cur_shell.sh

#!/bin/zsh
# with bugs, can not use $$, it is the current pid, use $PPID instead

function Usage() {
    cat<<EOF
        change the parameter orders of the last command and execute again

        eg:
        for commmand 'ls -l -a -h'
        chargs 3 1 2
        will execute 'ls -h -l -a'

EOF
}


function Main() {
    local c_shell
    c_shell=$(get_shell)
    echo "current shell is *$c_shell*"
}


function get_shell {
    ps -ef | grep $$ | grep -v grep | grep -v ps | awk '{print $8}' | grep -v awk
}

Main