linux shell命令之trap之捕捉信号EXIT

cat trapexit.sh
#!/bin/bash

fun1()
{
echo "This is an correct function"
var=2010
return 0
}

trap 'echo "Line:$LINENO, var=$var"' EXIT #trap命令捕捉EXIT
fun1 #调用fun1函数

./trapexit.sh
This is an correct function
Line:1, var=2010