[SOLVED] How to swap parameters in Shell command

Issue

I have a command with parameters in shell. like

Command -a -b

assume a b are very long directory name, 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 the command, but this time I need to reverse a b order.

Command -b -a

Instead of retyping them again, is there any way to fast swap them?

Thanks in advance.

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
$ 

Answered By - Paul R

Answer Checked By - David Goodson (WPSolving Volunteer)