How to install noip2 on Linux to update my no-ip domain? Check the post at: https://www.systutorials.com/4677/how-to-install-noip2-on-linux/ To make noip2 service automatically update with your latest IP, add a crontab entry for root: 0 */5 * * * /sbin/service noip restart The noip2 service will be restarted every 5 minutes. When the service is restarted, it…
How to input smiley faces in iPhone? I use Emoji Free app to enable the Emoji input methods. It is quite good and enables inputing of many nice smiley faces and icons. The app from App Store: Emoji Free app.
How to run Firefox on Remote Host over SSH ? After $ ssh -X remotehost Run this script on remote host: #!/bin/bash export $(dbus-launch) export NSS_USE_SHARED_DB=ENABLED firefox -no-remote & This script credits to Waxborg: http://waxborg.servepics.com/opensuse/remote-administration/running-firefox-remotely-over-ssh.
How to pass kernel parameters to Xen DomUs ? Kernel paremeter may be needed to be passed to a Xen DomU. For example, when the DomU fails to boot and we want to check it in ‘single’ mode. We can simply start the DomU with the “extra=” syntax. For example, to add ‘single’ to the…
How to convert a ps file to a pdf file that is available for publish (embedded fonts, etc)? Convert the file.ps ps file to file.pdf: $ ps2pdf -dPDFSETTINGS=/printer file.ps file.pdf</pre> Embedding Fonts in PDFs with pdflatex by Jeffrey P. Bigham: http://www.manticmoo.com/articles/jeff/programming/latex/embedding-fonts-with-pdflatex.php
How to prevent Chrome from closing itself after I close the last tab? This is a feature I want to have. This is a feature I want to have. Last Tab Standing plugin plays the trick: https://chrome.google.com/webstore/detail/last-tab-standing/dlopnnfglheodcopccdllffcijjeenkj If the last tab is closed, this extension stops Chrome from closing and instead opens the New…
How to set the global user name and user email for git? We may be asked to set our global user name and user email if it is the first time that we use git on a machine: Your name and email address were configured automatically based on your username and hostname. Please check that…
How to find Linux absolute path for a relative path in Linux? We may need the absolute path on Linux when we only know the relative path. The readlink command does the trick. To find out the absolute path for a relative path, e.g. ./: $ readlink -f ./
How to install Dropbox on Linux ? Just follow Dropbox’s instruction here: https://www.dropbox.com/install?os=lnx A quick command for 64-bit Linux: $ cd ~ && wget -O – “https://www.dropbox.com/download?plat=lnx.x86_64” | tar xzf – Use the dropx CLI: http://www.dropboxwiki.com/Using_Dropbox_CLI Download dropbox.py: $ wget -O ~/bin/dropbox.py “https://www.dropbox.com/download?dl=packages/dropbox.py” Set the permissions: $ chmod +x ~/bin/dropbox.py Start Dropbox: $ dropbox.py start Status:…
How to efficiently archive a very large sparse file, say 1TB? The sparse file may contains a small amount of data, say 32MB. SEEK_HOLE and SEEK_DATA The SEEK_HOLE/SEEK_DATA functionalities play the trick and makes `tar` and `cp` handle the large sparse file very efficiently. `lseek` with `SEEK_HOLE` returns the offset of the start of the…
Any tutorials or tips on how to manage LVM? LVM provides a flexible and easy way to management storage disks on Linux. It also provides a set of tools for management. Here are some tutorials and references for managing LVM: LVM man pages: https://www.systutorials.com/docs/linux/man/8-lvm/#lbAL Manage Disk Volume in Linux: http://www.hongkedavid.com/blog/disk_volume.html LVM with Xen: https://www.systutorials.com/b/linux/tag/lvm/ Remove missing phyiscal volumes…
How to easily and quickly test the connection between two nodes on Linux? This should be specific to protocol and port. We can use nc (netcat) to test the connection between two servers. For example, to test whether TCP port 1048 can be used on the server (IP 10.0.3.48 as an example) side: On the server: $…
In Linux, mmap() is a system call that is used to map a portion of a file or device into the memory of a process. This can be useful for a variety of purposes, such as memory-mapped I/O, shared memory, and virtual memory management. However, when mapping a large range of memory that is larger…
How to find hard links to a file in Linux? To find out all hard links to file1: $ find /home -xdev -samefile file1 Read more: http://linuxcommando.blogspot.com/2008/09/how-to-find-and-delete-all-hard-links.html
Evolution is a great personal information management tool that provides Email, address book and calendar tools. Evolution provides many enterprise friendly feature such as native support to Microsoft Exchange connectivity for Emails, address books and calendars. Evolution uses various ways including plain files and dconf configuration systems. This post will give an introduction to the…
We ever discussed fixing ports used by NFSv3 so that it can be easily exported to external networks. For NFSv4.1 or higher, things are much easier. The ports for mountd, statd, and lockd are not required in a pure NFSv4 environment. We have less ports to control or allow for connections. Only port 111 and…
This blog will explain about how to add a custom content in a Receipt which will be generated from MPOS in Microsoft Dynamics. Microsoft provides us with certain fields which can be put into the receipt. There are certain fields which a client will ask to show in the receipt. If the desired field is…
Technology Hibernate Envers is the frameworks for auditing entities. As the name suggests Hibernate Envers is developed on top of Hibernate, it will on Hibernate and Hibernate implemented JPA. Hibernate Envers provides easy auditing, versioning solution for entity classes. Advantages of Hibernate Envers: Auditing of all mappings defined by JPA specification. Auditing Hibernate specific mappings…
Introduction In this tutorial, we will be learning as how to deploy .NET Core 2.0 MVC web application on Microsoft Public Cloud i.e. Microsoft Azure, using Microsoft Visual Studio 2017 v15.3 For novice Cloud developers, aspiring .NET / Cloud architects, and all other IT professionals associated with the .NET Core framework & Cloud computing, especially…
The encoding of x86 and x86-64 instructions is well documented in Intel or AMD’s manuals. However, they are not quite easy for beginners to start with to learn encoding of the x86-64 instructions. In this post, I will give a list of useful manuals for understanding and studying the x86-64 instruction encoding, a brief introduction…