I have a very trivial bash script taking input from the user in the first step and then echo an output. I want to run the same script in different shells and let the first shell take input and echo its output and send it to the input of the other shell, and let the both of shells continue executing
Tag: linux
Using awk to parse and transform the following log
I have a log like this: I want to parse this log file and get all the following lines: Then I want to transform those lines into the following format for plotting: Here is my awk code: The thing I don’t like for this solution is: I must count manually the index of tokens generated by awk. I prefer a
Make Python script combined with linux packages easy installable for end-user
I wrote a python script that uses numpy, multiprocessing, tqdm and a feq other Python libraries. Additionally, I run packages (e.g. samtools, bwa, GATK) set are necessary to be installed in linux (apt-get install). I’d like to somehow wrap all these dependencies up to make the final installation as user…
How to deploy files to /boot partition with Yocto
I’m trying to deploy some binary files to /boot in a Yocto image for RPi CM3 but it deploys them to the wrong location. The files are deployed to /boot in the / partition of the final image, but not to the /boot partition. So they are not available at boot time. I already googled and studied the kernel …
Why is MAP_GROWSDOWN mapping does not grow?
I tried to create MAP_GROWSDOWN mapping with the expectation it would grow automatically. As specified in the manual page: MAP_GROWSDOWN This flag is used for stacks. It indicates to the kernel virtual memory system that the mapping should extend downward in memory. The return address is one page lower than t…
How to split a single XML file into multiple based on tags
I have an XML file that have tags. I want to split files like this. Below is the code tried . But it is generating every single line into a new file I want to split this file based on ORDER tags alone as mentioned below Answer With any awk in any shell on every UNIX box: it’s obviously fragile
Is time-slicing synchronous or asynchronous and why?
The interruptions that occur as a result of the computer’s chronometer indicating a termination of the time interval assigned to a process (time slice), are they classified as synchronous or asynchronous interruptions? Answer Time interrupts, as hardware interrupts are considered as all hardware interru…
How to precise the Perl version when creating a package using conda-build
I am trying to create a package for a Perl module I have and then put it in a local channel to be able to install it in a conda environement. I am trying to follow the conda documentation but as it’s the first time I’m trying to do that, I kind of lost myself. Doc to create a conda
What is actual full form of DHCP? what does C stands for control or configuration
What is the actual full form of DHCP Dynamic Host Configuration Protocol or Dynamic Host Control Protocol Answer Dynamic Host Configuration Protocol check out more info here
want to sort my log file on this timestamp 2019-06-29T12:39:23.428Z using sort command but confused as there are multiple delimeter
This is the format of timestamp on which 2019-06-29T12:39:23.428Z I want to sort. But the year is delimited by – and the time is delimited by : and both year and time are separated my T’. Tried this. Answer You can manually pick out each field to sort with -k from man: So something like this shoul…