Given the following simple snippet, saved in a file named test.sh: sleep 3 && exit 50& echo "Wait for ${!} for the first time." wait "${!}" echo "Exit code is: ${?}" sleep 1 # this line makes a difference echo…
I have a fasta file that looks like below: >sequence_1_g1 ATTTCGGATAA >sequence_2_g1 AGGCTCTAGGA >sequence_2_g2 TGTTCTGAAAT >sequence_2_g3 CACCTCGGAGT >sequence_3_new_g1 GCGGATAAAGC I'd like to only extract the numbers that comes after the last delimiter and attach them to the end of each…
A server has nginx falling over frequently and needs to have a sude service nginx restart executed. A suggestion has been the following bash script: service nginx status | grep 'active (running)' > /dev/null 2>&1 if [ $? != 0…
I bought a china usb 8 relay switch board. It shows up in ubuntu server as a serial device. I figured out the commands to get it to work. *Set Baud Rate of relay board stty -F /dev/ttyUSB0 9600 -parity…
I tried to use nasm in a bash project on Replit (educator) but it failed as nasm was not installed. However, there are some assembly projects on Replit. So I forked a project, added my code, and boom it worked.…
To start, I have done a lot of googling and tried grep, sed and awk, but was not able to find a solution with either. My goal is to find 2 patterns in a log file, but only if each…
I have a folder with several numeric subfolders: . ├── 1 ├── 2 ├── 3 ├── 4 └── 5_a I would like to find the one with the highest value. In this example it would be folder 4. The folders…
I am trying to measure the time it takes for a Kubernetes object to be deployed in a Kubernetes cluster by using the time utility. I am trying to do that severally with a time sleep to get values for…
I'm connected to a server with CentOS 6.10 from ssh user@server...... And, i have a bash script on this server, named by "jamaica.sh", the code is.... #!/bin/bash rm -rf jamaica.sh Simple, but que question is. I need to found a…
I'm migrating many bash shell scripts from old versions of raspbian and ubuntu to the current raspbian version. I've made a brand new system installation, including various configuration (text) files that I've created for these scripts. I found to my…