v

   1 #!/bin/sh
   2 commit()
   3 {
   4   ls -a | fgrep -xv -e . -e .. -e .v | xargs tar cjf "$dir/$(date +%s)"
   5   cat >>"$dir/l"
   6   printf '\n' >>"$dir/l"
   7 }
   8 rollback()
   9 {
  10   [ -z "$1" ] && v=1 || v="$1"
  11   tar xjf "$dir/$(ls -t $dir | fgrep -xv l | sed -n \"$v\"p )"
  12 }
  13 nuke()
  14 {
  15   ls -a | fgrep -xv -e . -e .. -e .v | xargs rm -rf --
  16   rollback "$1"
  17 }
  18 branch()
  19 {
  20   [ -z "$1" ] && exit 1
  21   mkdir -p ".v/$1"
  22   printf '%s' "$1" >.v/b
  23 }
  24 merge()
  25 {
  26   [ -z "$1" ] && exit 1
  27   tar xjf "$1"
  28   commit
  29 }
  30 wipe()
  31 {
  32   cd "$dir"
  33   ls -t | fgrep -xv l | sed 1d | xargs rm --
  34 }
  35 dir=".v/$(cat .v/b)"
  36 t=$1
  37 shift
  38 $(cat <<. | grep "^$t") "$@"
  39 commit
  40 rollback
  41 nuke
  42 branch
  43 merge
  44 wipe
  45 .