12-10-2010
9 More Discussions You Might Find Interesting
1. UNIX for Advanced & Expert Users
I am trying to install Perl 5.005 on solaris 2.5, following the perl
installation guide in INSTALL file that comes with Perl software
However, according to the installation procedure, it instruct me to to excute "make" command after running the Configure which I did but everytime I excute... (3 Replies)
Discussion started by: hassan2
3 Replies
2. UNIX for Dummies Questions & Answers
Please forgive me if this is the wrong place for this post. I didn't see a good place to post this topic in. :D
I would like to know what's the most popular and reliable Java IDE out there nowadays? A FREE one would be awesome! :D
Thanks for your suggestion!
Cheers! (10 Replies)
Discussion started by: laila63
10 Replies
3. AIX
Hi alls
I don't see any solution and I need to have feedback from other people...
On a test machine (AIX 5.1) I've installed OpenSSH software on it (with openssl, prng, etc...) like is described on IBM AIX Docs. To control the installation I've rebooted the machine and all was ok (CDE was... (15 Replies)
Discussion started by: nymus7
15 Replies
4. Shell Programming and Scripting
Im trying to write a bash script that has an if statment that when the user enters ONLY that exact argument, will echo what follows that conditon.
For example:
for file in $1
do
if
then
Var1=$(cat hello | egrep "that pattern" | awk '{ print $NF }')
cat $Var1
fi
done
Basically,... (3 Replies)
Discussion started by: oxoxo
3 Replies
5. Shell Programming and Scripting
What is the sake of using `use strict;` in perl codes? and how can avoid it?.TnX. (8 Replies)
Discussion started by: Zaxon
8 Replies
6. What is on Your Mind?
A long time ago, my computer crashed, at that time, I was using Windows98, but
because I was a noob at computers, my friend recommended me apro to fix it for me.
He came, saw the computer, and asked if I had a backup/installation disk
for Windows 98. I said no.
He thought about it for a... (1 Reply)
Discussion started by: vistastar
1 Replies
7. Shell Programming and Scripting
I installed gcc4 today using setup.exe from cygwin. However, I cannot run any of my perl program after that. For example,
Run@Run-THINK /home
$ perl Process.pl
Can't locate strict.pm in @INC (@INC contains: /usr/lib/perl5/5.10/i686-cygwin /
usr/lib/perl5/5.10... (0 Replies)
Discussion started by: littledeer
0 Replies
8. UNIX for Advanced & Expert Users
What are the different ways to disable ssh strict checking? I've seen this mentioned a few times but it doesn't seem to be working.
$ ssh -o 'StrictHostKeyChecking no' admin@hostnamehttp://docs.oracle.com/cd/E35328_01/E35336/html/vmcli-ssh.html
Is there a file somewhere in /etc that I could... (4 Replies)
Discussion started by: cokedude
4 Replies
9. Shell Programming and Scripting
How do I get past the error when using strict and GetOpts ?
#!/usr/bin/perl
use strict;
use Getopt::Std;
# Process the command line options
die "Usage: $0 -r <router> -u <username> -p <password> -e <enable password>\n" if (@ARGV < 6);
exit if (!getopts('r:u:p:e:'));
my... (3 Replies)
Discussion started by: popeye
3 Replies
strict(3pm) Perl Programmers Reference Guide strict(3pm)
NAME
strict - Perl pragma to restrict unsafe constructs
SYNOPSIS
use strict;
use strict "vars";
use strict "refs";
use strict "subs";
use strict;
no strict "vars";
DESCRIPTION
If no import list is supplied, all possible restrictions are assumed. (This is the safest mode to operate in, but is sometimes too strict
for casual programming.) Currently, there are three possible things to be strict about: "subs", "vars", and "refs".
"strict refs"
This generates a runtime error if you use symbolic references (see perlref).
use strict 'refs';
$ref = $foo;
print $$ref; # ok
$ref = "foo";
print $$ref; # runtime error; normally ok
$file = "STDOUT";
print $file "Hi!"; # error; note: no comma after $file
There is one exception to this rule:
$bar = &{'foo'};
&$bar;
is allowed so that "goto &$AUTOLOAD" would not break under stricture.
"strict vars"
This generates a compile-time error if you access a variable that wasn't declared via "our" or "use vars", localized via "my()", or
wasn't fully qualified. Because this is to avoid variable suicide problems and subtle dynamic scoping issues, a merely local()
variable isn't good enough. See "my" in perlfunc and "local" in perlfunc.
use strict 'vars';
$X::foo = 1; # ok, fully qualified
my $foo = 10; # ok, my() var
local $foo = 9; # blows up
package Cinna;
our $bar; # Declares $bar in current package
$bar = 'HgS'; # ok, global declared via pragma
The local() generated a compile-time error because you just touched a global name without fully qualifying it.
Because of their special use by sort(), the variables $a and $b are exempted from this check.
"strict subs"
This disables the poetry optimization, generating a compile-time error if you try to use a bareword identifier that's not a
subroutine, unless it is a simple identifier (no colons) and that it appears in curly braces or on the left hand side of the "=>"
symbol.
use strict 'subs';
$SIG{PIPE} = Plumber; # blows up
$SIG{PIPE} = "Plumber"; # just fine: quoted string is always ok
$SIG{PIPE} = &Plumber; # preferred form
See "Pragmatic Modules" in perlmodlib.
HISTORY
"strict 'subs'", with Perl 5.6.1, erroneously permitted to use an unquoted compound identifier (e.g. "Foo::Bar") as a hash key (before "=>"
or inside curlies), but without forcing it always to a literal string.
Starting with Perl 5.8.1 strict is strict about its restrictions: if unknown restrictions are used, the strict pragma will abort with
Unknown 'strict' tag(s) '...'
As of version 1.04 (Perl 5.10), strict verifies that it is used as "strict" to avoid the dreaded Strict trap on case insensitive file
systems.
perl v5.12.1 2010-04-26 strict(3pm)