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Full Discussion: help in handling loops
Top Forums Shell Programming and Scripting help in handling loops Post 54110 by zazzybob on Monday 2nd of August 2004 05:24:57 PM
Old 08-02-2004
It's a bit kludgey, but you could always append the value to a temporary file if it exists, and check that next time round

e.g. your code segment

Code:
if [ -f ${input[i]}/out.txt ]; then
//blah blah blah

continue

else
sleep 60
fi

could be changed to

Code:
if [ -f ${input[i]}/out.txt ]; then

   grep "${input[i]}" tempfile >/dev/null 2>&1

   if [ "$?" -ne 0 ]; then  # it isn't in tempfile, so
      # append the filename to the tempfile so its avoided
      # next time around
      echo "${input[i]}" >> tempfile
      # do processing here so it's only processed the first
      # time its encountered
   fi

   continue

else
   sleep 60
fi

Remember to rm the tempfile when it's no longer needed, and set up a trap, etc.

Just an idea

Cheers
ZB
 

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SERVICE(8)						    BSD System Manager's Manual 						SERVICE(8)

NAME
service -- control (start/stop/etc.) or list system services SYNOPSIS
service -e service -R service [-v] -l | -r service [-v] <rc.d script> start|stop|etc. DESCRIPTION
The service command is an easy interface to the rc.d system. Its primary purpose is to start and stop services provided by the rc.d scripts. When used for this purpose it will set the same restricted environment that is in use at boot time (see below). It can also be used to list the scripts using various criteria. The options are as follows: -e List services that are enabled. The list of scripts to check is compiled using rcorder(8) the same way that it is done in rc(8), then that list of scripts is checked for an "rcvar" assignment. If present the script is checked to see if it is enabled. -R Restart all enabled local services. -l List all files in /etc/rc.d and the local startup directories. As described in rc.conf(5) this is usually /usr/local/etc/rc.d. All files will be listed whether they are an actual rc.d script or not. -r Generate the rcorder(8) as in -e above, but list all of the files, not just what is enabled. -v Be slightly more verbose ENVIRONMENT
When used to run rc.d scripts the service command sets HOME to / and PATH to /sbin:/bin:/usr/sbin:/usr/bin which is how they are set in /etc/rc at boot time. EXIT STATUS
The service utility exits 0 on success, and >0 if an error occurs. EXAMPLES
The following are examples of typical usage of the service command: service named status service -rv The following programmable completion entry can be use in bash(1) for the names of the rc.d scripts: _service () { local cur cur=${COMP_WORDS[COMP_CWORD]} COMPREPLY=( $( compgen -W '$( service -l )' -- $cur ) ) return 0 } complete -F _service service SEE ALSO
bash(1) (ports/shells/bash), rc.conf(5), rc(8), rcorder(8) HISTORY
The service utility first appeared in FreeBSD 7.3. AUTHORS
This manual page was written by Douglas Barton <dougb@FreeBSD.org>. BSD
December 11, 2012 BSD
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