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