How to swap parameters in shell command

bash, command, shell

Solution

Yes you can use history substitution:

$ echo foo bar
foo bar
$ !:0 !:2 !:1          # previous command with second arg then first arg
echo bar foo
bar foo
$

Problem

I have a command with parameters in a shell: ``` Command -a -b ``` Assume `a` and `b` are very long directory names, and they are not always the first and last parameters. However, I need to use this command again. I use Ctrl+p to go back to the previous command, but this time I need to reverse the order of `a` and `b`: ``` Command -b -a ``` Instead of retyping the parameters again, is there any way to swap them easily?

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