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.
Is large-but-correctly-aligned-and-optimized code faster than less-bytes-per-instruction/opcode-packed code? Alex Ionescu mentioned in ros-dev mailing list: I’m not sure why you would want kernel code to be “smaller” instead of “faster” though — on modern processors for cases like interrupts and such, large-but-correctly-aligned-and-optimized code is faster than less-bytes-per-instruction/opcode-packed code. ie: mov eax, [foo] add eax, 1 mov…
Hello! Im trying to create a screen folder for the user apache, Not root. But it seems to fail, I have no idea on how to fix this issue. I only get the error: Cannot make directory ‘/var/run/screen/S-apache’: Permission denied Im using Cent OS 7 There may be various possible reasons. 2 common reasons: screen…
How to Import a CMake project into Eclipse CDT? For example, the current CMake project source directory is ./src. mkdir ./cdt && cd ./cdt && cmake -G “Eclipse CDT4 – Unix Makefiles” ../src cmake will generate a Eclipse project in ./cdt and you can open it in Eclipse. Read more: How to import a googlecode…
I have many files under a directory. How to find those files under the directory that are larger than certain size, say 500MB? Find the files that are larger than 500MB in the current directory (./): find ./ -size +500M Prints our more information about these files: find ./ -size +500M -exec ls -lh {}…
Why is this site called Fclose? Actually, no special meaning at all. “fclose” is just a familiar function for ones that are familiar with computers. Read more: Why setting up Fclose Questions? What does the /b/ mean in the URL of Fclose.com – SysTutorials QA Why does ; after & lead to unexpected token error…
How to detect whether a .jpg image is almost blank/black on Linux? Here is a bash function that I used to detect whether an image is black on Linux: function isBlank () { mean=`convert $1 -format “%[mean]” info:` echo “$mean” } It uses ImageMagic to generate formatted image characteristics (the mean). If the mean is…