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RHEL 7: How to use journalctl to examine system logs and its various options ?

Today we will look how to use journalctl command to examine system logs in RHEL 7 or 8. And various options which are used frequently. 1. Journalctl command displays all...

By Saket Jain Published June 11, 2021 Linux/Unix
Different ways to get an owner of a file in Linux ?

In this post, we will look different ways to get owner of a file in linux. We generally use ls command, however there are different ways available to achieve this....

By Saket Jain Published April 24, 2019 Linux/Unix

Saket Jain on How to configure and install Nagios Server on Linux ?: “Please check your system resolv.conf/DNS settings, it looks its not able to resolve the hostname. The URL is correct.” Jul 18, 13:37
deepanshu on How to configure and install Nagios Server on Linux ?: “[root@localhost nagios]# wget https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.5.tar.gz –2023-07-02 19:15:08– https://assets.nagios.com/downloads/nagioscore/releases/nagios-4.4.5.tar.gz Resolving assets.nagios.com (assets.nagios.com)… failed: Name or service not known. wget: unable to resolve host…” Jul 3, 08:13
aasdasdKEKEK on Solved: subscription-manager – Not supported by a valid subscription.: “You Genius. How do we “verify if we have enough subscription available on redhat support to add this new server.”” May 27, 18:26
Ryan on How to schedule a cron to execute on first monday of every month ?: “You can do 0 3 */99,1-7 * mon /root/test.sh which does: if minute==0 AND hour==3 AND (every 99th day of month OR day between…” May 9, 06:07
KristoR on Counts characters inside a file in Linux bash.: “Thanks for the article. One important correction: the syntax for character count is wc -m. -c is for bytes.” Jan 6, 08:12

Saket Jain is a GNU/Linux sysadmin from Alwar, Rajasthan, India. He works for a worldwide leading consumer product company and takes great pleasure on working with Linux Internals alongwith using FOSS tools to increase productivity in all areas of his daily work.

Achievements
1. He derived NGEL from Centos.
2. Created delete, undelete and deleteperm command.
3. Has more than 8 Years of experience in Linux/Unix System administration and consultation.
4. Certified Yoga Trainer under Govt. of India.
5. Limca Book of Record Certificate Holder in 2012
6. Author of the book "Unix Administration Quick Guide"
7. ITIL 2011 Foundation Certified, and RHCE Certified under RHEL5,6, and 7.
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RHEL 7: How to use journalctl to examine system logs and its various options ?

Different ways to get an owner of a file in Linux ?

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