25 articles tagged "rhel"

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• Linux: Display a login banner for Gnome (GDM) Desktop

  You can easily use /etc/issue file to display a pre-login message / login warning banner for text based session. You can also force OpenSSH (SSHD) to display a login message or banner. But how do you force GDM to display a login banner for all local and remote users?
  GDM customization
  GDM is a replacement [...]

• How to: Linux reset the permissions of the installed rpm packages with –setperms option

  Sometime by mistakes all file permissions get changed and you need to restore file permission. For example a shell script or some sort of corruption could change the permissions for packages (installed files), it may be necessary to reset them.
  For example a long time ago my shell script run chmod and chown commands [...]

• Linux rpm command no such file or directory error and solution

  New Linux user often get this error. Let us say you haved downloaded the RPM file from net and saved to /tmp, you may get error - no no such file or directory - when the file is really downloaded and ls command can show the same.
  Answer is pretty simple rpm command needs the full [...]

• Howto Setup yum repositories to update or install package from ISO CDROM Image

  yum (Yellow dog Updater Modified) is a package manager for RPM compatible Linux systems such as CentOS, Fedora core and latest Redhat Enterprise Linux.
  So how do you use yum to update / install packages from an ISO of CentOS / FC / RHEL CD?
  Creation of yum repositories is handled by a separate tool called createrepo, [...]

• Linux audit files to see who made changes to a file

  This is one of the key questions many new sys admin ask:
  How do I audit file events such as read / write etc? How can I use audit to see who changed a file in Linux?
  The answer is to use 2.6 kernel’s audit system. Modern Linux kernel (2.6.x) comes with auditd daemon. It’s responsible for [...]

• Fix a dual boot Windows Vista and Linux problem

  How do you fix a dual boot system if you had to reinstall Windows Vista and you can no longer boot to Fedora Core 6 (FC6) or Fedora Linux ? Nobody wants to reinstall FC 6 or Fedora Linux again!
  Almost all versions of Microsoft Windows (including XP, Vista and old versions) overwrite GRUB bootloader in [...]

• How to keep a detailed audit trail of what’s being done on your Linux systems

  Intrusions can take place from both authorized (insiders) and unauthorized (outsiders) users. My personal experience shows that unhappy user can damage the system, especially when they have a shell access. Some users are little smart and removes history file (such as ~/.bash_history) but you can monitor all user executed commands.
  It is recommended that you [...]

• Red Hat enterprise Linux Install lighttpd and Fastcgi PHP

  I have received many queries regarding how to configure and install Lighttpd web server under Red Hat Enterprise Linux version 4.0. Mark asks:
  RHEL 64 bit v4.0 does not support PHP as FastCGI. Lighttpd is not available from RHN (up2date command). How do I configure and install lighttpd with FastCGI?
  Ok let me answer these questions [...]

• Linux Get list of installed software for reinstallation / restore software

  Hardware and Software failures are part of Life. That is why you need to have a backup. I have already written about backing files and MySQL databases. You need not to backup all installed binaries (mostly software) with following tips. It will not just save your time but both Debian and RHEL distro can [...]

• Comparison: Linux vs FreeBSD (Bsd) oses

  If you would like to compare FreeBSD and Linux, then keep in mind following points:
  * SMP support
  * Portability
  * Reliability/robust
  * Performance
  * Security
  * Filesystem

  * Support (community and vendor)
  * Clean code and well documented API
  * Amount of software/applications
  * 3rd party apps support

  Feature
  FreeBSD
  Linux

  SMP support
  Good (v5.x/6.x+)
  Very Good (2.6+)

  Reliability/robust
  Very Good
  Good

  Performance
  Very Good
  Good

  Security (out of box)
  Very good
  Good

  Filesystem
  Good
  Good

  Oracle/ERP apps
  Not supported
  Very good

  Package management
  Excellent [...]

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