script to view files based on date Post: 85273

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Top Forums Shell Programming and Scripting script to view files based on date Post 85273 by vino on Tuesday 4th of October 2005 09:05:07 AM

10-04-2005

Registered User

In short RTFM.

From man touch

Code:

       -d, --date=STRING
              parse STRING and use it instead of current time

       -F, --forward=SECONDS
              Modify  the time by going forward SECONDS seconds.  For example,
              touch -r foo -F 5 bar will make the file  bar  5  seconds  newer
              than file foo.

       -r, --reference=FILE
              use this file's times instead of current time

That means create /tmp/OLD which has a timestamp provided by the user.

And then create /tmp/NEW which is exactly 24 hours newer compared to /tmp/OLD

And from man find,

Code:

       -newer file
              File was modified more recently than file.  -newer  is  affected
              by  -follow  only  if -follow comes before -newer on the command
              line.

       -size n[bckw]
              File uses n units of space.  The units are  512-byte  blocks  by
              default  or  if `b' follows n, bytes if `c' follows n, kilobytes
              if `k' follows n, or 2-byte words if `w' follows  n.   The  size
              does  not  count  indirect  blocks,  but it does count blocks in
              sparse files that are not actually allocated.

The find script says -- find all files which are newer than /tmp/OLD but not /tmp/NEW and whose size is not zero.

Vino

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touch

TOUCH(1)							   User Commands							  TOUCH(1)

NAME

       touch - change file timestamps

SYNOPSIS

       touch [OPTION]... FILE...

DESCRIPTION

       Update the access and modification times of each FILE to the current time.

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

       -a     change only the access time

       -B, --backward=SECONDS
	      Modify  the time by going back SECONDS seconds.  For example, touch -r foo -B 5 bar will make the file bar 5 seconds older than file
	      foo.

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

       -d, --date=STRING
	      parse STRING and use it instead of current time

       -F, --forward=SECONDS
	      Modify the time by going forward SECONDS seconds.  For example, touch -r foo -F 5 bar will make the file bar 5  seconds  newer  than
	      file foo.

       -f     (ignored)

       -m     change only the modification time

       -r, --reference=FILE
	      use this file's times instead of current time

       -t STAMP
	      use [[CC]YY]MMDDhhmm[.ss] instead of current time

       --time=WORD
	      set time given by WORD: access atime use (same as -a) modify mtime (same as -m)

       --help display this help and exit

       --version
	      output version information and exit

       Note that the -d and -t options accept different time-date formats.

AUTHOR

       Written by Paul Rubin, Arnold Robbins, Jim Kingdon, David MacKenzie, and Randy Smith.

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 touch is maintained as a Texinfo manual.  If the info and touch programs are properly installed  at  your  site,
       the command

	      info touch

       should give you access to the complete manual.

touch (coreutils) 4.5.3 					   October 2002 							  TOUCH(1)

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