Hi everybody, i want to make an argument at echo command that takes a alpharithmetic and returns it reversed. How this can be done? plus what makefile changes are needed (0 Replies)
In the make file
update updateq:
-------------------
----------
i want the makefile to display some messages when user gives "make update", but totally quite wehn user enters "make updateq". Can u tell me how to read these argument in makefile.
$1 doesnt work:( (3 Replies)
hi,
i have a script that runs on bash and would like to run it on a machine that has csh and bash. the default setting on that machine is csh. i dont want to change my code to run it with a csh shell. is there any way i can run the script (written in bash) on this machine? in other words is there... (3 Replies)
I have no idea what the following means. The teacher is too advanced for me to understand fully. We literally went from running a few commands over the last few months to starting shell scripting. I am not a programmer, I am more hardware oriented. I wish I knew what this question was asking... (3 Replies)
This is what I have:
#!/bin/bash
#ascript.sh
WORD1=`tail -n +$1 /home/gscn/word1.txt | head -1`
sed -e "s/WORD1/$WORD1/g" < /home/gscn/configtmp > /home/gscn/config
WORD2=`tail -n +$1 /home/gscn/word2.txt | head -1`
sed -e "s/WORD2/$WORD2/g" < /home/gscn/config2tmp >... (4 Replies)
The following bash script does not work because the java/groovy code always thinks there are four arguments even if there are only 1 or 2. As you can see from my hideous backslashes, I am using cygwin bash on windows.
export... (1 Reply)
Here is my script:
#!/bin/ksh
usage ()
{
echo " Usage: $0 <opt1> <opt2> <opt3> <opt4>"
}
if ; then
usage
exit;
fi
prog -a $1 -b $2 -c $3 -d $4 2>&1 | tee -a ~/$1.log
I want argument 4 to be optional, so if there's no argument for opt4, that it doesn't... (8 Replies)
Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!
1. The problem statement, all variables and given/known data:
1) The script is executed in the Korn shell.
2) Name the shell script file is asg6s.
3) The asg6s file is... (7 Replies)
Discussion started by: ProgMan2015
7 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)