What is BTC SegWit and Its Impact on Transaction Fees? Segregated Witness (SegWit) is a major protocol upgrade for Bitcoin that was activated in 2017. It fundamentally changed how transaction data is structured to improve scalability and enable future innovations like the Lightning Network. The Core Innovation: Separating the Data In the original Bitcoin protocol,…
CalDAV and CardDAV are open, internet-based standards for syncing your calendar and contacts across different devices and services. What They Do CalDAV (Calendar): Allows you to sync your appointments, events, and reminders. If you add an event on your phone, it instantly appears on your laptop. CardDAV (Contacts): Allows you to sync your address book….
This is the release notes for linux release v2.0 (source code: linux-2.0.tar.gz) with format adjusted by removing/replacing tabs/spaces/new lines/formatting marks. This notes document can give us an understanding of the early development of the Linux kernel. The original ASCII formatted version is at the end of this post. Intro This document contains a list of…
In Ubuntu 24.04 LTS, the default Go lang version is 1.10. For compatibility reason, the Ubuntu LTS will usually keep the major release version numbers for packages. However, many applications, such as Hyperledger Fabric 2.0, require a newer version of Go. In this post, let’s take a look at how to install a system level…
How to get a path’s mtime in C++ on Linux? The path can be a file or a dir. You may call the standard library function lstat() for the file or dir under the path. int lstat(const char *pathname, struct stat *statbuf); From the returned stat struct, there is a field st_mtim which is the…
The HDFS has a configuration in hdfs-site.xml to set the global replication number of blocks with the “dfs.replication” property. However, there are some “hot” files that are access by many nodes. How to increase the number of blocks for these certain files in HDFS? You can the replication number of certain file to 10: hdfs…
How to convert a MS Word document file such as .docx and .doc to pdf on Linux using command line tools? Use LibreOffice: libreoffice –headless –convert-to pdf –outdir /path/to/out/dir/ /path/to/doc/docx/file While this LibreOffice answer works, the –headless option still needs as display, even though it does not use it. In otherwords, this option won’t work…
I find that gnuplot and ps2epsi do not work on Fedora 41. The same packages/scripts work for me on old installations on Fedora 41. I find this line is printed out multiple times: Fontconfig warning: “/etc/fonts/conf.d/50-user.conf”, line 14: reading configurations from ~/.fonts.conf is deprecated. I even tried an older version of gnuplot (4.2 patchlevel 6)….
Before statically linking you C and C++ programs, you should be aware of the drawbacks of the static linking especially with glibc. There are some good discussions already: with glibc you’re linking static programs which are not really static and some others here and here. That said, you can choose to statically link C and…
This is the latest stable and recommended stable Xen Dom0 solution on Fedora 41. No serious bug found till now and we will fix the bugs by ourselves if some appears. It also works on Fedora 41 as well. It should not be hard to use this solution on other versions of Fedora or other…