Running under Windows, I have no need for a "shebang" line. Windows associates a file to its type via the file name's extension or a constant signature at some fixed offset in the file, and does not hard-code the location of the executable in the file. Until reciently the Mac has stored a file type as meta-data which is not in the file's text, so those users have to set the type themselves after downloading, anyway. VMS is totally different, and (according to perlrun) uses a couple lines at the top of the file that would not run on other systems (since it doesn't look like a Perl comment).
So, it looks like Unix systems are the only kind I can really address in regards to making my script friendly across systems. I can put a shebang (why isn't that shAbang, if it's short for sharp-bang?) line at the top of the script that I publish.
So the question is, what should it say? Different people install Perl in different places! Perlrun encourages two "standard" locations to be symlinks to the actual binary, and I suppose something like that is common on Unix systems. Is one better than the other? What do people really like to use these days? It also mentions the use of the env program which adds a level of indirection (sounds like a good idea) but mentions that not everyone has that.
So, what's the "best practice" for setting up the shebang line?
Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
Read Where should I post X? if you're not absolutely sure you're posting in the right place.
Please read these before you post! —
Posts may use any of the Perl Monks Approved HTML tags:
You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
- a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.
| & || & |
| < || < |
| > || > |
| [ || [ |
| ] || ] ||