I have a for loop that I use to extract integer values in a shell script (ksh). Now, I would like to add the values. My preference, from my c programming days, would be to do something like the commented out line below in the for loop. However, this is not recognised. So I use the line shown (TOTALWORK=$TOTALWORK+$WORKDONE) but this is concatenating the values (See output below).
The output is:
So i guess I am not adding but concatenating the values. So the varables must be getting treated as strings rather than integer values? I don't immediately see what I have done wrong here? Any advice gratefully received.
I have a structure which contains n number of elements. For example:
stFruits : apple, grapes, strawberry, pear, kiwi, melon, papaya, mango, orange, sweetlime ..... etc
Now i have to write a for loop as follows:
int i;
int j;
j=stFruits.apple+stFruits.grapes+stFruits.pear+.... and so... (3 Replies)
Hello everybody,
I am having problem in converting byte array variables to Hexa String variables for Linux. I have done, converting byte array variables to Hexa String variables for Windows but same function doesn't work for linux. Is there any difference in OS ? The code for Windows is given... (2 Replies)
Hi
I am trying to add variables(float values) in a unix script but am getting an error
value=`expr $a + $b + $c`
The error I am getting is "expr: non-numeric argument"
I guess it has got to something with the decimal points.
Plz help (13 Replies)
I need some help with adding lines to file and substitute a pattern.
Ok I have a file:
#cat names.txt
name: John Doe
stationed: 1
name: Michael Sweets
stationed: 41
.
.
.
And would like to change it to:
name: John Doe
employed
permanently
stationed: 1-office (7 Replies)
I have 3 variables with different information.. they look like this (row-wise aswell):
Variable1 =
Roland
Kalle
Dalius
Variable2 =
ake123
ler321
kaf434
Variable3 =
Richardsen
Sworden
Lokthar
How can I sort them by variable3 alphabetical and add them into the same output so... (0 Replies)
Hello,
I want to add a letter to the end of a string if it repeats in a column.
so if I have a file like this:
DOG001
DOG0023
DOG004
DOG001
DOG0023
DOG001
the output should look like this:
DOG001-a
DOG0023-a
DOG004
DOG001-b (15 Replies)
Hi All,
i have a requirement where i have to run a script with at least 25 arguements and position of arguements can also change. the unapropriate way is like below. can we achieve this in more good and precise way??
#!/bin/ksh
##script is sample.ksh
age=$1
gender=$2
class=$3
.
.
.... (3 Replies)
So, I have this command:
mkdir rolled
for %%x in (*gif) do convert %%x -roll +2+6 %%x|move %%x rolled
I'd like to have the +2 and +6 accumulate here.
In each new gif tackled, it should increase by the amount: +2 (for x) and +6 (for y)
Is this possible?
I'm on Windows, DOS. (0 Replies)
I have an array in an external file, "array.txt", which contains:
char *testarray={"Zero", "One", "Two", "Three", "Four", "Five", "Six", "Seven", "Eight", "Nine"};I want to be able to add an element to this array, and have that element display, whenever I call it, without having to recompile... (29 Replies)
Discussion started by: ignatius
29 Replies
LEARN ABOUT DEBIAN
io::async::timer::absolute
IO::Async::Timer::Absolute(3pm) User Contributed Perl Documentation IO::Async::Timer::Absolute(3pm)NAME
"IO::Async::Timer::Absolute" - event callback at a fixed future time
SYNOPSIS
use IO::Async::Timer::Absolute;
use POSIX qw( mktime );
use IO::Async::Loop;
my $loop = IO::Async::Loop->new;
my @time = gmtime;
my $timer = IO::Async::Timer::Absolute->new(
time => mktime( 0, 0, 0, $time[4]+1, $time[5], $time[6] ),
on_expire => sub {
print "It's midnight
";
$loop->stop;
},
);
$loop->add( $timer );
$loop->run;
DESCRIPTION
This subclass of IO::Async::Timer implements one-shot events at a fixed time in the future. The object waits for a given timestamp, and
invokes its callback at that point in the future.
For a "Timer" object that waits for a delay relative to the time it is started, see instead IO::Async::Timer::Countdown.
EVENTS
The following events are invoked, either using subclass methods or CODE references in parameters:
on_expire
Invoked when the timer expires.
PARAMETERS
The following named parameters may be passed to "new" or "configure":
on_expire => CODE
CODE reference for the "on_expire" event.
time => NUM
The epoch time at which the timer will expire.
Once constructed, the timer object will need to be added to the "Loop" before it will work.
Unlike other timers, it does not make sense to "start" this object, because its expiry time is absolute, and not relative to the time it is
started.
AUTHOR
Paul Evans <leonerd@leonerd.org.uk>
perl v5.14.2 2012-10-24 IO::Async::Timer::Absolute(3pm)