Questions tagged [bash-array]
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80 questions
2
votes
1
answer
196
views
How can I take a sub-array in bash of the first N elements of a string array with elements containing spaces?
This question is similar to this one but it differs from it:
Consider this array with string elements which may contain spaces:
a@W:$ arr=("eins" "zwei" "eins plus zwei" &...
- 250k
0
votes
2
answers
45
views
pipe to uniq from a variable not showing the desired output
I have a pipeline using array jobs and need to change the number of inputs for some steps. I thought about testing uniq since the only part changing in my folders are the last four characters (the hap ...
- 83.3k
1
vote
1
answer
741
views
Creating and appending to an array, mapfile vs arr+=(input) same thing or am I missing something?
Is there a case where mapfile has benefits over arr+=(input)?
Simple examples
mapfile array name, arr:
mkdir {1,2,3}
mapfile -t arr < <(ls)
declare -p arr
output:
declare -a arr=([0])="1&...
- 574k
0
votes
4
answers
172
views
bash - slice quoted substrings delimited by spaces into array
following example:
string=" 'f o o' 'f oo' 'fo o' "
array=($string)
echo "${array[0]}"
outputs:
'f
while the expected output is:
'f o o'
The only solution I came with is by ...
- 1,581
38
votes
15
answers
50k
views
Bash - reverse an array
Is there a simple way to reverse an array?
#!/bin/bash
array=(1 2 3 4 5 6 7)
echo "${array[@]}"
so I would get: 7 6 5 4 3 2 1
instead of: 1 2 3 4 5 6 7
- 395
2
votes
3
answers
434
views
Replace prefix string from lines in a file, and put into a bash array
In the file groupAfiles.txt are the lines:
file14
file2
file4
file9
I need a way to convert them to remove file and add /dev/loop and put them all in one line with a space between them.
/dev/loop14 /...
- 34.6k
3
votes
2
answers
2k
views
How to extract and delete contents of a zip archive simultaneously?
I want to download and extract a large zip archive (>180 GB) containing multiple small files of a single file format onto an SSD, but I don't have enough storage for both the zip archive and the ...
2
votes
1
answer
258
views
Why does printing an array with @ using printf in bash only print the first element?
I have an array
snapshots=(1 2 3 4)
When I run
printf "${snapshots[*]}\n"
It prints as expected
1 2 3 4
But when I run
printf "${snapshots[@]}\n"
It just prints
1
without a ...
- 279
0
votes
3
answers
117
views
bash array multiplication using bc
I am trying to multiply array values with values derived from the multiplication of a loop index using bc.
#!/bin/bash
n=10.0
bw=(1e-3 2.5e-4 1.11e-4 6.25e-5 4.0e-5 2.78e-5 2.04e-5 1.56e-5 1.29e-5 1....
- 574k
17
votes
4
answers
17k
views
Run a command using arguments that come from an array
Suppose I have a graphical program named app. Usage example: app -t 'first tab' -t 'second tab' opens two 'tabs' in that program.
The question is: how can I execute the command (i.e. app) from within ...
- 351k
1
vote
3
answers
3k
views
Bash: converting a string with both spaces and quotes to an array
I have a function (not created by me) that outputs a series of strings inside of quotes:
command <args>
“Foo”
“FooBar”
“Foo Bar”
“FooBar/Foo Bar”
When I try to assign it to an array (Bash; BSD/...
- 222
0
votes
2
answers
2k
views
Shell script with a for loop and an “array”
How can I use this shell script with for loop and an array.
I would like to call create condition for quality gate creation of sonarqube with a for loop. Example:
#!/bin/bash --login
echo "...
CommunityBot
- 1
1
vote
1
answer
333
views
Access values of associative array whose name is passed as argument inside bash function
I've some associative arrays in a bash script which I need to pass to a function in which I need to access the keys and values as well.
declare -A gkp=( \
["arm64"]="ARM-64-bit" ...
- 250k
3
votes
4
answers
3k
views
How do I select an array to loop through from an array of arrays?
#!/usr/bin/bash
ARGENT=("Nous devons économiser de l'argent."
"Je dois économiser de l'argent.")
BIENETRE=("Comment vas-tu?" "Tout va bien ?")
aoarrs=("${...
- 574k
2
votes
1
answer
287
views
What happens if I start a bash array with a big index?
I was trying to create a bash "multidimensional" array, I saw the ideas on using associative arrays, but I thought the simplest way to do it would be the following:
for i in 0 1 2
do
...
- 574k