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Full Discussion: Linux find command returns nothing
Top Forums UNIX for Beginners Questions & Answers Linux find command returns nothing Post 303005135 by jim mcnamara on Friday 13th of October 2017 09:00:23 AM
Old 10-13-2017
How to debug problems like this
steps:
Code:
cd /path/to/files
# are we in the right directory?
pwd  
# filename to find is ABC_DEFGH*
ls -l ABC_DEFGH* |tail -1
# if all of this works out correctly - and you carefully read the date from the ls command
# then the find command you gave will return files

Also note: mtime does this:
filetimes are stored as seconds since Jan 1 1970, which is usually a large number:
Code:
$ date +%s
1507899718

mtime gets that number for right now, then mutiplies the number of seconds, 86400, times the number of days: 20 * 86400 = 1728000.
Next, it subtracts that smaller number of seconds from right now: 1507899718 - 1728000 = 1506171718

So find is really looking for files that have filetimes of 1506171718 or less. Nowhere did I mention anything about calendars. This does not exactly match what your calendar tells you.
You could have a file that is 20 calendar days old but find still would not see it because the calculation is not based on calendars.
Last edited by jim mcnamara; 10-13-2017 at 10:10 AM..
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LEARN ABOUT OSF1

rcsclean

rcsclean(1)															       rcsclean(1)

NAME

       rcsclean - clean up working files

SYNOPSIS

       rcsclean [options] [file...]

OPTIONS

       Use  subst style keyword substitution when retrieving the revision for comparison. See co(1) for details.  Do not actually remove any files
       or unlock any revisions.  Using this option will tell you what rcsclean would do without actually doing it.  Do not log the  actions  taken
       on  standard output.  This option has no effect other than specifying the revision for comparison.  Unlock the revision if it is locked and
       no difference is found.	Emulate RCS version n. See co(1) for details.  Use suffixes to characterize RCS files. See ci(1) for details.

DESCRIPTION

       rcsclean removes working files that were checked out and never modified. For each file given, rcsclean compares	the  working  file  and  a
       revision  in  the  corresponding  RCS  file.  If it finds a difference, it does nothing. Otherwise, it first unlocks the revision if the -u
       option is given, and then removes the working file unless the working file is writable and the revision is locked.  It logs its actions	by
       outputting the corresponding rcs -u and rm -f commands on the standard output.

       If  no file is given, all working files in the current directory are cleaned. Pathnames matching an RCS suffix denote RCS files; all others
       denote working files. Names are paired as explained in ci(1).

       The number of the revision to which the working file is compared may be attached to any of the options -n, -q, -r, or -u.  If  no  revision
       number is specified, then if the -u option is given and the caller has one revision locked, rcsclean uses that revision; otherwise rcsclean
       uses the latest revision on the default branch, normally the root.

       rcsclean is useful for clean targets in Makefiles. See also rcsdiff(1), which prints out the differences, and ci(1),  which  normally  asks
       whether to check in a file if it was not changed.

RESTRICTIONS

       At least one file must be given in older Unix versions that do not provide the needed directory scanning operations.

EXAMPLES

       rcsclean  *.c  *.h

       removes all working files ending in or that were not changed since their checkout.  rcsclean

       removes all working files in the current directory that were not changed since their checkout.

ENVIRONMENT

       options	prepended  to  the  argument  list,  separated	by  spaces.   A backslash escapes spaces within an option. The RCSINIT options are
       prepended to the argument lists of most RCS commands. Useful RCSINIT options include -q, -V, and -x.

DIAGNOSTICS

       The exit status is zero if and only if all operations were successful.  Missing working files and RCS files are silently ignored.

FILES

       rcsclean accesses files much as ci(1) does.

IDENTIFICATION

       Author: Walter F. Tichy.
       Revision Number: 1.1.6.2; Release Date: 1993/10/07.
       Copyright (C) 1982, 1988, 1989 by Walter F. Tichy.
       Copyright (C) 1990, 1991 by Paul Eggert.

SEE ALSO

       ci(1), co(1), ident(1), rcs(1), rcsdiff(1), rcsintro(1), rcsmerge(1), rlog(1), rcsfile(5)

       Walter F. Tichy, RCS--A System for Version Control, Software--Practice & Experience 15, 7 (July 1985), 637-654.

																       rcsclean(1)
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