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Date:      Wed, 1 Feb 2017 01:26:05 +0000
From:      Manish Jain <bourne.identity@hotmail.com>
To:        "freebsd@edvax.de" <freebsd@edvax.de>
Cc:        "freebsd-questions@freebsd.org" <freebsd-questions@freebsd.org>
Subject:   Re: Variable assignment in sh
Message-ID:  <VI1PR02MB09748570B8832CAA397D19FFF64D0@VI1PR02MB0974.eurprd02.prod.outlook.com>
In-Reply-To: <20170201014858.eec196d0.freebsd@edvax.de>
References:  <b831bd9e40321e59910ea8913c7a6302.squirrel@webmail.harte-lyne.ca> <20170131161824.a9f1ef46.freebsd@edvax.de> <b553c644fccc211f9658b31cfe65e8a0.squirrel@webmail.harte-lyne.ca> <20170131185103.7f911dfb.freebsd@edvax.de> <5f51e2c3bdb8a20c6a7786c2b345c957.squirrel@webmail.harte-lyne.ca> <alpine.BSF.2.20.1701311445520.54303@wonkity.com> <20170201014858.eec196d0.freebsd@edvax.de>

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On 02/01/2017 06:18 AM, Polytropon wrote:
> Additionally, it helps to write portable scripts (across
> different operating systems), not just for FreeBSD systems

A point here for bash scripting. I earlier used to shebang with the path=20
to bash :

#!/usr/local/bin/bash

Since my scripts sometimes needed to be ported to Linux and/or Cygwin, I=20
often hacked the system with a symlink /bin/bash that pointed to the=20
actual bash. Then I would use the symlink path - that worked under both=20
FreeBSD and Linux.

But a much better way now exists with env :

#!/usr/bin/env bash

The above shabang always works, no matter what the system, is fully=20
portable, and is not too much typing either.


Regards
Manish Jain



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