DevOps: A very popular term now a days in IT industry which includes new revolutionary approach and tools like Jenkins, Travis, Chef, Ansible, Cfengine, Mesos, AWS, OpenStack, Dockers and many many more. Puppet is also one of the most popular tool used in the DevOps approach...
head command:: Output the first part of files. tail command:: Output the last part of files. split command:: Split a file into pieces. csplit command:: Split a file into context-determined pieces.
So far in our sample scripts, we terminated things pretty abruptly. When we were finished with our last command, we just ended the script. There’s a more elegant way of completing things available to us. Every command that runs in the shell uses an exit status...
Blog for Unix Admin / Solaris Admin / Solaris Packages & Patching
by Ramdev · Published April 21, 2021
Suppose you know the name of a file you need, but don’t know what package it belongs to. Knowing the package name can help you when installing missing software. If you have a system on which the needed file exists, you can use one of below two...
Grub Security Authentication and authorization in GRUB By default, the boot loader interface is accessible to anyone with physical access to the console: anyone can select and edit any menu entry, and anyone can get direct access to a GRUB shell prompt. For most systems, this...
The following errors could be seen when a filesystem is full:
‘head’ prints the first part (10 lines by default) of each FILE; it reads from standard input if no files are given or when given a FILE of ‘-‘. Synopsis: head [OPTION]… [FILE]… If more than one FILE is specified, ‘head’ prints a one-line header...
1. Grub Configuration syntax and semantics GRUB uses a special syntax for specifying disk drives which can be accessed by BIOS. Because of BIOS limitations, GRUB cannot distinguish between IDE, ESDI, SCSI, or others. You must know yourself which BIOS device is equivalent to which OS...
You can display the current kernel parameters values by using the ‘sysdef -i’ command.
Beginners Lessons / Linux Beginners Guides / Solaris Beginners Guides / Unix Beginners
by Ramdev · Published April 15, 2021
1. What is RAID? RAID is an acronym for Redundant Array of Independent Disks. A RAID system consists of an enclosure containing a number of disk volumes, connected to each other and to one or more computers by a fast interconnect. Six levels of RAID are...
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