Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Actually $0 is the currently executing program, which varies system to system. See perlvar for more detail.

On Solaris 8, it's likely to be something like /usr/bin/perl /path/to/perl/script, not at all like the filename given by warn or die.
On Linux (or at least this Linux box) it is the script name.

Update: Correction; after re-reading perlvar myself, it states "$0...Contains the name of the file containing the Perl script being executed".
However, my comment about it varying OS to OS stands.

Update 2: I am an idiot. I've double checked, following vek's post (++); he's quite right. $0 does exactly as advertised.
All I need to do now is remember where I saw a script reported as I originally and incorrectly reported - ps probably. *Sigh*


If the information in this post is inaccurate, or just plain wrong, don't just downvote - please post explaining what's wrong.
That way everyone learns.


In reply to Re: Re: Line Numbers by BazB
in thread Line Numbers by Sprad

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others exploiting the Monastery: (4)
As of 2022-05-28 04:51 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Do you prefer to work remotely?



    Results (98 votes). Check out past polls.

    Notices?