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Full Discussion: shell script - search a file and perform some action
Top Forums Shell Programming and Scripting shell script - search a file and perform some action Post 302451826 by zaxxon on Wednesday 8th of September 2010 06:48:25 AM
Old 09-08-2010
The script could look like:
Code:
#!/bin/bash

FILENAME=service.tra
S_PATH=/path/to/your/trace
D_PATH=/home/linus/gaurav

while :; do
   FOUND=$(find $S_PATH -type f -name "$FILENAME" -size +3000c -print)
   if [[ -n $FOUND ]]; then
      echo "File $FILENAME is larger than 3k - moving it."
      mv $FOUND $D_PATH
   fi
   sleep 3
done

exit 0

For infinite loops maybe put a sleep in there - else it might push your box to 100% CPU usage. In this example I use "find" but when the destination of the mv is also below this path, you'll get a problem, just as a site note. You might to use -purge in the find or check with ls -l or stat for the size of the file instead and check with -e if the file exists before that.

Code:
$one=`expr $one + 1`

Will not work since in a shell script there may be no spaces on the left or right of the equal sign. Also when declaring a variable there may be no $ in the name of the variable.
 

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LEARN ABOUT DEBIAN

surfraw-update-path

SURFRAW-UPDATE-PATH(1)					User Contributed Perl Documentation				    SURFRAW-UPDATE-PATH(1)

NAME

       surfraw-update-path - updates PATH in shell config files

SYNOPSIS

       surfraw-update-path [-add] [-remove] [-check] [-sys] [-all] [-help] [-shell=SHELL]

DESCRIPTION

       surfraw-update-path adds the surfraw elvi directory (/usr/lib/surfraw) to your PATH in your shell's config file.

       Currently it supports bash, sh, csh, tcsh, ash, dash, ksh, pdksh, zsh, rc, and es

       Don't forget to login again or source your login files for it to take effect.

OPTIONS

       -check
	   Checks to see if the surfraw config code is present.  This is the default.

       -add
	   Adds the surfraw config code.

       -remove
	   Removes the surfraw config code

       -sys
	   Updates the system-wide shell config instead of the user.  Must be done as root.

       -shell=SHELL
	   Selects the shell to configure. Defaults to the value of the $SHELL environment variable.

	   Currently supported shells are:

	   sh, ash, bash, dash, csh, tcsh, ksh, pdksh, zsh, rc, and es.

       -all
	   Attempts to configure the startup files for all known shells

       -help
	   Gives a usage message

RETURN VALUE

       -check returns 0 if the surfraw code is present in the file, 1 if it is not found, or 2 on error.

       All other options return 0 on success, or 2 on error.

ENVIRONMENT

       SHELL
	   Used to determine which shell to configure, if -shell is not given.

       HOME
	   Used to find users config files.

       ENV Used by posix-compliant shells to specify a startup rc file.

       ZDOTDIR
	   Used to find user config files for zsh. If not set, defaults to HOME.

SEE ALSO

       surfraw(1), sh(1), ash(1), bash(1), dash(1), csh(1), tcsh(1), ksh(1), pdksh(1), zsh(1), rc(1), es(1)

AUTHOR

       Ian Beckwith <ianb@erislabs.net>

perl v5.12.4							    2011-07-12						    SURFRAW-UPDATE-PATH(1)
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