Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
so exec always invokes the shell?
#!/usr/bin/perl -- use strict; use warnings; my $perl = 'perl'; # $^X; my @args ; if( @ARGV ){ # no output from exec/systemx @args = ( qw! -l -e !, q!print for @ARGV!, "1 2" ); } else { # output from exec/systemx, but on 2 lines, wrong output @args = ( qw! -l -e !, q!"print for @ARGV"!, '--',"1 2" ); } warn "$perl @args \n"; warn 'system '; system $perl, @args; { use IPC::System::Simple qw' systemx '; warn 'systemx '; systemx $perl, @args; } warn 'exec '; exec $perl, @args; # bug warn " $! $^E "; __END__
$ perl junk.pl 1 perl -l -e print for @ARGV 1 2 system at junk.pl line 24. 1 2 systemx at junk.pl line 29. exec at junk.pl line 33. $
$ perl junk.pl perl -l -e "print for @ARGV" -- 1 2 system at junk.pl line 24. 1 2 systemx at junk.pl line 29. 1 2 exec at junk.pl line 33. $ 1 2
Huuuh?

In reply to exec always invokes the shell? win32 by Anonymous Monk

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 examining the Monastery: (6)
As of 2024-03-28 21:23 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found