Owner: senthilkumarc

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Language: English

Tags: system admin, linux, linux server, server, linux tips

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Latest Blog Posts for knowledge4sysadmin

  • Squid Config – Transparent
    on Jun 8, 2016 in Uncategorized
    Squid Internet Filtering Using 2 Ethernet Card’s There are 2 Ethernet card’s 1. eth0 with 192.168.1.0/24 connected to ISP router… Read more Squid Config – Transparent...
  • Setup Caching-only Name Server Centos 6
    on Dec 10, 2015 in Uncategorized
    Setting Up a Cache-Only Name Server Running a cache-only name server can be useful when optimizing DNS requests in your network.… Read more Setup Caching-only Name Server Centos 6...
  • Retreive Apache Log File
    on Sep 16, 2015 in Uncategorized Apache
    Question The server is running Apache and by mistake one of the log files gets deleted via rm domain.com-access_log Without installing any 3rd party recovery tools how can you recover this file that your boss needs. Also assume that as soon as the lo...
  • How to use the bash command line history
    on Oct 7, 2014 in Linux
    The bash history mechanism is persistent and remains with us even after reboots, so we want to ensure that it contains information that is relevant to our use of the command line. Let’s take a look at how it all works, so that you can better manage...
  • How to use the bash command line history
    on Oct 7, 2014 in Linux
    The bash history mechanism is persistent and remains with us even after reboots, so we want to ensure that it contains information that is relevant to our use of the command line. Let’s take a look at how it all works, so that you can better manage...
  • Linux Resource utilization & detect system bottlenecks
    on Oct 6, 2014 in Linux
    Q. How can I find out Linux Resource utilization using vmstat command? How do I get information about high disk I/O and memory usage? A. vmstat command reports information about processes, memory, paging, block IO, traps, and cpu activity. However,...
  • RedHat Releases RHEL 7
    on Oct 6, 2014 in Linux
    When the first Linux distributions based on the 3.0 kernel were released almost a year ago, I was struck by how far Linux had advanced. The latest turn of the crank for Linux, in the form of Red Hat Enterprise Linux 7 (RHEL 7), reinforces this opinio...
  • RedHat Releases RHEL 7
    on Oct 6, 2014 in Linux
    When the first Linux distributions based on the 3.0 kernel were released almost a year ago, I was struck by how far Linux had advanced. The latest turn of the crank for Linux, in the form of Red Hat Enterprise Linux 7 (RHEL 7), reinforces this opinio...
  • Migrating from Microsoft Exchange to qmail
    on Jan 23, 2014 in Linux
    Migrating from Microsoft Exchange to qmail The Phased Approach The only thing we knew for certain when we started was that the administration of Microsoft server products is much different from that of Linux and Open Source products. Since Exchange w...
  • Migrating from Microsoft Exchange to qmail
    on Jan 23, 2014 in Linux
    Migrating from Microsoft Exchange to qmail The Phased Approach The only thing we knew for certain when we started was that the administration of Microsoft server products is much different from that of Linux and Open Source products. Since Exchange w...
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