On 1/25/10 8:32 AM, mike bakhterev wrote:
> Bash Version: 4.0
> Patch Level: 35
> Release Status: release
>
> Description:
> Something is wrong with variable substitution in the exec invocation.
> When i try to close file descriptor whose number is in variable X with
> command:
>
> exec $X>&-
>
> Bash reports:
>
> exec: NUMBER: not found
The file descriptor number must be a decimal number specifying the fd to
close; it cannot be a word and is not subject to expansion. If you use
`eval', you will get the results you want.
Bash-4.1 introduces a new redirection syntax that does what you want:
exec {X}>&-
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU [email protected] http://cnswww.cns.cwru.edu/~chet/
