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Re: Posix is silent; Open Group is silent; feature is SVR4 & 4.3+BSD

This page is part of the web mail archives of SRFI 22 from before July 7th, 2015. The new archives for SRFI 22 are here. Eventually, the entire history will be moved there, including any new messages.



> From feeley@xxxxxxxxxxxxxxxx Tue May 22 14:10:54 2001
...deleted
> Rather than speculate about all the possible differences (/usr/bin/env
> vs. /bin/env, 32 character limit, space vs. no space), how about
> trying it out on a bunch of Unix implementations and reporting the
> results?
...deleted

Results included below.

> For this purpose I have written the script attached below.  Just put
> it in the file "testscript", type "source testscript" on the Unix
...deleted

Just a minor detail, but 'source' only works in csh (and derivates,
presumably including bash). 'Normal' shells (sh, ksh and rc :-), use
'.' instead. As in '. testscript'.

The results:

testscript 1.0
SunOS avc280 5.7 Generic_106541-15 sun4u sparc SUNW,Ultra-5_10
Tue May 22 14:24:06 MET DST 2001
-------------------- ./script1
#! /usr/bin/env cat
-------------------- ./script2
#!/usr/bin/env cat
-------------------- ./script3
#! /usr/bin/env cat
#! /usr/bin/env ./script3-helper-file890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567
-------------------- ./script4
#!/usr/bin/env cat
#!/usr/bin/env ./script4-helper-file7890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567
-------------------- ./script5
#! /bin/env cat
-------------------- ./script6
#!/bin/env cat
-------------------- ./script7
#! /bin/env cat
#! /bin/env ./script7-helper-file4567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567
-------------------- ./script8
#!/bin/env cat
#!/bin/env ./script8-helper-file34567890123456789012345678901234567890123456789012345678901234567890123456789012345678901234567