On 02/17/2014 05:48 AM, Marc Perkel wrote:

Hi,

I just wanted to contribute these 2 scripts to the crond project. they explain themselves. on allows you to run a script up to 2400 times a minute. The other allows you to run a script every X minutes and X can be > 60 and not divisible by 60.

Feel free to include these.

http://wiki.junkemailfilter.com/index.php/How_to_run_a_Linux_script_every_fe...

#! /bin/sh

# Microsecond Cron # Usage: cron-ms start # Copyright 2014 by Marc Perkel # docs at http://wiki.junkemailfilter.com/index.php/How_to_run_a_Linux_script_every_fe..."

# Free to use with attribution

basedir=/etc/cron-ms

if [ $# -eq 0 ] then echo echo "cron-ms by Marc Perkel" echo echo "This program is used to run all programs in a directory in parallel every X times per minute." echo "Think of this program as cron with microseconds resolution." echo echo "Usage: cron-ms start" echo echo "The scheduling is done by creating directories with the number of" echo "executions per minute as part of the directory name." echo echo "Examples:" echo " /etc/cron-ms/7 # Executes everything in that directory 7 times a minute" echo " /etc/cron-ms/30 # Executes everything in that directory 30 times a minute" echo " /etc/cron-ms/600 # Executes everything in that directory 10 times a second" echo " /etc/cron-ms/2400 # Executes everything in that directory 40 times a second" echo exit fi

# If "start" is passed as a parameter then run all the loops in parallel # The number of the directory is the number of executions per minute # Since cron isn't accurate we need to start at top of next minute

if [ $1 = start ] then for dir in $basedir/* ; do $0 ${dir##*/} 60000000 & done exit fi

# Loops per minute and the next interval are passed on the command line with each loop

loops=$1 next_interval=$2

# Sleeps until a specific part of a minute with microsecond resolution. 60000000 is full minute

usleep $(( $next_interval - 10#$(date +%S%N) / 1000 ))

# Run all the programs in the directory in parallel

for program in $basedir/$loops/* ; do if [ -x $program ] then $program &> /dev/null & fi done

# Calculate next_interval

next_interval=$(($next_interval % 60000000 + (60000000 / $loops) ))

# If minute is not up - call self recursively

if [ $next_interval -lt $(( 60000000 / $loops * $loops)) ] then . $0 $loops $next_interval & fi

# Otherwise we're done

##########################

#! /bin/sh

# Minute Cron # Usage: cron-min start # Copyright 2014 by Marc Perkel # docs athttp://wiki.junkemailfilter.com/index.php/How_to_run_a_Linux_script_every_fe..."

# Free to use with attribution

# Run this script under Cron once a minute

basedir=/etc/cron-min

if [ $# -gt 0 ] then echo echo "cron-min by Marc Perkel" echo echo "This program is used to run all programs in a directory in parallel every X minutes." echo echo "Usage: cron-min" echo echo "The scheduling is done by creating directories with the number of minutes as part of the" echo "directory name. The minutes do not have to evenly divide into 60 or be less than 60." echo echo "Examples:" echo " /etc/cron-min/1 # Executes everything in that directory every 1 minute" echo " /etc/cron-min/5 # Executes everything in that directory every 5 minutes" echo " /etc/cron-min/13 # Executes everything in that directory every 13 minutes" echo " /etc/cron-min/75 # Executes everything in that directory every 75 minutes" echo exit fi

for dir in $basedir/* ; do minutes=${dir##*/} if [ $(( ($(date +%s) / 60) % $minutes )) -eq 0 ] then for program in $basedir/$minutes/* ; do if [ -x $program ] then $program &> /dev/null & fi done fi done

Hi Marc, according to Fedora conventions it should go into doc. Interested users can easily change it. If other members of cronie list agree, I can add it into next release.

Marcela