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Top Forums Shell Programming and Scripting Script that will look the same as Cron Post 303037674 by drysdalk on Friday 9th of August 2019 09:51:29 AM
Old 08-09-2019
Hi,

Using the approach from my script, you would just tweak the runtime variable accordingly. For instance, in the provided example:

Code:
runtime=`/usr/bin/date -d '2019-08-09 14:22:00' +%s`

the target time is very specifically 14:22:00 on the 9th of August 2019. If you wanted, for instance, to make your code run on 25th December 2020 at midnight, you'd just change this to:

Code:
runtime=`/usr/bin/date -d '2020-12-25 00:00:00' +%s`

and you'd be all set.

--- Post updated at 03:51 PM ---

Hi,

Alternatively, if you wanted a more generic and less specific solution - e.g. a "run this at 14:50 every Friday" kind of situation, without worrying about an actual specific date in the year or specific second - you could do something along these lines:

Code:
#!/bin/bash

runday="Fri"
runhour="14"
runminute="50"

while true
do
        nowday=`/usr/bin/date +%a`
        nowhour=`/usr/bin/date +%H`
        nowminute=`/usr/bin/date +%M`

        if [ "$runday" == "$nowday" ] && [ "$runhour" == "$nowhour" ] && [ "$runminute" == "$nowminute" ]
        then
                date
                echo "It's time to run"
                exit 0
        else
                date
                echo "It's not time to run, I'll keep waiting"
        fi

        /usr/bin/sleep 60
done

This User Gave Thanks to drysdalk For This Post:
 

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GZEXE(1)						      General Commands Manual							  GZEXE(1)

NAME
gzexe - compress executable files in place SYNOPSIS
gzexe name ... DESCRIPTION
The gzexe utility allows you to compress executables in place and have them automatically uncompress and execute when you run them (at a penalty in performance). For example if you execute ``gzexe /usr/bin/gdb'' it will create the following two files: -rwxr-xr-x 1 root root 1026675 Jun 7 13:53 /usr/bin/gdb -rwxr-xr-x 1 root root 2304524 May 30 13:02 /usr/bin/gdb~ /usr/bin/gdb~ is the original file and /usr/bin/gdb is the self-uncompressing executable file. You can remove /usr/bin/gdb~ once you are sure that /usr/bin/gdb works properly. This utility is most useful on systems with very small disks. OPTIONS
-d Decompress the given executables instead of compressing them. SEE ALSO
gzip(1), znew(1), zmore(1), zcmp(1), zforce(1) CAVEATS
The compressed executable is a shell script. This may create some security holes. In particular, the compressed executable relies on the PATH environment variable to find gzip and some standard utilities (basename, chmod, ln, mkdir, mktemp, rm, sleep, and tail). BUGS
gzexe attempts to retain the original file attributes on the compressed executable, but you may have to fix them manually in some cases, using chmod or chown. GZEXE(1)
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