Perl Scripting


 
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# 1  
Old 03-16-2006
Question Perl Scripting

Hi,
I want to use the mailx command or sendmail command in perl script.
I am trying this one and getting error:

system "mailx -s \"Test mail\" $ar1";

Error:

The flags you gave are used only when sending mail.
# 2  
Old 03-16-2006
Vaibhav,

Try this instead:

open (MAIL,"|mailx -s <subject> <email addresses>");
print MAIL "Mail line 1\n";
print MAIL "Mail line 2\n";
...
close (MAIL);

Greg
# 3  
Old 03-16-2006
You could use the pipe open() of Perl as showed by Greg.
(see perldoc perlopentut, perldoc perlipc)
However, if you cannot trust the caller's input I would either
do a forking open with untainting in the child's block,
or rather use modules like Mail::Send or Mail::Mailer etc.
http://search.cpan.org/~markov/MailT...4/Mail/Send.pm
# 4  
Old 03-20-2006
MySQL

Hi Greg 10X,
your advice worked regarding the perl script. Smilie
# 5  
Old 05-08-2006
Question Perl problem

Hi All,


How can i use "echo" command in perl?

Let suppose i set one variable $usr_info = abc /def/ghi/abc

now want get the out put /def/ghi/abc in variable my_path using command like this

$my_path = `echo $usr_info | cut -f2 -d" "`

but i am getting error related to "|" "pipe" when i run the script.
# 6  
Old 05-08-2006
Can't reproduce.

Maybe post the relevant lines and the exact output (inc. error message)?
# 7  
Old 05-08-2006
You are obviously mixing shell and Perl variables here.
Generally you should avoid this mixture because Perl is powerful enough
to get rid of all shell escapes, and Perl has built-ins of almost all Unix syscalls
which render them completely redundant.
Not only degrades this the performance of your Perl program
(though this is seldom an issue for the quick and dirty hack),
but it also makes your programs more insecure,
which indeed is relevant for e.g. CGIs or server programs.
(n.b. if you can afford the time you should read perldoc perlsec )

But if you are reluctant to rewrite your shell script wrapper into your Perl code
then you could either pass shell variables to the called Perl script
e.g.
Code:
$ (user_info="abc /def/ghi/abc"; perl -le '$my_path=$ARGV[1];print $my_path' $user_info)
/def/ghi/abc

or you could access the shell variables via the %ENV hash,
provided you export them in your shell wrapper script
e.g.
Code:
$ (user_info="abc /def/ghi/abc" perl -le '$my_path=$ENV{user_info};print $my_path' $user_info)
abc /def/ghi/abc

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