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shell:warp:49dd1

Get number of elements in an array

echo

$ echo ${#${array_name}[@]}

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This command is used to print the length (number of elements) of an array in Bash.

Here is how the command works:

${array_name[@]}: This is used to access all the values in the array array_name. The [@] notation treats each element in the array as a separate entity.
${#...}: This notation is used to get the length (number of characters) of a string or element. So, ${#${array_name}[@]} gives us the length of the array array_name.
echo: This command is used to print the value to the terminal.

Putting it all together, the command echo ${#${array_name}[@]} prints the length of the array array_name to the terminal.

This explanation was created by an AI. In most cases those are correct. But please always be careful and never run a command you are not sure if it is safe.

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