Those two are more concise, and accomplish the same thing ( return the seconds since the epoch 00:00:00 Jan 1, 1970 GMT, not counting leap seconds ).
The date command is GNU date 7.2 on Linux. Use Perl, if you are worried about portability of /bin/date
Here is a simple example of a perl script to do what you want:
Code:
my $begin_time = time;
my $offset = 10; # number of seconds
do {
print "foo\n";
sleep 1;
} while ( time < ($begin_time + $offset) );
this grabs the current epoch time and then executes the code in the do() block ( in this case, prints "foo" once every second ). It keeps doing this for 10 seconds total.
What you need to do is put the start time in as a field in your crontab which runs this job, and then calculate the offset in seconds from that time.
In the example you gave this is 60 seconds * 60 minutes * 15 hrs, or 54,000 seconds. that is what you should set $offset to.
I would actually set it, not "54,000" but the equation, as it helps you to see what is going on:
Code:
my $offsest = 60 * 60 * 15; # easier to understand this is 15 hours
Hope that Helps
Last edited by deindorfer; 04-27-2010 at 05:54 PM..
Okay I have this script file that runs from cron and most the time it works just find. Except every so often one of the three ssh commands I have in it just doesn't know it's done and that of course causes the whole thing to hang!
The ssh command has executed. I can tell this because the command... (1 Reply)
Hi All,
I am having a script, which run fine. But what I want to do is that the script should run for specified time and terminate then ( say for a minute).
Can somebody help me for this. I would be greatful.
Thanks,
Aru (8 Replies)
Hi all,
I am trying to end a Menu script. Can people suggest various methods please?
At the moment I am doing:
quit=n
while
do
...Code
Code
Code...
read userinput
case $userinput in
q|Q) quit=y;;
esac
done
But this doesn't seem to work every time, occasionally it will work,... (6 Replies)
Hi I have files that end with .txt.txt that i want to delete. But I also have files that end with .txt that I want to leave intact. How do I specifically delete files that end with .txt.txt in a folder.
thanks (5 Replies)
i want to make a script for grep any lines with key word and every time (5 min)
Ex. Log in Server.
.
.
.
03-01-2012 03:07:54,924 - INFO MessageUtil - Return | Status=0 | TxID=12010300000548755292 | Message=Success
03-01-2012 03:09:13,789 - INFO MessageUtil - Return | Status=0 |... (6 Replies)
Hello All,
I have written a script which which is working fine to a certain logic of it. But i want a part of the script to run two commands at 00:10 hrs every day. These two command are
1. rm -rf /path/to/folder
2. mail the content of a file.
How do i achieve this. Thanks.
... (4 Replies)
Hi,
I am quit satisfied with this scrtipt and really don't want to change anything but the end. I get a repetitve option when I want to "quit"
and don't know why. What am I missing? When I press q to quit
with this script, I get an EXTRA "Enter " How do I correct this so that when I
press... (1 Reply)
Hi
This is my first post and I'm just a beginner. So please be nice to me.
I have a couple of html files where a pattern beginning with "http://www.site.com" and ending with "/resource.dat" is present on every 241st line. How do I extract this to a new text file?
I have tried sed -n 241,241p... (13 Replies)
Hello beautiful people, I would like to kindly ask you to help me with my school leaving project. Unfortunatelly due to family problems I felt into trouble and I am on able to finish my project due to schedule.
I would like to ask you to review this script and give me any hints that you could.... (2 Replies)
Hi,
I have to add 7 bases of specific nucleotide at the beginning and ending of all the fasta sequences of a file. For example, I have a multi fasta file namely test.fasta as given below
test.fasta
>TalAA18_Xoo_CIAT_NZ_CP033194.1:_2936369-2939570:+1... (1 Reply)
Discussion started by: dineshkumarsrk
1 Replies
LEARN ABOUT DEBIAN
dh_installinit
DH_INSTALLINIT(1) Debhelper DH_INSTALLINIT(1)NAME
dh_installinit - install init scripts and/or upstart jobs into package build directories
SYNOPSIS
dh_installinit [debhelperoptions] [--name=name] [-n] [-R] [-r] [-d] [--params]
DESCRIPTION
dh_installinit is a debhelper program that is responsible for installing init scripts with associated defaults files, as well as upstart
job files into package build directories.
It also automatically generates the postinst and postrm and prerm commands needed to set up the symlinks in /etc/rc*.d/ to start and stop
the init scripts.
FILES
debian/package.init
If this exists, it is installed into etc/init.d/package in the package build directory.
debian/package.default
If this exists, it is installed into etc/default/package in the package build directory.
debian/package.upstart
If this exists, it is installed into etc/init/package.conf in the package build directory.
OPTIONS -n, --noscripts
Do not modify postinst/postrm/prerm scripts.
-o, --onlyscripts
Only modify postinst/postrm/prerm scripts, do not actually install any init script, default files, or upstart job. May be useful if the
init script or upstart job is shipped and/or installed by upstream in a way that doesn't make it easy to let dh_installinit find it.
-R, --restart-after-upgrade
Do not stop the init script until after the package upgrade has been completed. This is different than the default behavior, which
stops the script in the prerm, and starts it again in the postinst.
This can be useful for daemons that should not have a possibly long downtime during upgrade. But you should make sure that the daemon
will not get confused by the package being upgraded while it's running before using this option.
-r, --no-restart-on-upgrade
Do not stop init script on upgrade.
--no-start
Do not start the init script on install or upgrade, or stop it on removal. Only call update-rc.d. Useful for rcS scripts.
-d, --remove-d
Remove trailing d from the name of the package, and use the result for the filename the upstart job file is installed as in etc/init/ ,
and for the filename the init script is installed as in etc/init.d and the default file is installed as in etc/default/ . This may be
useful for daemons with names ending in d. (Note: this takes precedence over the --init-script parameter described below.)
-uparams --update-rcd-params=params
-- params
Pass params to update-rc.d(8). If not specified, defaults will be passed to update-rc.d(8).
--name=name
Install the init script (and default file) as well as upstart job file using the filename name instead of the default filename, which
is the package name. When this parameter is used, dh_installinit looks for and installs files named debian/package.name.init,
debian/package.name.default and debian/package.name.upstart instead of the usual debian/package.init, debian/package.default and
debian/package.upstart.
--init-script=scriptname
Use scriptname as the filename the init script is installed as in etc/init.d/ (and also use it as the filename for the defaults file,
if it is installed). If you use this parameter, dh_installinit will look to see if a file in the debian/ directory exists that looks
like package.scriptname and if so will install it as the init script in preference to the files it normally installs.
This parameter is deprecated, use the --name parameter instead. This parameter is incompatible with the use of upstart jobs.
--error-handler=function
Call the named shell function if running the init script fails. The function should be provided in the prerm and postinst scripts,
before the #DEBHELPER# token.
NOTES
Note that this command is not idempotent. dh_prep(1) should be called between invocations of this command. Otherwise, it may cause multiple
instances of the same text to be added to maintainer scripts.
SEE ALSO debhelper(7)
This program is a part of debhelper.
AUTHORS
Joey Hess <joeyh@debian.org>
Steve Langasek <steve.langasek@canonical.com>
9.20120909 2012-04-10 DH_INSTALLINIT(1)