I am trying to unset environment variables in my code in teardown block. Is there a command to unset all variables at once? For example i am setting the following environment variables i am using unset command to unset the variables is there a command to unset all at once something like, unset all Answer You definitely can unset all
Tag: shell
Dockerfile – can’t unzip files using a shell script
I’m facing an issue unziping files that have been copied on a docker image. I tried using the RUN unzip /file.zip and other techniques that I came across but nothing seems to work. So then I tried adding the unziping action into the a shell script that I use as entrypoint for my docker image. Here is the yaml file
not sure what’s the problem with this “regex” in the “grep” shell command
This was my attempt: I’m on hackerRank. I have this file that is delivered to my stdin. I need as a result lines that contains : Answer In a POSIX BRE pattern, when you use a “shorthand character class” like s, w, even in GNU grep, these escape sequences are treated as separate chars, a backslash and a letter. [D]{1,}
Text file is busy error from a shell script file
I am currently working on a project that writes and executes a shell script based on the input of the user. And I run the Shell file with this: But whenever the code executes the shell script, I get the error message: Text file is busy Answer All I had to do is close the file before executing it as
Cross-platform method to detect whether /dev/tty is available & functional
I have a bash script from which I want to access /dev/tty, but only when it’s available. When it’s not available (in my case: when running my script in GitHub Actions) then when I try to access it I get /dev/tty: No such device or address, and I’m trying to detect that in advance to avoid the error and provide
how to for loop a jq array result in shell script
I have a json data as below now I can use below command line to get a list containing two dict, each dict have a key “data”, value is a list, I want to print each dict with a loop in shell script My except in each loop have printed a dict, total have 2 dict But it seems like
Reading and exporting key-value pairs from a file in bash script (without caching)
I have the following project directory structure: Where run.sh looks like: Where .env is a properties file of key=value pairs like so: The setenv.sh script needs to read the key-value pairs out of .env and export/source them, so that run.sh can reference them at runtime and they will evaluate to whatever their values are in .env. The run.sh script and
Linux, how to parsing for pci express NVMe?
I’m working on bash script getting the pci nvme address for hot reset. I want to parsing for pci express nvme ADDRESS (i.e /sys/devices/pci0000:00/0000:00:01.2/0000:01:00.2/0000:02:00.0/0000:03:00.0/nvme/nvme0 how can i do this? I want to parse the address value before nvme. Answer You can use cut with / as the delimiter.
Jmeter Creating/Editing on .sh file linux
can someone help me simulate this scenario, example I will create/update the .sh file. Tried to used “SSH Command Sampler” and used this command “vi testralph123.txt” but it doesn’t work. SSH Command usually works if the Linux command is retrieve like “ls”. Your response is highly appreciated. Thank you so much in advance. Expected Result: upon invoking a sample it
Delete newlines from all elements of a array in shell
I try to solve a problem in shell. Im trying to find a way to delete all newlines from each element of an array. I tried to do this with a for loop. The Strings look like this (always three numbers, separated with dots) “14.1.3n” and I need to get rid of the newline at the end. This is what