perl: force the use of command line flags?

I often write one-liners on the command line like so:

perl -Magic -wlnaF'\t' -i.orig -e 'abracadabra($_) for (@F)' 

In order to scriptify this, I could pass the same flags to the shebang line:

#!/usr/bin/perl -Magic -wlnaF'\t' -i.orig
abracadabra($_) for (@F);

However, there's two problems with this. First, if someone invokes the script by passing it to perl directly (as 'perl script.pl', as opposed to './script.pl'), the flags are ignored. Also, I can't use "/usr/bin/env perl" for this because apparently I can't pass argume开发者_Go百科nts to perl when calling it with env, so I can't use a different perl installation.

Is there anyway to tell a script "Hey, always run as though you were invoked with -wlnaF'\t' -i.orig"?

You're incorrect about the perl script.pl version; Perl specifically looks for and parses options out of a #! line, even on non-Unix and if run as a script instead of directly.

The #! line is always examined for switches as the line is being parsed. Thus, if you're on a machine that allows only one argument with the #! line, or worse, doesn't even recognize the #! line, you still can get consistent switch behavior regardless of how Perl was invoked, even if -x was used to find the beginning of the program.

(...)

Parsing of the #! switches starts wherever perl is mentioned in the line. The sequences "-*" and "- " are specifically ignored so that you could, if you were so inclined, say

#!/bin/sh
#! -*-perl-*-
eval 'exec perl -x -wS $0 ${1+"$@"}'
    if 0;

to let Perl see the -p switch.

Now, the above quote expects perl -x, but it works just as well if you start the script with

#! /usr/bin/env perl                                                   -*-perl -p-*-

(with enough characters to get past the 32-character limit on systems with that limit; see perldoc perlrun for details on that and the rest of what I quoted above).

I had the same problem with #!env perl -..., and env ended up being helpful:

$ env 'perl -w'
env: ‘perl -w’: No such file or directory
env: use -[v]S to pass options in shebang lines

So, just modify the shebang to #!/usr/bin/env -S perl -...