Subj : Odd-day script
To   : Nigel Reed
From : Sean Dennis
Date : Sun Apr 09 2023 21:00:15

-=> Nigel Reed wrote to All <=-

 NR> Easily mitigated. Just run a cronjob each month to call a script
 NR> that'll check an incremental file. When it reaches 10 complete the
 NR> script and reset to 1 otherwise increment.

I cribbed this script together with help to run every three days when 
NOAA updates their space weather forecast.  The daily cron job runs this at
0900 ET:

===
#!/bin/bash

# The following is from:
# 
https://askubuntu.com/questions/829408/execute-bash-script-literally-after-ever
y-3-days
# This is to account for actually running every three days
# correctly since cron can't do it.

# Minimum delay between two script executions, in seconds. 
seconds=$((60*60*24*3))

# Compare the difference between this script's modification time stamp 
# and the current date with the given minimum delay in seconds. 
# Exit with error code 1 if the minimum delay is not exceeded yet.
if test "$(($(date "+%s")-$(date -r "$0" "+%s")))" -lt "$seconds" ; then
    echo "This script may not yet be started again."
    exit 1
fi

# Store the current date as modification time stamp of this script file
touch -m -- "$0"

# Insert your normal script here:
MBSE_ROOT=/opt/mbse;export MBSE_ROOT
cd $MBSE_ROOT/temp
lynx -dump "https://services.swpc.noaa.gov/text/3-day-forecast.txt" > forecast
$MBSE_ROOT/bin/mbmsg post All 155 "3-Day Space Weather Forecast" ./forecast - 
-quiet
### Kill off the text file
rm -f ./forecast
===

I haven't tried using this script under sh yet.

This might be helpful.

-- Sean

.... Inside every large problem is a small problem trying to get out.
--- MMail/FreeBSD
 * Origin: Outpost BBS * Johnson City, TN (1:18/200)

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