shuf:tldr:60beb
shuf: Generate random numbers in range 1-10.
$ shuf --input-range=${1-10}
try on your machine
The command "shuf" is used to generate a random permutation of the lines from a given input. In this case, it is being used with the option "--input-range".
The ${1-10} is a syntax used in shell scripting to denote a default value if a variable (in this case, $1) is not provided. In this context, it means that if there is no argument provided, the range will default to 1-10.
So, when you execute the command "shuf --input-range=${1-10}", it will generate a random permutation of the lines within the specified range (1-10 if no argument is provided). The output will be the randomized lines.
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.