Troubleshooting NTP in Linux (RHEL5/6)
When you want to troubleshoot the NTP service, there are a few commands that can help you out. First, if you want to update the time manually, you can use the ntpdate command.
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100+ Perl One Liners
Double-space a file perl -pe ‘$\ = “\n”‘ file Double-space a file, excluding the blank lines perl -pe ‘$_ .= “\n” unless /^$/’ Add a blank line before every line perl -pe ‘s/^/\n/’ Remove all blank lines perl -ne ‘print unless /^$/’
Solaris Troubleshooting : Sendmail Troubleshooting – 2
This post is continuation to the Sendmail Troubleshooting – 1 // ]]> Step 5. Verify the sendmail configuration. In Solaris 9 and above, sendmail uses a 2 queue paradigm structure (/var/spool/mqueue and /var/spool/clientmqueue). This is to make sendmail more secure by not giving out setuid for...
Solaris Hostname / IP rename Procedure
In enterprise network environment, the life time of any server will be decided by the lifetime of the application that is running on top of Operating System. In case if the application was retired / decommissioned then that server can be utilized for the different applications....
Working with dracut in RHEL7
Introduction dracut – low-level tool for generating an initramfs image Create an initramfs for the kernel with the version . If is omitted, then the version of the actual running kernel is used. If is omitted or empty, then the default location /boot/initramfs-.img is used.
7 Coolest Automation things you can do with Python [ Video Post ]
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Solaris 10 – How to access SVM root disk from fail safe / Cdrom boot
This procedure explains the steps required to access a root filesystem under SVM, during the situation when the solaris cannot boot in normal way and it require to boot from failsafe or cdrom. In this procedure the device /dev/dsk/c0t0d0s0 is used as our root filesystem slice.....
Solaris Troubleshooting : Ethernet Hardware Error Checking
When troubleshooting for Ethernet hardware issues, it might be useful to check the interface’s error statistics, but what do they mean?
Solaris Troubleshooting NIS: add a user for NIS maps when passwd file is not in the /etc directory
Below procedure can be used to add a new NIS user when the passwd file is not in the /etc directory Steps to Follow The example below demonstrates how to add a user for NIS maps when the passwd file is not in the /etc directory....
RHEL6 Installation and Security Bench Marking Recommendations – Part6
System Access, Authentication and Authorization In this post we will discuss about the Configuration and Tuning of RHEL6 System Access, Authentication and Authorization.
