Hello,
So i have this file called /apps/turnout which looks like that of the contents of the /etc/shadow (but not exactly)
the file has a long list in it. basically, the contents of this file looks something similar to the following:
jajajajalala:D#$#AFVAdfda
lalabavisof:#%R@fafla#$... (3 Replies)
Hi there
We have boxes named server-sybase2, server-oracle1, etc etc
Does any body know how I can construct an if statement to say, if the hostname of the box contains the string "sybase" then do X ie
if
then
X
fi
any help would be greatly appreciated (6 Replies)
It saves me lot of typing and space/lines when I do not use full 'if' keyword and construct, instead use ..
&& <statement> || <statement>
that perfectly replaces..
if ; then
<statement>
else
<statement>
fi
Can I use following syntax when I want to add multiple statements under 'if'... (4 Replies)
I have following requirement.
Say, my text file contains following patterns
{2010501005|XXGpvertex|9|0|17|0|{|{30100001|XXparameter_set|@@@@{{30001002|XXparameter|!prototype_path|$AB_COMPONENTS/Sort/Sort.mpc|3|2|Pf$|@{0|}}
}}@0|@315000|78500|335000|99000|114000|87000|17|And the Sort|Ab... (8 Replies)
Hi All,
I am writing a perl script where I take 2 variables from the user as STDIN to scan the lines of a file to produce as output.
How can I do an IF loop to test this for example in the mock file
12 10
35 20
37 5
45 12if I take user input as 40 and 10, how can I get the output lines in... (3 Replies)
Hi,
I have a file look likes this :
--->start hir
Trace file: pudwh_ora_9998.trc
Sort options: fchela exeela
***************************************************************count = number of times OCI procedure was executed
cpu = cpu time in seconds executing
elapsed = elapsed... (3 Replies)
Hi everybody,
I'm sorry If I ask a silly question. I have a simple code like this
I have the following error:
Can anyone explain for me why I have this error, and how can I correct it?
Thanks in advance. (12 Replies)
Hi the below perl snippet will replace any three letter string in the beginning with a two letter string which is specified..but if i want to modfiy only certain characters for eg..
ABC - AB
CAB - AB
AAA - No Modifcations
1AB - AB
AB8 - AB
Whatever coming before or after of AB only have... (2 Replies)
Hi,
I need some guidance with understanding this Perl script below. I am not the author of the script and the author has not leave any documentation. I supposed it is meant to be 'easy' if you're a Perl or regex guru. I am having problem understanding what regex to use :confused: The script does... (3 Replies)
Discussion started by: newbie_01
3 Replies
LEARN ABOUT MOJAVE
integer
integer(3pm) Perl Programmers Reference Guide integer(3pm)NAME
integer - Perl pragma to use integer arithmetic instead of floating point
SYNOPSIS
use integer;
$x = 10/3;
# $x is now 3, not 3.33333333333333333
DESCRIPTION
This tells the compiler to use integer operations from here to the end of the enclosing BLOCK. On many machines, this doesn't matter a
great deal for most computations, but on those without floating point hardware, it can make a big difference in performance.
Note that this only affects how most of the arithmetic and relational operators handle their operands and results, and not how all numbers
everywhere are treated. Specifically, "use integer;" has the effect that before computing the results of the arithmetic operators (+, -,
*, /, %, +=, -=, *=, /=, %=, and unary minus), the comparison operators (<, <=, >, >=, ==, !=, <=>), and the bitwise operators (|, &, ^,
<<, >>, |=, &=, ^=, <<=, >>=), the operands have their fractional portions truncated (or floored), and the result will have its fractional
portion truncated as well. In addition, the range of operands and results is restricted to that of familiar two's complement integers,
i.e., -(2**31) .. (2**31-1) on 32-bit architectures, and -(2**63) .. (2**63-1) on 64-bit architectures. For example, this code
use integer;
$x = 5.8;
$y = 2.5;
$z = 2.7;
$a = 2**31 - 1; # Largest positive integer on 32-bit machines
$, = ", ";
print $x, -$x, $x + $y, $x - $y, $x / $y, $x * $y, $y == $z, $a, $a + 1;
will print: 5.8, -5, 7, 3, 2, 10, 1, 2147483647, -2147483648
Note that $x is still printed as having its true non-integer value of 5.8 since it wasn't operated on. And note too the wrap-around from
the largest positive integer to the largest negative one. Also, arguments passed to functions and the values returned by them are not
affected by "use integer;". E.g.,
srand(1.5);
$, = ", ";
print sin(.5), cos(.5), atan2(1,2), sqrt(2), rand(10);
will give the same result with or without "use integer;" The power operator "**" is also not affected, so that 2 ** .5 is always the
square root of 2. Now, it so happens that the pre- and post- increment and decrement operators, ++ and --, are not affected by "use
integer;" either. Some may rightly consider this to be a bug -- but at least it's a long-standing one.
Finally, "use integer;" also has an additional affect on the bitwise operators. Normally, the operands and results are treated as unsigned
integers, but with "use integer;" the operands and results are signed. This means, among other things, that ~0 is -1, and -2 & -5 is -6.
Internally, native integer arithmetic (as provided by your C compiler) is used. This means that Perl's own semantics for arithmetic
operations may not be preserved. One common source of trouble is the modulus of negative numbers, which Perl does one way, but your
hardware may do another.
% perl -le 'print (4 % -3)'
-2
% perl -Minteger -le 'print (4 % -3)'
1
See "Pragmatic Modules" in perlmodlib, "Integer Arithmetic" in perlop
perl v5.18.2 2014-01-06 integer(3pm)