iankelling.org Git - distro-setup/blob - myunison

   1 #!/bin/bash -l
   2
   3 set -eE -o pipefail
   4 trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" returned $?" >&2' ERR
   5 set -x
   6
   7 gen_args=()
   8 do_snapshot=true
   9 batch=false
  10 while [[ $1 ]]; do
  11     case $1 in
  12         -ob) gen_args+=(--ours -b); batch=true; shift ;;
  13         -b) gen_args+=(-b); batch=true; shift ;;
  14         -n) do_snapshot=false; shift ;;
  15         -h|--help)
  16             echo "$0: help is head of $BASH_SOURCE:"
  17             head -n 30 "$BASH_SOURCE"
  18             exit 0
  19             ;;
  20         --) shift; break ;;
  21         -*) gen_args+=($1) ; shift ;;
  22         *) host=$1; shift ;;
  23     esac
  24 done
  25 if [[ ! $host ]]; then
  26     host=$1
  27 fi
  28
  29 # arch and debian don't play nice with unison.
  30 # "connection lost" on unison-gtk, with bignum errs in term,
  31 # and simply freezing on cli, all means compiled under
  32 # different ocaml versions.
  33 # I had the great realization that unison is a self contained
  34 # binary with no special runtime dependencies.
  35 # However, I got a gtk error running the ui version.
  36 # todo: I should test pushing my unison version instead
  37 # of pulling it.
  38 echo "$0: running: gen ${gen_args[@]}"
  39 /p/c/subdir_files/.unison/gen ${gen_args[@]}
  40 if [[ ! $host ]]; then
  41     echo "$0: error: expected argument for hostname"
  42     exit 1
  43 fi
  44
  45
  46 # todo: this doesn't deal with if the host is running arch too
  47
  48 # debian uses this path, and has gtk version linked as /usr/bin/unison,
  49 # but I'd rather not push the gtk version
  50 push_path=/usr/bin/unison-latest-stable
  51 if [[ ! -e $push_path ]]; then
  52     push_path=/usr/bin/unison
  53 fi
  54 # note, i'd prefer to use /usr/local/bin, but it's not in arch's default
  55 # path for root.
  56 scp /usr/bin/unison-latest-stable root@$host:/usr/bin/unison
  57
  58 if $do_snapshot; then
  59     unison-snapshot
  60     if ! ssh root@$host "! type unison-snapshot || unison-snapshot"; then
  61         if [[ ! ${gen_args[@]} ]]; then
  62             # gen_args are all about syncing with new systems where
  63             # we could expect the remote snapshot to not be available yet.
  64             echo "$0: error: failed remote unison-snapshot"
  65             exit 1
  66         fi
  67     fi
  68 fi
  69
  70 if $batch; then
  71     # todo, figure out what the cli version is called in non-debian distros
  72     f=unison-latest-stable
  73 else
  74     f=unison-gtk
  75     type -t $f &>/dev/null || f=unison-gtk2 # for arch
  76 fi
  77
  78 if s $f "$host"; then
  79     if [[ $host == frodo ]]; then
  80         # only send data to the machine i do full backups to
  81         p=/q/p/c/machine_specific/$HOSTNAME/.unison/
  82         s rsync -rlptgohi $p root@$host:$p
  83     fi
  84     p=/q/p/c/machine_specific/$host/.unison/
  85     s rsync -rlptgohvi root@$host:$p $p
  86 fi