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Full Discussion: Listen sharp time to run a command inside a script
Top Forums Shell Programming and Scripting Listen sharp time to run a command inside a script Post 303001556 by apmcd47 on Monday 7th of August 2017 09:56:20 AM
Old 08-07-2017
Quote:
Originally Posted by baris35
Hello,
Just wondered if there is any possibility to run a command at sharp time inside a script in linux. My question is not about crontab

Example:

Code:
#!/bin/bash

cd /home/database

for i in *
do
command 1
if time is 19:00, day is Monday then run command2
if time is 20:00, day is Tuesday, then run command3
if time is 22:00, day is Friday, then run command4
if time is 00:00, day is Thursday, then run command5
done

sleep 2
exit 0


many thanks
Boris
I'm not sure what you mean by "sharp time" but does this help?
Code:
#!/bin/bash

cd /home/database

for i in *
do
   command 1
   case $(printf "%(%H:M_%u)T" -2) in
       19:00_1) command2 ;;
       20:00_2) command3 ;;
       22:00_5) command4 ;;
       00:00_4) command5 ;;
   esac
done

sleep 2
exit 0

The -2 argument to printf tells bash to substitute the time the shell (in this case the script) was invoked. You need bash 4.2 or later for this I believe.

Andrew
These 2 Users Gave Thanks to apmcd47 For This Post:
baris35 rbatte1
 

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LEARN ABOUT OSF1

timedsetup

timedsetup(8)						      System Manager's Manual						     timedsetup(8)

NAME

       timedsetup - Performs initial setup of the time server daemon (timed).

SYNOPSIS

       /usr/sbin/timedsetup

DESCRIPTION

       The timedsetup command is an interactive script that can be used to perform initial time service configuration for your system.

       By  default,  timed  does  not start at boot time.  The timedsetup script asks if you want the timed daemon to be started at boot time, and
       prompts you for any options to pass to the timed daemon whenever it is invoked.	The script then starts the timed daemon.

       For more information on the timed options, see the timed(8) reference page.

									  Note

       The timed daemon is provided for compatibility.	Tru64 UNIX also provides support for the Network Time Protocol	(NTP)  through	the  xntpd
       daemon.	 Compaq  recommends  you use NTP for time synchronization.  If your system is configured to run NTP, the timedsetup command passes
       the -E and -M options to the timed daemon by default.

       If you plan to run both the timed daemon and NTP, you should configure NTP first.

RESTRICTIONS

       In configurations with two or more hosts each connected to the same two or more subnetworks, only one of the host can run  the  timed  with
       the -M option.

FILES

       Specifies the command pathname The timed startup and shutdown script Specifies timed parameters pertinent to a specific system

SEE ALSO

       Commands: timed(8), xntpd(8)

																     timedsetup(8)
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