Shuffle random list of COMMANDS in BASH?-CodePudding

I have a list of commands in a text file named commands.txt:

cat file1.txt | sort > file1.txt
cat file2.txt | sort > file2.txt
etc

What I want to do is randomize that file and then execute each line in random order. I have tried the following in a cmd.sh shell script:

while read -r -a array
do
    "${array[@]}"
done < <(shuf commands.txt)

And all Bash does is yell at me that it's a syntax error with an unexpected token <

This is on MacOS 10.14 with bash 3.2.57 and zsh 5.8.

Does anyone know how to do this?

CodePudding user response：

You can pipe the shuffled commands to bash without any processing:

shuf commands.txt | bash

CodePudding user response：

Pipes (|) and redirection (>) will not work in a variable. You can use eval "${array[@]}", or bash -c "${array[*]}" instead.

Also if you do cat file > file, file will be truncated (emptied) before cat is executed. So you'll just have empty files. You can do sort file1.txt > tmp && mv tmp file1.txt