How to use "read" in Busybox v1.1.1 ?
Jody Bruchon
jody at jodybruchon.com
Wed May 13 11:56:32 UTC 2015
On 5/13/2015 7:45 AM, Mike Yates wrote:
> read -p "Enter name: " $name
>
> I have found that the "$" is the issue - Busybox will only accept a
> variable name without it, while Bash accepts either, or the null
> variable.
My understanding is that BusyBox does not attempt to support "Bashisms"
beyond a certain point and generally defers to the POSIX standard:
http://pubs.opengroup.org/onlinepubs/9699919799/utilities/read.html
POSIX does not specify a -p option. The correct way to do what you're
doing and maintain compliance is probably:
echo -n "Enter name: "
read name
Also note that the use of this Bashism results in the opposite of what
one would expect under POSIX. Here's what happens in BusyBox ash:
$ A=FOO
$ read $A
barbaz
$ set
A='FOO'
FOO='barbaz'
-Jody
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