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Full Discussion: Deleting file basing on the timestamp substring in the file name
Top Forums UNIX for Dummies Questions & Answers Deleting file basing on the timestamp substring in the file name Post 302889449 by thuyetti on Thursday 20th of February 2014 04:20:53 PM
Old 02-20-2014
bakunin,
Thanks again so much for taking young time to help me ( and all of the users here...).
It works like a charm now. Here my code :
Code:
#!/bin/sh
DATE=$(date "+%d-%m-%Y_%Hh%Mm%S")
LOG=/Volumes/BACKUP/LOGS/Trash-$DATE.txt

typeset -i TODAY=$(date +%s)
# numbers of day to keep ( 86400 = 1 day )
NDAYS=86400
BCK_DIR=/Volumes/BACKUP/BCK_DATA/_ARCHIVES_
TRASHDIR=/Volumes/BACKUP/Trash

if [ ! -d "$TRASHDIR" ] ; then
     echo "Error: $TRASHDIR does not exist or is not a directory." >> $LOG
     exit 2
fi

touch "${TRASHDIR}/$$"
if [ $? -gt 0 ] ; then
     echo "Error: $TRASHDIR cannot be written to." >>$LOG
     exit 2
else
     rm "${TRASHDIR}/$$"
fi



ls -1 $BCK_DIR | while read FILE ; do
     TS="${FILE#*+}"
	(( OFFSET = TODAY - $TS ))
     if [ $OFFSET -gt $NDAYS ] ; then   # i.e. range check
          #mv "${BCK_DIR}/${FILE}" "${TRASHDIR}/${FILE}"
          mv -v "${BCK_DIR}/${FILE}" "$TRASHDIR" >>$LOG
     fi
done

I don't know why print does not work to output error, so I use echo ( does it matter ? )
And

---------- Post updated at 04:20 PM ---------- Previous update was at 04:16 PM ----------

Bakunin,
I learned so much thanks to you, I'll like to learn more about "modern shell".
Can you please point me to some clues where to start.
Thanks again
Thibault
 

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LEARN ABOUT REDHAT

head

HEAD(1) 								FSF								   HEAD(1)

NAME

       head - output the first part of files

SYNOPSIS

       head [OPTION]... [FILE]...

DESCRIPTION

       Print  first  10 lines of each FILE to standard output.	With more than one FILE, precede each with a header giving the file name.  With no
       FILE, or when FILE is -, read standard input.

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

       -c, --bytes=SIZE
	      print first SIZE bytes

       -n, --lines=NUMBER
	      print first NUMBER lines instead of first 10

       -q, --quiet, --silent
	      never print headers giving file names

       -v, --verbose
	      always print headers giving file names

       --help display this help and exit

       --version
	      output version information and exit

       SIZE may have a multiplier suffix: b for 512, k for 1K, m for 1 Meg.

AUTHOR

       Written by David MacKenzie.

REPORTING BUGS

       Report bugs to <bug-coreutils@gnu.org>.

COPYRIGHT

       Copyright (C) 2002 Free Software Foundation, Inc.
       This is free software; see the source for copying conditions.  There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICU-
       LAR PURPOSE.

SEE ALSO

       The  full documentation for head is maintained as a Texinfo manual.  If the info and head programs are properly installed at your site, the
       command

	      info head

       should give you access to the complete manual.

head (coreutils) 4.5.3						   February 2003							   HEAD(1)
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