A replace function. Like "[CMD] !!" but replacing the previous command instead if prefixing.

.bashrc

# A replace function. Like "[CMD] !!" but replacing the previous command instead if prefixing.
# Usage: __ [CMD]
function __() {
    __=$(history -p \!\!)
    [[ "$(echo '$__' | cut -d' ' -f1)" == "__" ]] && history -d $(history | tail -n1 | cut -d' ' -f2)
    export __=${__/$(echo $__ | cut -d' ' -f1)/$1}
    echo "$__"
    $__
    history -s "$__"
}