I just started shell coding and I'm a bit confused on how 'mv' works can someone explain to me how it works and if i did this correctly. Thanks.
echo "Enter Name of the first file:"
read file1
#echo $file1
if ; then
echo "Sorry, file does not exist."
exit 1
... (16 Replies)
# sub: find block (in cols), return line-numbers (begin-end) or 0 if notfound
sub findb{
my ($exp1,$col1,$exp2,$col2)= @_; # $exp = expression to find, $col - column to search in
my $cnt=0;
my ($val1,$val2);
my ($beg,$end);
for($cnt=1;$cnt<=65536;$cnt++){
$val1 =... (3 Replies)
Hi Gurus:
I am trying to understand the following line of code.I did enough of googling to understand but no luck.Please help me understand the follow chunk of code:
X=$0
MOD=${X%/*}/env.ksh
X is the current script from which I am trying to execute.
Say if X=test.ksh
$MOD is echoing :... (3 Replies)
Hi
I have a questions related 2 commands : 'du' and 'ls'.
Why is the difference between output of 'du' and 'ls' cmd's ?
Command 'du' :
------------------
jakubn@server1 /home/jakubn $ du -s *
4 engine.ksh
1331 scripts
'du -s *' ---> shows block count size on disk (512 Bytes... (5 Replies)
Hi all
I stuck with a problem. I want to understand the execution of the below code. Can any one please help me
`sqlplus username/passwd@DB << EOF
set serveroutput on
declare
begin
sql_query;
end;
/
commit
/
quit
EOF`
My ques is why do we use EOF and how does it help. (4 Replies)
Hi,
Please help me to understand the bold segments in the below regex.
Both are of same type whose meaning I am looking for.
find . \( -iregex './\{6,10\}./src' \) -type d -maxdepth 2
Output:
./20111210.0/src
In continuation to above:
sed -e 's|./\(*.\{1,3\}\).*|\1|g'
Output: ... (4 Replies)
Hi Guys,
I am new to scripting , I am trying to rebuild a script based on an old script. Can someone help me figure out what the script is doing? This is only a part of the script.
I am looking to interpret these two points in the scripts:-
1)
test=`echo $?`
while
I do not... (3 Replies)
Hi, I saw the following explanation about alias in bash from gnu website, but I didn't get the meaning:
Bash always reads at least one complete line of input before executing any of the commands on that line.
Aliases are expanded when a command is read, not when it is executed. Therefore, an... (3 Replies)
I tried to use lseek system call to determine the number of bytes in a file. To do so, I used open system call with O_APPEND flag to open a file. As lseek returns the current offset so I called lseek for opened file with offset as zero and whence as SEEK_CUR. So I guess it must return the number of... (3 Replies)
Discussion started by: Deepak Raj
3 Replies
LEARN ABOUT DEBIAN
imager::qrcode
Imager::QRCode(3pm) User Contributed Perl Documentation Imager::QRCode(3pm)NAME
Imager::QRCode - Generate QR Code with Imager using libqrencode
SYNOPSIS
use Imager::QRCode;
my $qrcode = Imager::QRCode->new(
size => 2,
margin => 2,
version => 1,
level => 'M',
casesensitive => 1,
lightcolor => Imager::Color->new(255, 255, 255),
darkcolor => Imager::Color->new(0, 0, 0),
);
my $img = $qrcode->plot("blah blah");
$img->write(file => "qrcode.gif");
# or instance method
use Imager::QRCode qw(plot_qrcode);
my $img = plot_qrcode("blah blah", \%params);
$img->write(file => "qrcode.gif");
DESCRIPTION
This module allows you to generate QR Code with Imager. This module use libqrencode '2.0.0' and above.
METHODS
new
$qrcode = Imager::QRCode->new(%params);
The "new()" constructor method instantiates a new Imager::QRCode object. "new()" accepts the following parameters.
o "size" - Horizontal and vertical size of module(dot). Default is 4.
o "margin" - Margin size of QR Code. Default is 3.
o "level" - Error collectin level. Valid values are 'M', 'L', 'Q' or 'H'. Default is 'L'.
o "version" - Version of the symbol. If specify '0', this module chooses the minimum version for the input data. Default is '0'.
o "mode" - Encoding mode. Valid values are 'numerical', 'alpha-numerical', '8-bit' or 'kanji'. Default is '8-bit'.
If not give "casesensitive" then should be given "mode". If 'kanji' is given, characters will be encoded as Shift-JIS characters.
If '8-bit' is given, all of non-alpha-numerical characters will be encoded as is. If you want to embed UTF-8 string, choose
'8-bit'.
o "casesensitive" - If your application is case-sensitive using 8-bit characters, set to '1'. Default is '0'.
plot($text)
$img = $qrcode->plot("blah blah");
Create a new QR Code image. This method returns Imager object ploted QR Code with the given text.
INSTANT METHODS
plot_qrcode($text, \%params)
Instant method. $text is input text. %params is same parameter as "new()".
SEE ALSO
"Imager", "http://www.qrcode.com/", "http://megaui.net/fukuchi/works/qrencode/index.en.html"
AUTHOR
Yoshiki KURIHARA "<kurihara __at__ cpan.org>"
THANKS
Tokuhiro Matsuno
LICENCE AND COPYRIGHT
Copyright (c) 2011, Yoshiki KURIHARA "<kurihara __at__ cpan.org>".
This module is free software; you can redistribute it and/or modify it under the same terms as Perl itself. See perlartistic.
perl v5.14.2 2012-12-16 Imager::QRCode(3pm)