When publishing an ASP.NET Core application to a Linux server running nginx, is it necessary to install the .NET Core runtime on the server? Answer One of the options when publishing a .NET Core application is self contained deployments which include a version of the .NET Core runtime. They are described (in …
Tag: linux
(deleted) file creating issue on Linux
My process reads a files and deletes it. This activity happens more than 2000 times. When I check the file in /proc/PID/fd, I see the file there and I see at the end of each line as (deleted). But I see 1024 records, with 1020 being the (deleted) entries. Later the new file operation from this PID fails. To o…
How to find out which kernel spinlock eat up most of CPU?
I’m doing performance tuning of a crypto software, which is run on Linux and utilizes hardware crypto acceleration device. When the load is given over some threshold, kernel _spn_lock begin to eat most of the CPU’s time. The following perf top screenshot shows ~30% of CPU is taken by _spin_lock, b…
Multi Hop, Self Closing, Background SSH Tunnel
I’m trying to create a multi hop ssh tunnel, that is in the background, and self closing. What I have is… This successfully creates a multi hop ssh tunnel that closes the port on host1 after I close the tunnel. However, if I try to fork it to the background, like this… It runs in the backgro…
COTson linux installation
I’m new in linux, and i know that this should be a stupid question, but i didn’t find anything over the internet, so i decide to ask it here: During the configuration of the COTson program using this line of code it gives me an error: CODE: ./configure –simnow_dir ../simnow-linux64-4.6.2pub …
Find subdirectory and remove files not containing a specific string LINUX
Given a main path ./class and within class are subdirectories student1,student2,student3…student100. within these subdirectories are other sub-directories history,geography,Math. Each of these subdirectories have hundreds of files in them. I want to KEEP all files that have a string pass in Math ONLY wi…
Unity 2-D installation for Linux-RedHat Fedora
I have been trying recently to install Unity 2D on my Fedora OS. However, I could not find a unity rpm package, I found many for Debian. Unity website mainly supports Mac OS and Windows. I have run through many solutions, but none of them worked, either because they are made for an old version of Fedora or th…
CentOS inserting new line of text after another using sed not working
I’m trying to insert a line of text which is; On the next line after the words; in my /etc/nginx/nginx.conf using the following command But each time i run it, it just returns Im not very good with this sort of stuff so i was hoping someone could help me out. Cheers, Answer Remove the second single-quot…
conditional check within makefile
I am updating makefile of the project where I need to perform different steps based on the customer or manufacturing build, I have written simple makefile as follows and with that I am seeing unexpected output, could someone help figure out issue with makefile. I am getting following output of the makefile Th…
Access the word in the file with grep
I have a conf file and I use grep to access the data in this file but not a very useful method for me. How can I just get the main word by search-term? I using: Print: I want: (without “export: “) How can I do that? Answer If you’re using GNU grep you can use PCRE and a lookbehind: