evaluating success of command run with backticks

[Ravi Parimi]

Hi,
Is there a way to know if a command executed via backticks was
successful or not?

my $res = `shell_command`;

What would I have to check to obtain this information? Would it be one of
$? variables? Any pointers to perldocs will be helpful.

Thanks a lot,
--ravi

 

[James Willmore]

Hi,
Is there a way to know if a command executed via backticks was
successful or not?

my $res = `shell_command`;

What would I have to check to obtain this information? Would it be one of
$? variables? Any pointers to perldocs will be helpful.

Thanks a lot,
--ravi

(long link to recently asked question that may answer your question)

http://groups.google.com/groups?hl=...lr=&ie=UTF-8&oe=utf-8&scoring=d&start=30&sa=N

--
Jim

Copyright notice: all code written by the author in this post is
released under the GPL. http://www.gnu.org/licenses/gpl.txt
for more information.

a fortune quote ...
Mickey Mouse wears a Spiro Agnew watch.

 

[Ben Morrow]

Is there a way to know if a command executed via backticks was
successful or not?

my $res = `shell_command`;

What would I have to check to obtain this information? Would it be one of
$? variables?

^^
You have answered your own question

Any pointers to perldocs will be helpful.

perldoc perlvar

Ben

 

[Paul Lalli]

Hi,
Is there a way to know if a command executed via backticks was
successful or not?

my $res = `shell_command`;

What would I have to check to obtain this information? Would it be one of
$? variables? Any pointers to perldocs will be helpful.

Thanks a lot,
--ravi

perldoc perlvar
look up $? just as you thought. It contains the status of any program
started with system(), backticks, wait(), waitpid(), or pipes.


Paul Lalli

 

[Peter Sundstrom]

Hi,
Is there a way to know if a command executed via backticks was
successful or not?

my $res = `shell_command`;

What would I have to check to obtain this information? Would it be one of
$? variables? Any pointers to perldocs will be helpful.

Congratulations!!!

You've earned an entry in the Perl SAQ.

http://www.ginini.com/perlsaq.html

 

[gnari]

Congratulations!!!

You've earned an entry in the Perl SAQ.

http://www.ginini.com/perlsaq.html

is it not just a repeat of entry 2 ?

gnari

 

[Mark Jason Dominus]

(long link to recently asked question that may answer your question)

http://groups.google.com/groups?hl=...lr=&ie=UTF-8&oe=utf-8&scoring=d&start=30&sa=N

In these Google URLs, there is a lot of extraneous information that
you don't need to pass along. For example, the 'hl=en' tells Google
that you want to use the English interface. There's no need to
include this in your news article. Usually you only need the
'threadm' or 'selm' component, as:

http://groups.google.com/[email protected]

Voila.

 

[James Willmore]

In these Google URLs, there is a lot of extraneous information that
you don't need to pass along. For example, the 'hl=en' tells Google
that you want to use the English interface. There's no need to
include this in your news article. Usually you only need the
'threadm' or 'selm' component, as:

http://groups.google.com/[email protected]

Voila.

Thanks.

--
Jim

Copyright notice: all code written by the author in this post is
released under the GPL. http://www.gnu.org/licenses/gpl.txt
for more information.

a fortune quote ...
Very few profundities can be expressed in less than 80
characters.

 

[Peter Sundstrom]

is it not just a repeat of entry 2 ?

Certainly there's a few repeats, but asked in different ways.

Perhaps I could start a FASAQ!