Dogcows Code - chaz/tar/blob - tests/incremen.sh

   1 #! /bin/sh
   2 # A directory older than the listed entry was skipped completely.
   3
   4 . ./preset
   5 . $srcdir/before
   6 prereq gnu oldgnu
   7
   8 set -e
   9 mkdir structure
  10 echo x >structure/file
  11
  12 # On Nextstep (and perhaps other 4.3BSD systems),
  13 # a newly created file's ctime isn't updated
  14 # until the next sync or stat operation on the file.
  15 ls -l structure/file >/dev/null
  16
  17 # If the time of an initial backup and the creation time of a file contained
  18 # in that backup are the same, the file will be backed up again when an
  19 # incremental backup is done, because the incremental backup backs up
  20 # files created `on or after' the initial backup time.  Without the sleep
  21 # command, behaviour of tar becomes variable, depending whether the system
  22 # clock ticked over to the next second between creating the file and
  23 # backing it up.
  24 sleep 1
  25
  26 tar cf archive --listed=list structure
  27 tar cfv archive --listed=list structure
  28 echo -----
  29 sleep 1
  30 echo y >structure/file
  31 tar cfv archive --listed=list structure
  32
  33 out="\
  34 structure/
  35 -----
  36 structure/
  37 structure/file
  38 "
  39
  40 . $srcdir/after