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27 FAQ tagged "CentOS"

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• Force yum update Command To Exclude Certain Packages :

  How can I exclude selected packages when I rum yum update command under CentOS Linux server?

• APF Linux Firewall Open Port 22 From Specific / Selected IP Address Only :

  Q. I’ve CentOS Linux server configured with APF firewall. How do I open port 22 from specific IP address only? I’ve fix static ADSL IP address assgined and I’d like to open port 22 from my IP 202.5.1.3 only using APF firewall script. How do I configure firewall?

• Linux tar: /dev/st0: Cannot write: Invalid argument error and solution :

  Q. When I run tar command it fails with an error that read as follows:
  tar: /dev/st0: Cannot write: Invalid argument
  How do I fix this error under CentOS / Debian / Fedora / RHEL Linux HP server systems?

• How do I know When I Need To Update My Linux System Software? :

  How do I know when I need to update my Linux system? How do I know new patches are available for CentOS Linux (Red Hat) / Debian Linux server system?

• What is My root Password for MySQL Database Server? :

  Q. What is my root password for MySQL under CentOS Linux 5.0 server?

• -bash: enable: PrinterName: not a shell builtin Error and Solution :

  Q. When I type the following command under CentOS 4.x / Fedora Linux:
  enable hplj2
  I see the error message:
  -bash: enable: hplj2: not a shell builtin
  How do I fix this error?

• kpartx: Linux Create Device Maps From Partition Tables ( mpath devices for partitions ) :

  How can I create mpath devices for partitions under CentOS Linux version 5.x server?

• Linux Virtual Network Interfaces Go Down When I bring Down eth0:0 :

  My RHEL / CentOS Linux 4.x virtual network interfaces go down when I bring down eth0:0. How do I fix this issue?

• Redhat / CentOS / Fedora Linux Install XCache for PHP 5 :

  Q. How do I install Xcache opcode cacher for PHP 5 under RHEL / CentOS version 5.0 server?
  A. XCache is a open-source opcode cacher, which means that it accelerates the performance of PHP on servers. It optimizes performance by removing the compilation time of PHP scripts by caching the compiled state of PHP scripts [...]

• Lighttpd as you compiled without pcre support error and solution :

  Q. I’m using lighttpd under CentOS 5 and getting the following error:
  …can’t handle ‘$HTTP[url] =~ …’ as you compiled without pcre support.
  My question is What is pcre support, and how do I solve this problem?
  A. Pcre is nothing but Perl-compatible regular expression library. PCRE has its own native API, but a set of “wrapper” functions [...]

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