Date: Mon, 22 Oct 2018 15:30:40 +0300 From: Yuri Pankov <yuripv@yuripv.net> To: Eugene Grosbein <eugen@grosbein.net>, Freebsd hackers list <freebsd-hackers@freebsd.org> Subject: Re: shell read built-in Message-ID: <4ad1ea37-4714-a104-89a2-d7aef70d0f89@yuripv.net> In-Reply-To: <2fff355e-a729-d5d3-8199-f2bbba80c112@grosbein.net> References: <2fff355e-a729-d5d3-8199-f2bbba80c112@grosbein.net>
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Eugene Grosbein wrote:
> Hi!
>
> $ echo test | read line; echo $?
> 0
> $ echo -n test | read line; echo $?
> 1
>
> Is it right behavior for /bin/sh?
> This makes it hard for "while read line ... < file"
> to process last line if it is not followed by new line character.
POSIX defines the exit status for read as (and sh(1) says the same):
The following exit values shall be returned:
0 Successful completion.
>0 End-of-file was detected or an error occurred.
...and looks like all of /bin/sh, bash, ksh93 seem to agree on the
behavior here.
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