Bash: Use Associative Array: Difference between revisions

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m Text replacement - "mlw-continue" to "code-continue"
 
Line 5: Line 5:
cat bash-associative-array-simple.sh
cat bash-associative-array-simple.sh
</syntaxhighlight>
</syntaxhighlight>
<syntaxhighlight lang="bash" line="1" class="mlw-continue">
<syntaxhighlight lang="bash" line="1" class="code-continue">
#!/bin/bash
#!/bin/bash


Line 36: Line 36:
cat bash-associative-array-extended.sh
cat bash-associative-array-extended.sh
</syntaxhighlight>
</syntaxhighlight>
<syntaxhighlight lang="bash" line="1" class="mlw-continue">
<syntaxhighlight lang="bash" line="1" class="code-continue">
#!/bin/bash
#!/bin/bash


Latest revision as of 07:30, 26 September 2022

Lin­ux Serv­er

Sim­ple ex­am­ple

cat bash-associative-array-simple.sh

#!/bin/bash

declare -A content_cats
content_cats=(
    ["WordPress"]="This category contains..."
    ["MediaWiki"]="This category contains..."
    ["HTML and CSS"]="This category contains..."
    ["Linux Desktop"]="This category contains..."
    ["Linux Server"]="This category contains..."
)

for key in "${!content_cats[@]}"; do
  echo -e "$key \t => ${content_cats[$key]}"
done

./bash-associative-array-simple.sh

MediaWiki        => This category contains...
Linux Desktop    => This category contains...
HTML and CSS     => This category contains...
Linux Server     => This category contains...
WordPress        => This category contains...

Ex­tend­ed ex­am­ple

As you can see in the above ex­am­ple the ar­ray con­tent is print­ed in wrong or­der. We can solve this is­sue by the fol­low­ing ap­proach, pro­vid­ed by Jonathan Lef­fler at Stack Over­flow, where is used one ad­di­tion­al ar­ray that holds the prop­er or­der.

cat bash-associative-array-extended.sh

#!/bin/bash

declare -A content_cats
content_cats=(
    ["WordPress"]="This category contains..."
    ["MediaWiki"]="This category contains..."
    ["HTML and CSS"]="This category contains..."
    ["Linux Desktop"]="This category contains..."
    ["Linux Server"]="This category contains..."
)

declare -a content_cats_order
content_cats_order=(
    "WordPress"
    "MediaWiki"
    "HTML and CSS"
    "Linux Desktop"
    "Linux Server"
)

for key in "${content_cats_order[@]}"
do
    echo -e "$key \t => ${content_cats[$key]}"
done

./bash-associative-array-extended.sh

WordPress        => This category contains...
MediaWiki        => This category contains...
HTML and CSS     => This category contains...
Linux Desktop    => This category contains...
Linux Server     => This category contains...

Ref­er­ence man­u­al

Ref­er­ences


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