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Top Forums Shell Programming and Scripting Scheduling a command to run every 3 days through cron Post 302345284 by methyl on Tuesday 18th of August 2009 09:13:47 PM
Old 08-18-2009
Java

One approach from a daily cron, using flag files.

Code:
# Is this day 3? (When we want to run myscript).
if [ -f myscript_day2 ]
then
       # Run myscript on day 3
       myscript
       # Remove flag file ready for next time
       rm myscript_day2
       exit
fi
# Is this day2 ?
if [ -f myscript_day1 ]
then
      rm myscript_day1
      touch myscript_day2
      exit
fi
# Create day 1 flag file
touch myscript_day1


Last edited by methyl; 08-18-2009 at 10:40 PM.. Reason: bad paste
 

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SHCOMP(1)						    User Environment Utilities							 SHCOMP(1)

NAME
shcomp - compile a ksh93 shell script SYNOPSIS
shcomp [ options ] [infile] [outfile]] ORIGIN OF THIS MAN PAGE
This man page was written by Christophe Martin <Schplurtz@free.fr> for the Debian GNU/Linux system. It is based on "shcomp --man" output. DESCRIPTION
Unless -D is specified, shcomp takes a shell script, infile, and creates a binary format file, outfile, that ksh93 can read and execute with the same effect as the original script. Since aliases are processed as the script is read, alias definitions whose value requires variable expansion will not work correctly. If -D is specified, all double quoted strings that are preceded by $ are output. These are the messages that need to be translated to locale specific versions for internationalization. If outfile is omitted, then the results will be written to standard output. If infile is also omitted, the shell script will be read from standard input. OPTIONS
-D, --dictionary Generate a list of strings that need to be placed in a message catalog for internationalization. -n, --noexec Displays warning messages for obsolete or non-conforming constructs. -v, --verbose Displays input from infile onto standard error as it reads it. --man Displays this man page on standard error and exits. --help Shows a short help message and exits. EXIT STATUS
0 Successful completion. >0 An error occurred. DEBIAN WARNING
On a Debian GNU/Linux system, more than one package may provide ksh. the output of shcomp can only be used by ksh93. Any other ksh will be unable to run the compiled script. EXAMPLE
( echo '#! /bin/ksh93' ; shcomp myscript ) > myscript.bin && chmod 755 myscript.bin ./myscript.bin SEE ALSO
ksh(1) IMPLEMENTATION
version shcomp (AT&T Labs Research) 2003-03-02 author David Korn <dgk@research.att.com> copyright Copyright (c) 1982-2005 AT&T Corp. license http://www.opensource.org/licenses/cpl1.0.txt KSH93 Fri Jun 3 2005 SHCOMP(1)
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