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Full Discussion: Tar command generation with Find
Top Forums UNIX for Beginners Questions & Answers Tar command generation with Find Post 302996208 by royinfo.alain on Friday 21st of April 2017 02:01:39 PM
Old 04-21-2017
Thanks Corona688,

I need to select only files modified since last x days, this is why in the first post you can see -mtime -nbdays on my find command.

And Yes .sf are files.

I don't understand the section :

# Add .sfd to list if exists, .sf if not

I need to generate 1 tar file that will contain all files selected (.sfd).

1 - find all .sf file modified since last 2 years
2- with that list of files, see if a file (same filename) but with the extension .sfd exist. if the .sfd exist keep only the .sfd file.. IF not exist skip the file and process the next .sf file.

thank you

---------- Post updated at 12:47 PM ---------- Previous update was at 12:08 PM ----------

Corona688,

the fact that I'm just a beginner in Unix, I just understand what you saying..

FILES="$FILES $FILE"

At the end, $FILES with contain all .sfd file picked ||

Just need to be able to select only files (.sf) where the last mods date is max 2 years.

thanks

---------- Post updated at 01:09 PM ---------- Previous update was at 12:47 PM ----------

I tried the commands (from Corona688) and I got the error :

The specified substitution is not valid for this command.

related to the line :

FILE2="${FILE/.sf}".sfd

thanks

---------- Post updated at 02:01 PM ---------- Previous update was at 01:09 PM ----------

Hello,

I find a way to replace the .sf by .sfd without error by usinf sed.

Code:
FILES=""
for FILE in *.sf
do
FILE2=`echo $FILE | sed 's/\.sf/.sfd/g'` 
[ -e "$FILE2" ] && FILE="$FILE2"
FILES="$FILES $FILE"
done
echo tar -cf - $FILES

Now, what is missing is the way to select only files (.sf) where the last mod date is 2 years.

Something similar that I did in a find command, but need to be done in the FOR command that Corona688 gave us.

Something similar to :
find *.sf -type f -mtime -$nb_days | ...

thanks a lot
Last edited by Corona688; 04-21-2017 at 03:16 PM..
 

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LEARN ABOUT SUSE

truncate

TRUNCATE(1)							   User Commands						       TRUNCATE(1)

NAME

       truncate - shrink or extend the size of a file to the specifed 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=FILE
	      use this FILE's size

       -s, --size=SIZE
	      use this SIZE

       --help display this help and exit

       --version
	      output version information and exit

       SIZE is a number which may be followed by one of the following suffixes: KB 1000, K 1024, MB 1000*1000, M 1024*1024, and so on for G, T, P,
       E, Z, Y.

       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.

       Note that the -r and -s options are mutually exclusive.

AUTHOR

       Written by Padraig Brady.

REPORTING BUGS

       Report truncate bugs to bug-coreutils@gnu.org
       GNU coreutils home page: <http://www.gnu.org/software/coreutils/>
       General help using GNU software: <http://www.gnu.org/gethelp/>

COPYRIGHT

       Copyright (C) 2009 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)

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

	      info coreutils 'truncate invocation'

       should give you access to the complete manual.

GNU coreutils 7.1						     July 2010							       TRUNCATE(1)
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