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Questions - shell

Get value of variable that contains a variable

I have a variable $path with a value of "/home". The variable $path is stored in a text file like this: $path/programs In my script, I am getting the line from the text file and setting it ...
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Moses Davidowitz

bash

shell

Votes: 0

Answers: 1

Latest Answer

You are probably doing something like : export path=/home echo '$path/programs' > test-file full_path="$(cat test-file)" echo "$full_path" You can substitute variables with en...
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Philippe

Running Impala query from shell script

I want to write a shell script to invoke an Impala query. I want to check count of a table is 0 or not. If 0, then I need to fail the workflow. I am pretty new to shell script, any help is appreciated...
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Andy

shell

impala

Votes: 0

Answers: 0

Constantly print volume of raw PCM audio stream to terminal as a number from 0 to 1?

Currently, I am trying to read the volume / gain of a raw 16 bit PCM audio stream. Basically, I'd like to be able to pipe a stream into an executable and print a number in a range from 0 (no sound) to...
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SkyyySi

c

linux

shell

rust

pcm

Votes: 0

Answers: 0

Use scala to create an interactive shell

I am teaching myself Scala and I am doing this exercise where I need to create an interactive shell/console app where the user can introduce an OS path (as a string) to a directory and the program mus...
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MrMuppet

scala

shell

console

Votes: 0

Answers: 0

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