The tail command in unix or linux system prints the last N lines from the file on the terminal. Tail command is especially used with log files to read the last few lines to know about the error messages. The syntax of tail command is: # tail [options] [files] Type tail [-n count] file … […]
Archives for August 2022
ubuntu-drivers: command not found
Device drivers literally drive everything you’re interested in–disks, monitors, keyboards, modems–everything outside the computer chip and memory. With the ubuntu-drivers command you can install the recommended driver for the device. First, detect the model of your device and the recommended driver. To do so execute the following command. Please note that your output and recommended […]
virt-install: Command Not Found
The virt-install tool is supplied to allow new virtual machines to be created by providing a list of command-line options. The virt-install utility accepts a wide range of command-line arguments that are used to provide configuration information related to the virtual machine being created. Some of these command-line options are mandatory (specifically name, memory and […]
vmstat output explained
The vmstat command is useful for reporting statistics about virtual memory. The vmstat command is located in /usr/bin, is part of the bos.acct fileset and is installable from the AIX base installation media. The vmstat command summarizes the total active virtual memory used by all of the processes in the system, as well as the […]
Most commonly performed operations in Yocto
The Yocto Project is an embedded Linux distribution builder that makes use of several other open source projects. A Linux distribution is a collection of software packages and policies, and there are hundreds of Linux distributions available. Most of these are not designed for embedded systems and they lack the flexibility needed to accomplish target […]
Memory utilization of processes in AIX
Monitoring any performance characteristics is a very important part of achieving the best results possible. There are many ways to investigate different parameters and settings, but combining several tools and commands can give you the best overall picture of performance. This post describes the following tools: The ps command The sar command The svmon command […]
Procedure to mount and unmount NFS filesystems on AIX
Clients access files on the server by first mounting a server’s exported directories. When a client mounts a directory, it does not make a copy of that directory. Rather, the mounting process uses a series of remote procedure calls to enable a client to access the directories on the server transparently. There are three types […]
Using savevg on AIX to save time creating filesystems, LV’s and volume groups
On AIX, the savevg command can be used to back up non-root volume groups and their contents. The volume group structure can be recreated from the savevg archive. Other data backups might be need to be applied to bring the data up to date. Should an entire disk group be lost, this would need to […]
What is VIOS?
The VIOS is a specialized operating system that runs under a special type of logical partition (LPAR). It provides robust virtual storage and virtual network solution; when two or more Virtual I/O Servers are placed on the system, it also provides high availability capabilities between them. A virtual i/o server is an appliance that provides […]
Run VIO commands from the HMC using “viosvrcmd” without VIOs Passwords
IBM Systems Director can not only gather standard inventory information from the operating system running inside the VIOS but also virtualized resources. This information comes from the communication with the Hardware Management Console and the viosvrcmd command. The virtual resources and the client LPARs are stored in the Systems Director database. There is nothing to […]