Re: [Help-bash] Something like die from perl in bash?

[Eric Blake]

On 01/28/2014 08:40 AM, Peng Yu wrote:
> Hi,
> 
> "die" in perl can print an error message as well as set the return
> code of the perl script. I frequently need to print an error message
> and exit with the last error code. I'd like to make it one line. Is it
> possible in bash?

Yes

> 
> prog_to_fail || exit $? # how to print an error message as well exit
> with the last status code?

fail () {
  echo your message here
  exit $1
}
prog_to_fail || fail $?

or even

fail() {
  st=$?
  echo your message here
  exit $st
}
prog_to_fail || fail

-- 
Eric Blake   eblake redhat com    +1-919-301-3266
Libvirt virtualization library http://libvirt.org

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