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Full Discussion: File name suffix with a running number
Top Forums Shell Programming and Scripting File name suffix with a running number Post 302383050 by Franklin52 on Monday 28th of December 2009 06:47:26 AM
Old 12-28-2009
Quote:
Originally Posted by krishna.saran
Hi all,

i have a shell script invoking a pl/sql proc which then, generates a file in a format
DATA-26-12-2009.txt. The shell script is configured as a cron job to run once a day.

If i need to run the script more than once, i need to suffix the generated file with a two digit running number like DATA-26-12-2009-01.txt.

I need to know how to keep a two digit number and increment it, like 01, 02, 03,...09,10 ..etc.

Pls suggest a simple way to do this.

Thanks
You can try something like this:

Code:
#!/bin/ksh

file="DATA-"$(date "+%d-%m-%Y-")
n=1
ext=".txt"
ls ${file}* | while read i
do
  fn=$(printf "%02d" n)
  if [ ${file}${n}${ext} = ${i} ]
  then
    n=$(( $n + 1 ))
  fi
done

fn=$(printf "%02d" n)
echo "New file:" ${file}${n}${ext}

 

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LEARN ABOUT DEBIAN

apticron

apticron(1)						      General Commands Manual						       apticron(1)

NAME

       apticron - Generate a mail listing packages which are pending an upgrade

SYNOPSIS

       apticron [--cron]

DESCRIPTION

       apticron is a shell script which generates a mail with a list of all packages currently pending an upgrade, as well as summary of changes -
       using apt-listchanges - to a configurable Email address.

       apticron is mainly intended for automatic notification of pending security updates but can also be used	in  many  other  situations  where
       timely updates are necessary.

       The --cron option is only meant to be used when invoked by cron in order to run no more than once a day.

FILES

       /etc/apticron/apticron.conf
	      Configuration file, Email address to mail and profile for use with apt-listchanges are configurable.

       /etc/cron.d/apticron
	      Cron job for executing apticron daily.

       /etc/cron.daily/apticron
	      Fallback cron script for executing apticron (if no crond running or system down at designated time).

       /var/lib/misc/apticron.cron
	      Time stamp file used by apticron when invoked with --cron option.

SEE ALSO

       apt-get(8), apt-listchanges(1), cron(8)

AUTHOR

       Apticron  was initially developed by Colm MacCarthaigh <colm.maccarthaigh@heanet.ie> with contributions from Marc Sherman <msherman@projec-
       tile.ca>. Since 2006 it is maintained and improved by Tiago Bortoletto Vaz <tiago@debian.org>.

																       apticron(1)
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