Chet,
Sorry again for pulling the wrong Bash 4 doc.
Based on the input, I'm assuming that the portable way (bash 3, bash 4 and
POSIX) to retrieve $? When running under "-e" is to use the PIPE
CMD_STAT=0 ; GET_MAIN_DATA || CMD_STAT=$?
If [ "$CMD_STAT" = 11 ] ; then
GET_BACKUP_DATA
Fi
Any other suggestion for portable code will be appreciated.
Yair.
-----Original Message-----
From: Chet Ramey [mailto:chet.ra...@case.edu]
Sent: Friday, April 12, 2013 11:16 AM
To: Lenga, Yair [ICG-MKTS]
Cc: 'bug-bash@gnu.org'; chet.ra...@case.edu
Subject: Re: Bash4: Problem retrieving "$?" when running with "-e"
On 4/12/13 7:44 AM, Lenga, Yair wrote:
> The man page says that '-e' will "exit immediately if a simple command (note
> Simple Command::) exits with non-zero status unless ...".
> The "simple commands" definition is a "sequence of words separate by blanks
> ...". According to this definition, the sequence "( simple command )"
> Is NOT a simple command, and should NOT trigger the "immediate exit".
>
> Can anyone comment on my interpretation. Is there alternative solution
> that will allow retrieval of the status of single commands when running With
> the '-e' ?
You appear to be using bash-4.x and reading the bash-3.x manual page.
The bash-4.0 man page says
Exit immediately if a \fIpipeline\fP (which may consist of a single \fIsimple
command\fP), a \fIsubshell\fP command enclosed in parentheses, or one of the
commands executed as part of a command list enclosed by braces (see .SM .B
SHELL GRAMMAR
above) exits with a non-zero status.
The same language is in the man page through bash-4.2.
There has been extensive discussion of the changes to -e between bash-3.2 and
bash-4.0, which brought bash closer to Posix. Bash wasn't totally
Posix-conformant until bash-4.2.
See http://lists.gnu.org/archive/html/bug-bash/2012-12/msg00102.html for a
summary.
Chet
--
``The lyf so short, the craft so long to lerne.'' - Chaucer
``Ars longa, vita brevis'' - Hippocrates
Chet Ramey, ITS, CWRU c...@case.edu http://cnswww.cns.cwru.edu/~chet/
