Questions tagged [declare]

Question 1

I've read what's listed in Bibliography regarding unset, declare, local and "Shell Functions". My version of Bash is GNU bash, version 5.1.16(1)-release (x86_64-pc-linux-gnu) var='outer' ...

Question 2

Our RHEL8 servers don't have nc available, but at some time in the past someone using this shared account defined an nc function: $ declare -f nc | head -1 nc () $ I am trying to determine where this ...

Question 3

Main question: how would one get the delta for declare -F, between that in the current shell, and that as if the shell just started (first two commands below). $(declare -F) does not solve the ...

Question 4

This is specifically about bash's declare - the general case is pretty exhaustively dealt with in this answer (which mentions "the typeset/declare/export -p output of ksh93, mksh, zsh" but ...

Question 5

I'm attempting to write a function that writes arrays with a name that's passed in. Given the following bash function: function writeToArray { local name="$1" echo "$name" ...

Question 6

How do I get the FZF Preview Window to Display Functions from my Current Bash Environment? I want to list my custom bash functions using FZF, and view the code of a selected function in the FZF ...

Question 7

With bash >5, I'm trying to assign a different value to variables depending on the architecture specified in a variable. I use a function to do so. This works perfectly: # arguments: variable ...

Question 8

I downloaded the CLI Client habash for the habit/routine gameification project habatica.com. In the fandom wiki for habash it is written that, I need to set environment variables. Additonally I want ...

Question 9

I learned from the following sources: curl -O: Download a file with curl on Linux / Unix command line jq: How to urlencode data for curl command? Multiple files and curl -J: download pdf files from ...

Question 10

I stumbled by accident on the following bash behaviour, which is for me kind of unexpected. # The following works $ declare bar=Hello # Line 1 $ declare -p bar ...

Question 11

I'm new to bash. I'm trying to write a script that will read data from a text find and declare some variables. In the example below we read from a tab delimited file "ab.txt" that looks like this: ...

Question 12

I have this very simple script: #!/bin/bash read local _test echo "_test: $_test" This is the output. $ ./jltest.sh sdfsdfs _test: I want the variable _test to be local only. Is this possible?

Question 13

I aim to understand the general concept of "variable attributes" hoping it will help me understand what is declare in Bash. What is a variable attribute? Why would someone want to give an attribute ...

Question 14

Does declare -a A create an empty array A in bash, or does it just set an attribute in case A is assigned to later? Consider this code: set -u declare -a A echo ${#A[*]} echo ${A[*]} A=() echo ${#A[*...

Question 15

After reading ilkkachu's answer to this question I learned on the existence of the declare (with argument -n) shell built in. help declare brings: Set variable values and attributes. Declare ...

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Questions tagged [declare]

bash - how to remove a local variable (inside a function)

What is bash declare built-in reporting here?

Obtaining the delta for 'declare -F' between current and clean shell environments

Is the output of `declare -p <variable>` in bash guaranteed to be reusable as shell input?

Bash create parameter named array within function

Cannot Display Bash Functions within FZF Preview Window

Why does substituting eval with declare (for creating dynamic variables) result in an empty variable?

correct way of storing external programm and making it executable?

Using cURL, jq, and declaration and for loop condition, I tried to download multiple files from a GitLab private repo, but it downloaded only one

Declare command and shell expansion

Reading variable from a txt file using bash

How to read keyboard input and assign it to a local variable?

What is a variable attribute?

Does `declare -a A` create an empty array `A` in Bash?

What is "declare" in Bash?

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