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shell:warp:efc39
Get a value from an array
$ echo $${{array_name}[${index}]}
try on your machine
This command is used to print the value of a specific element in an array in the Bash shell scripting language.
Let's break it down:
echo
is the command used to print output to the console.$
is the prefix to indicate a variable.array_name
is the name of the array you want to access.${}
is used to enclose the variable name to ensure correct replacement.index
is the specific element you want to access in the array. It should be a numerical value representing the position of the element in the array.
Putting it all together:
$${{array_name}[${index}]}
- The first
$
ensures variable substitution. ${array_name}
gives us the value of thearray_name
variable (which should be the name of the desired array).[${index}]
appends the value of theindex
variable inside[]
to specify the desired element in the array.
- The first
The command effectively prints the value of a specific element in the array.
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.