use local and $?

[l_j_f]

1. bash version

-sh-4.3# bash --version

GNU bash, version 4.3.0(1)-release (arm-hisiv200-linux-gnu)

Copyright (C) 2013 Free Software Foundation, Inc.

License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>

 

This is free software; you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.

 

2. the script

#!/bin/bash

 

ok() {  

        echo ok  

}                      

                       

error() {                                                

        echo error                                       

        return 1                                         

}                                                        

                                                         

                                                         

main() {                                                 

        local err                                        

                                                         

        local a=$(ok); err=$?                            

        echo a=$a err=$err

             

        local b=$(error); err=$?

        echo b=$b err=$err

}  

main "$@"

 

3. the result

-sh-4.3# ./test2.sh 

a=ok err=0

b=error err=0 #I think it should be "b=error err=1"

 

 

 

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l_j_f