Reduce LVM based XFS filesystem in linux.
In linux, we can’t reduce the XFS filesystem in general. And to reduce any partition, we need to take backup of data at some other path and then re-create the...
Category: Linux/Unix
In this category, you can see all articles related to Unix or Linux operating System.
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How to disable/enable multi threading from OS in Linux ?
Today in this article, we will see how to disable or enable CPU multi threading from OS in Linux. 1. Check Current Multi-threading Status. [root@ngelinux ~]# cd /sys/devices/system/cpu/smt [root@ngelinux smt]#...
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How to increase DefaultTasksMax in RHEL/CentOS 8 onwards ?
Let us see how to increase the DefaultTasksMax in RHEL, or CentOS 8 Operating system onwards. The default maximum tasks in RHEL/CentOS8 is quite low when you run any database...
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How to enable NTP in timedatectl in rhel 7 onwards ?
Today we will see how to enable NTP in RHEL 7 onwards. Lets see it step by step. 1. Check current timezone and date [root@ngelinux samba]# date Thu Mar 7...
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How to download only RPM with dependencies using yum ?
In this article, we will see how to download rpm packages with dependencies using yum. The trick is very useful especially for servers where the repo is not reachable. Lets...
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Easy way: To Find difference between two text files in Linux.
To find the differences between two files in Linux using grep, we can use the following approaches. 1. Lines in File1 but not in File2 # grep -Fxv -f file2.txt...
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How to change core dump path to current dir in RHEL 8+ onwards and test it ?
From RHEL 8 onwards, the default core file path is changed to /var/lib/systemd/coredump unlike till RHEL 7 where its saved in current path by default. We can use below steps...
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How to restrict direct root user password login on Linux ?
In this post, we will see how to restrict direct root login via password, and only allow login via keys. To achieve this, we need to change below setting in...
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How to set timezone on RHEL Linux Host from RHEL 7 onwards ?
Lets see how to set timezone on Redhat Linux from RHEL 7 onwards. Earlier we used to link the timezone files. However now we can do it via a command...