Questions tagged [declare]
The declare tag has no usage guidance.
1
vote
2answers
67 views
What is a variable attribute?
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 ...
7
votes
1answer
199 views
Does `declare -a A` create an empty array `A` in Bash?
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 ${#A[*...
5
votes
3answers
443 views
What is “declare” in Bash?
After reading ilkkachu's answer to this question I learned on the existence of the declare (with argument -n) shell built in.
help declare brings:
Set variable values and attributes.
Declare ...
3
votes
3answers
775 views
Function to conditionally set a variable read-only
If I had a script which sets variables read-only to some odd values, and sets errexit because of other unsafe operations:
#!/bin/bash
set -e
declare -r NOTIFY=$(case "$OS" in (macosx) echo ...
0
votes
2answers
25 views
Parse 3rd entry in declare result
I have this:
cd 31
/Users/alexamil/WebstormProjects/oresoftware/botch/botch-shell-overrides.sh
the above style output, is given by this command:
declare -F my_bash_func
How can I grab just the ...
