Blog for Unix Admin / Solaris Admin / Solaris Performance Monitoring
by Ramdev · Published June 5, 2021
in Solaris 10, the method that is used to calculate usr, sys and idle time has changed. As well, the waitio time has been hard-coded to 0 in all instances (because it was never a very meaningful statistic).
Blog for Unix Admin / Solaris Admin / Solaris NFS / Solaris Troubleshooting
by Ramdev · Published June 4, 2021
This article will help you to understand some of the basic troubleshooting instructions for NFS problems …
Let’s start with a typical installation of Red Hat Enterprise Linux on a Virtual Box Step 1. Create a new virtual machine in VirtualBox, with 384MB of RAM, and name it RHEL01. Step 2. Make sure that the installation CD is in the drive (or attached...
‘tac’ copies each FILE (‘-‘ means standard input), or standard input if none are given, to standard output, reversing the records (lines by default) in each separately. Synopsis: tac [OPTION]… [FILE]… “Records” are separated by instances of a string (newline by default). By default,...
Verification of Hardware RAID status can be performed either from the BIOS level ( during booting) or from the OS level while the Server is running. Below procedures explains you both ways of verification
Using Regular Expressions with Grep A “regular expression” is a pattern that describes a set of strings. Regular expressions are constructed analogously to arithmetic expressions, by using various operators to combine smaller expressions. `grep’ understands three different versions of regular expression syntax: “basic,” (BRE) “extended” (ERE)...
The maximum limit of open files per process can be limited by setting a hard limit and/or a soft limit. The hard limit can be set by the system administrator and be decreased by any user, whereas the soft limit can be set by any user,...
The sshd daemon that comes with the Solaris[TM] 9 & 10 Operating System uses TCP (Transmission Control Protocol) Wrappers (also called “libwrap”) to control access to hosts. (Unlike other systems, Solaris 9 & 10 does not use the OpenSSH keywords “AllowHosts” and “DenyHosts” to permit or...
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Solaris Admin / Solaris11 Admin / solaris11-Howto / Unix Intermediate
by Ramdev · Published May 27, 2021
Using the ps Command The ps command enables you to check the status of active processes on a system, as well as display technical information about the processes. This data is useful for administrative tasks, such as determining how to set process priorities. Depending on which...
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