Find out the number of CPU cores on Linux
How to find out the number of CPU cores on a Linux host.
Use the command nproc
.
$ nproc
nproc – print the number of processing units available: man page of nproc.
How to find out the number of CPU cores on a Linux host.
Use the command nproc
.
$ nproc
nproc – print the number of processing units available: man page of nproc.
ffmpeg is a powerful tool and it can do the work of capturing Linux desktop video very well. ffmpeg is a very fast video and audio converter that can also grab from a live audio/video source. ffmpeg can grab X11 input and create a video file such as mp4 at specific fps with the specific…
Many Linux distros, such as RHEL/CentOS 7, Fedora, Ubuntu 16, are now using systemd instead of init as the init system. It is common for Linux users to set Linux to boot to “GUI” or “Text” mode. The old way of changing ‘/etc/inittab’ for choosing Linux runlevels is not working for sytemd. This post will…
I usually use iPhone in the English language. However, I find the iPhone calendar app includes a US holiday calendar subscribed while I am not in US and displaying US holidays in the iPhone calendar is no use and kind of annoying to me. After some investigation, I find the way to set the iPhone…
I tried to build a project while it reports: # ./autogen.sh Can’t exec “aclocal”: No such file or directory at /usr/share/autoconf/Autom4te/FileUtils.pm line 326. autoreconf: failed to run aclocal: No such file or directory How should I handle this? How to install aclocal? yum install aclocal shows: No package aclocal available. Error: Unable to find a…
Vim itself is very fast. But it turns to be slow after enabling some plugins. How to find which plugin leads the slowness of Vim? You may use the profiling mechanisms in Vim. Please check a tutorial on profiling Vim. For profiling Vim startup: vim –startuptime profile.log For profiling certain actions in Vim: :profile start…
I have 2 branches: dev and master. I have commits in dev like this: c0–>c1–>c2–>c3–>c4 Commits in master like this: c0–>c5–>c6 c2 and c3 fix a bug. Now, I want to merge commit c2 and c3 that fix the bug to the master branch, but I do not want to merge all the commits (e.g….