Find files in specific datetime interval, then copy to selected folder.

copy4timeinterval.sh

#!/bin/sh

test $# = 2 || test $# = 3 || { echo "Usage: $0 start-time end-time [dest-folder]"; exit; }

Fail() { echo "ERROR: $@" 1>&2; exit 1; }

    NOW="$(date +%s)"
  START="$(date +%s -d "$1" 2>/dev/null)"; test -z "$START"  && Fail "wrong start-time: $1"
 FINISH="$(date +%s -d "$2" 2>/dev/null)"; test -z "$FINISH" && Fail "wrong end-time: $2"
DESTDIR="$3"

#est "$FINISH" -gt "$NOW"   && Fail "end-time cannot be in future."
test "$FINISH" -lt "$START" && Fail "end-time cannot be before start-time."

test -z "$DESTDIR" || test -d "$DESTDIR/" || Fail "wrong target directory $DESTDIR"

MAXDELTA="$(expr '(' $NOW - $START  + 59 ')' / 60)"
MINDELTA="$(expr '(' $NOW - $FINISH      ')' / 60)"

DoFind() { find . -type "f" -mmin "-$MAXDELTA" -mmin "+$MINDELTA" "$@"; }

if test -d "$DESTDIR"
    then DoFind -exec cp -a '{}' $DESTDIR/ ';'
    else DoFind
fi