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From: Ilkka Virta <itvirta@iki.fi>
Newsgroups: gnu.bash.bug
Subject: Re: built-in '[' and '/usr/bin/[' yield different results
Date: Tue, 13 Nov 2018 19:54:28 +0200
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Xref: csiph.com gnu.bash.bug:14815

On 13.11. 18:29, Service wrote:
>  =C2=A0=C2=A0 =C2=A0# Put the above commands into a script, say check.s=
h
>  =C2=A0=C2=A0 =C2=A0# Run with: /bin/sh < check.sh
>  =C2=A0=C2=A0 =C2=A0# Or=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 : /bin/sh ./chec=
k.sh
>  =C2=A0=C2=A0 =C2=A0# Or=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 : /usr/bin/env .=
/check.sh
>=20
>  =C2=A0=C2=A0 =C2=A0# Output is always not ok:
>  =C2=A0=C2=A0 =C2=A0not_nt
>  =C2=A0=C2=A0 =C2=A0nt

  $ cat check.sh
  export PATH=3D""
  /bin/touch file1
  /bin/rm -f file2
  if          [ file1 -nt file2 ]; then echo nt; else echo not_nt; fi
  if /usr/bin/[ file1 -nt file2 ]; then echo nt; else echo not_nt; fi

  $ bash ./check.sh
  nt
  nt

  $ /bin/sh ./check.sh
  not_nt
  nt

Isn't that Windows Linux thingy based on Ubuntu? /bin/sh isn't Bash by=20
default on Debian and Ubuntu, so it might be you're just not running the=20
script with Bash.


--=20
Ilkka Virta / itvirta@iki.fi