Beefy Boxes and Bandwidth Generously Provided by pair Networks
P is for Practical
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

I encountered a problem with the shebang line using openSUSE.

For testing purposes, I narrowed this down to one of the simplest of scripts (test_shebang.pl):

#!/usr/bin/env perl -l print 'Hello, world!';

When I attempt to run this, I get:

ken@ibm-laptop:~/tmp> test_shebang.pl /usr/bin/env: perl -l: No such file or directory

It's not a $PATH or permission issue:

ken@ibm-laptop:~/tmp> echo $PATH <list of unrelated paths>:. ken@ibm-laptop:~/tmp> which test_shebang.pl /home/ken/tmp/test_shebang.pl ken@ibm-laptop:~/tmp> ls -l test_shebang.pl -rwxr-xr-x 1 ken users 48 Mar 24 10:29 test_shebang.pl

I've checked for any problematic characters that might have been present, but found none:

ken@ibm-laptop:~/tmp> cat -vet test_shebang.pl #!/usr/bin/env perl -l$ $ print 'Hello, world!';$ $

When changing the shebang line to any of the following, the scripts run with expected output (i.e. prints "Hello, world!" with or without "\n"):

#!/usr/bin/env perl #!/usr/bin/perl -l #!/usr/bin/perl

The '-l' switch appears to work correctly from the command line:

ken@ibm-laptop:~/tmp> perl -e 'print "Hello, world!"' Hello, world!ken@ibm-laptop:~/tmp>
ken@ibm-laptop:~/tmp> perl -le 'print "Hello, world!"' Hello, world!

The platform is "openSUSE Leap 42.1" and the Software Updates notification is telling me "Your system is up to date" (after running "Check For Updates"). Other relevant info:

ken@ibm-laptop:~/tmp> perl -v | head -2 | tail -1 This is perl 5, version 18, subversion 2 (v5.18.2) built for x86_64-li +nux-thread-multi ken@ibm-laptop:~/tmp> uname -a Linux ibm-laptop 4.1.34-33-default #1 SMP PREEMPT Thu Oct 20 08:03:29 +UTC 2016 (fe18aba) x86_64 x86_64 x86_64 GNU/Linux

I'm using a borrowed laptop (the owner is not currently contactable) and I'm not overfamiliar with openSUSE: perhaps I just need to tweak a setting. Neither Super Search nor Internet searches have proved fruitful.

Any help would be appreciated.

— Ken


In reply to shebang problem on openSUSE by kcott

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 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?Last hourOther CB clients
Other Users?
Others chanting in the Monastery: (4)
As of 2024-04-19 04:06 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found