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From: Daniel Isaksen <d@duniel.no>
Date: Thu, 1 Nov 2018 10:55:30 +0100
Message-ID: <CAFWK1CAJD8X6gd9HTdHH_UOkoYio4SyOk6NSB=b5h6o9JLDjTQ@mail.gmail.com>
Subject: Re: [alpine-user] "set -xe" command in Dockerfile
To: Ivan Shibkikh <ivan.shib@gmail.com>
Cc: alpine-user@lists.alpinelinux.org
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Basically makes the shell write traces for expanded commands before they're
executed, and for the shell to exit on non-zero exit statuses:

       =E2=88=92x    The  shell  shall  write  to  standard  error  a trace=
 for
each command after it expands the command and before it executes it. It is
             unspecified whether the command that turns tracing off is
traced.


       =E2=88=92e    When this option is on, when any command fails (for an=
y of the
reasons listed in Section 2.8.1, Consequences of Shell  Errors  or  by
             returning an exit status greater than zero), the shell
immediately shall exit with the following exceptions: *(...)*

-----
Sincerely / Med vennlig hilsen,
Daniel Isaksen <d@duniel.no> (https://duniel.no)

On Thu, Nov 1, 2018 at 10:41 AM, Ivan Shibkikh <ivan.shib@gmail.com> wrote:

> Hi All,
>
> I spent time to find answer but without success. I found this email on
> main Alpine web site. Can someone explain what does it mean "set -xe"
> command in Dockerfile? Context is:
>
> RUN set -xe && apk add ...
>
> Thanks,
> Ivan
>

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<div dir=3D"ltr"><div dir=3D"ltr"><div dir=3D"ltr"><div><span style=3D"font=
-size:small;background-color:rgb(255,255,255);text-decoration-style:initial=
;text-decoration-color:initial;float:none;display:inline">Basically makes t=
he shell write traces for expanded commands before they&#39;re executed, an=
d for the shell to exit on non-zero exit statuses:</span></div><div><span s=
tyle=3D"font-size:small;background-color:rgb(255,255,255);text-decoration-s=
tyle:initial;text-decoration-color:initial;float:none;display:inline"><br><=
/span></div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0=E2=88=92x=C2=A0 =C2=A0 The=C2=
=A0 shell=C2=A0 shall=C2=A0 write=C2=A0 to=C2=A0 standard=C2=A0 error=C2=A0=
 a trace for each command after it expands the command and before it execut=
es it. It is</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0unsp=
ecified whether the command that turns tracing off is traced.</div><div><br=
></div><div><div><br></div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0=E2=88=92e=C2=A0=
 =C2=A0 When this option is on, when any command fails (for any of the reas=
ons listed in Section 2.8.1, Consequences of Shell=C2=A0 Errors=C2=A0 or=C2=
=A0 by</div><div>=C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0returning =
an exit status greater than zero), the shell immediately shall exit with th=
e following exceptions: <i>(...)</i></div></div></div></div></div><div clas=
s=3D"gmail_extra"><br clear=3D"all"><div><div class=3D"gmail_signature" dat=
a-smartmail=3D"gmail_signature"><div dir=3D"ltr"><div>-----</div><div>Since=
rely / Med vennlig hilsen,</div><div>Daniel Isaksen &lt;<a href=3D"mailto:d=
@duniel.no" target=3D"_blank">d@duniel.no</a>&gt; (<a href=3D"https://dunie=
l.no" target=3D"_blank">https://duniel.no</a>)</div></div></div></div>
<br><div class=3D"gmail_quote">On Thu, Nov 1, 2018 at 10:41 AM, Ivan Shibki=
kh <span dir=3D"ltr">&lt;<a href=3D"mailto:ivan.shib@gmail.com" target=3D"_=
blank">ivan.shib@gmail.com</a>&gt;</span> wrote:<br><blockquote class=3D"gm=
ail_quote" style=3D"margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-le=
ft:1ex"><div dir=3D"ltr"><div>Hi All,</div><div><br></div><div>I spent time=
 to find answer but=20
<span id=3D"m_5394739867376202271gmail-result_box" class=3D"m_5394739867376=
202271gmail-short_text" lang=3D"en"><span class=3D"m_5394739867376202271gma=
il-">without success. I found this email on main Alpine web site. Can someo=
ne explain what does it mean &quot;set -xe&quot; command in Dockerfile? Con=
text is:</span></span></div><div><br></div><div></div>
<div><span class=3D"m_5394739867376202271gmail-pl-k">RUN</span> set -xe &am=
p;&amp; apk add ...<br></div><div></div><div><br></div><div>Thanks,</div><d=
iv>Ivan<br></div></div>
</blockquote></div><br></div>

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