function _echo_1(){
echo 1
}
function _print(){
echo 0
}
function do_process(){
eval "_print"
}
alias _print="_echo_1"
_print
do_process
运行结果;
function _echo_1(){
echo 1
}
function _print(){
echo 0
}
function do_process(){
_print
}
alias _print="_echo_1"
_print
do_process
运行结果: