I have created one mib file where five variables are added. Also by using the following command I’m able to see the OID’s of the all varialbes. After this by using “PASS protocol” I tried to get the data from the one variable with the help of following script file After running the abo…
Why string shown up in Shared Library file like .so file in Linux?
May I know why the .so file in linux will show up the string value from my cpp code? Even with fvisibility=hidden set in gcc make. for example, i set “Hello World” and it will show up. I tried google but found nothing related.. Thanks. Answer -fvisibility=hidden only affects the linker visibility,…
Can an already opened FILE handle reflect changes to the underlying file without re-opening it?
Assuming a plain text file, foo.txt, and two processes: Process A, a shell script, overwrites the file in regular intervals $ echo “example” > foo.txt Process B, a C program, reads from the file in regular intervals fopen(“foo.txt”, “r”); getline(buf, len, fp); fclose(fp…
Calling libc functions from another shared library in AT&T syntax?
i was trying to assemble codes below to shared library via gcc. i used command below in terminal and got errors. Then i googled the question and got a seemingly feasible answer in undefined-reference-to-main-for-shared-library. Then i added option -no-pie, used commands below and got another error. It seems t…
Bash script conversion to fish
I’m trying to convert this script to fish: https://github.com/masahide/OmniSSHAgent/blob/main/hack/ubuntu-bash.setup.sh This is my progress so far: It should be fully converted except that main command substitution in the last function: that raises this error: And I don’t understand how to convert…
Slurm job arrays don’t work when used in argparse
I am trying to run multiple things at once (i.e. in a parallel manner) with different values of the variable –start_num. I have designed the following bash script, Then, I ran sbatch –exclude master array_bash_2, but it doesn’t work. I have tried searching many sites and have tried multiple …
Linux systemd service file to start and stop a minecraft server
I am trying to run a minecraft server on a remote linux instance. I would like the instance to start up the server on a screen named serverscreen which is owned by the user named minecraft once the system boots up, and run a stop command to the serverscreen when the instance shuts down. Then, it needs to wait…
How to get difference between 2 dates (Z format) in milliseconds
Well I’m trying to get the difference between two dates in Seconds.MilliSeconds The dates are in Zulu format I have tried these two approaches doesn’t work out for me Is there any better way to get the difference in Seconds.MilliSeconds In linux for Z format time zones Answer Suggesting Output:
Bash: No such file or directory when running shell comands with node.js spawn on linux
I wrote the following web server in node.js using express and hbs that can run shell files, but I keep getting the following error when I type this url into a web browser linux username here is replaced with my linux username Contents of nodejs file: This is the contents of run.sh: Answer Hello, I don’t…
How to use Ansible to add Linux environment variables
I’m trying to add environment variables to a Linux machine using vars like below: I’m using this task to add the variables to /etc/environment. But I’m getting the error below: What am I missing here? Answer The playbook below works as expected and created the file I only added the parameter…