I need to modify an ntp configuration file by adding some options to the line containing Ip addresses. I have been trying it for so long using sed command, but no able to modify the line unless i don’t know the IP addresses. Let say, i have few lines as, server 172.0.0.1 server 10.0.0.1 I need to add ib…
Copy several files to current directory using find on busybox
I have the following snippet that works well non normal terminals (for example, on cygwin): What it should do is find all the files that match the provided patterns and copy them to the current directory. However, when I run this terminal on Github Workflows it only copies the .apk files, like if it were igno…
What end of stream dup2 change?
What end of the stream does dub2 ( ) change is it the end the OS is connected to or the end connected to application . this code redirect output to file and not the screen which means that input side of stream is connected now to the file right . Answer Before the dup2(), the file descriptor table for
Use Route53 template in cloudformation with Cloudfront
Hi Team, I am going to create a route53 record with cloudfront please find the cloud-formation code and in which I am getting an error while create a stack. Basically I want to create a CNAME record by using cloudfront domain name. Please help me out in this. Answer You can use the below template I should rai…
Node JS process running under PM2 and file permissions
I have a small node.js (v13.5.0) server running under PM2 (v4.4.0) on a RHEL 7.6 box. As a part of it’s function it writes a small CSV file to the disc for every incoming request. This app is writing these files with the perms (rw-r—–). The user I am having PM2 executing my process as has um…
merge different files into 1 text file in R
I have two files with one being text, and the other being a data frame, now I just want to merge them into one as a text file. With linux, I can use: I wonder if we can do the same thing with R? Thanks alot Phuong Answer We can use file.append: Or if files are already imported into R,
Sending Stata output to a logfile under Ubuntu
I write the Stata do-file and run it with a script code under the Ubuntu system. The .sh file with the following contents: It will generate a log file with the name of mydofile.log after running the .sh code. My question is how to specify the path and name of this log file? Answer You could redirect stdrr and…
understanding syslog logs format [closed]
Closed. This question does not meet Stack Overflow guidelines. It is not currently accepting answers. This question does not appear to be about a specific programming problem, a software algorithm, or software tools primarily used by programmers. If you believe the question would be on-topic on another Stack …
Trying to download python from a docker container while using GitLab CI
The last stage of my GitLab CI pipeline is a selenium test. I’m trying to automate it through GitLab CI: I have tried writing this a few different ways– not installing curl, installing everything on a different line… But every time I get this same result: I understand that it is better to ha…
How to block the connection to an IP which is created in docker container on host
There is a docker container running in bridge network mode. Inside the container, it creates a connection to, say, 10.123.123.1:6666. I’d like to block this connection on host through IPTABLES, something like sudo iptables -I OUTPUT -p tcp -d 10.123.123.1 -j DROP, but it doesn’t work. Could anyone…