Delete files older than "x" if directory size is greater than "y" Post: 302394093

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Top Forums Shell Programming and Scripting Delete files older than "x" if directory size is greater than "y" Post 302394093 by vbe on Wednesday 10th of February 2010 12:22:24 PM

02-10-2010

Moderator

Im no bash expert... (so use with caution as I cant test for you... based on my sh/ksh knowledge

Code:

#!/bin/bash
# you could add some comments on how it should work...
# Its always handy to give some more information and
# with a program that rm, test all parameters are set 
# and are coherent or come out with a short help/syntax
# to display
du -hs $1          # I suppose you mean $1=the input directory?
SIZE=$(du -sk $1)
# where do you get the size form?
while read SIZE ENTRY   # either you echo "enter size..."
                                 # and the read SIZE
do
                                 # or you accpet SIZE as 2nd argument $2
if [ ${SIZE} -gt 200 ];   # which gives you 
                         # if [ $(SIZE) -gt "$2" ] 
then

find $1 -mtime +$2 -exec rm -f {} \;
echo "Files older than $2 days deleted"
else
echo "free Space available"
fi
done

---------- Post updated at 18:17 ---------- Previous update was at 18:14 ----------

Your $2 would become $3...

---------- Post updated at 18:22 ---------- Previous update was at 18:17 ----------

About testing your arguments, this is a start:

Code:

#Test  params
if [ $# -eq 0 ];
then
        echo " params missing!"
        echo "Usage : $0 directory size (in KB)"
        exit 1
else
   if  [ $# -gt 3 ];
   then
        echo " too many arguments"
        echo "Usage : $0 directory size (in KB)  days"
        exit 1
   else
      blah blah
      ...
  fi
fi

Last edited by vbe; 02-10-2010 at 01:28 PM..

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truncate

TRUNCATE(1)							   User Commands						       TRUNCATE(1)

NAME

       truncate - shrink or extend the size of a file to the specified size

SYNOPSIS

       truncate OPTION... FILE...

DESCRIPTION

       Shrink or extend the size of each FILE to the specified size

       A FILE argument that does not exist is created.

       If  a  FILE  is	larger than the specified size, the extra data is lost.  If a FILE is shorter, it is extended and the extended part (hole)
       reads as zero bytes.

       Mandatory arguments to long options are mandatory for short options too.

       -c, --no-create
	      do not create any files

       -o, --io-blocks
	      treat SIZE as number of IO blocks instead of bytes

       -r, --reference=RFILE
	      base size on RFILE

       -s, --size=SIZE
	      set or adjust the file size by SIZE bytes

       --help display this help and exit

       --version
	      output version information and exit

       The SIZE argument is an integer and optional unit (example: 10K is 10*1024).  Units are K,M,G,T,P,E,Z,Y (powers of 1024) or KB,MB,... (pow-
       ers of 1000).

       SIZE  may also be prefixed by one of the following modifying characters: '+' extend by, '-' reduce by, '<' at most, '>' at least, '/' round
       down to multiple of, '%' round up to multiple of.

AUTHOR

       Written by Padraig Brady.

REPORTING BUGS

       GNU coreutils online help: <http://www.gnu.org/software/coreutils/>
       Report truncate translation bugs to <http://translationproject.org/team/>

COPYRIGHT

       Copyright (C) 2017 Free Software Foundation, Inc.  License GPLv3+: GNU GPL version 3 or later <http://gnu.org/licenses/gpl.html>.
       This is free software: you are free to change and redistribute it.  There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

       dd(1), truncate(2), ftruncate(2)

       Full documentation at: <http://www.gnu.org/software/coreutils/truncate>
       or available locally via: info '(coreutils) truncate invocation'

GNU coreutils 8.28						   January 2018 						       TRUNCATE(1)