Merge branch 'master' of github.com:Bash-it/bash-it

plugins/available/osx-timemachine.plugin.bash

@@ -0,0 +1,84 @@
+cite about-plugin
+about-plugin 'OS X Time Machine functions'
+
+function time-machine-destination() {
+  group "osx-timemachine"
+  about "Shows the OS X Time Machine destination/mount point"
+
+  echo $(tmutil destinationinfo | grep "Mount Point" | sed -e 's/Mount Point   : \(.*\)/\1/g')
+}
+
+function time-machine-list-machines() {
+  group "osx-timemachine"
+  about "Lists the OS X Time Machine machines on the backup volume"
+
+  local tmdest="$(time-machine-destination)/Backups.backupdb"
+
+  find "$tmdest" -maxdepth 1 -mindepth 1 -type d | grep -v "/\." | while read line ; do
+    echo "$(basename "$line")"
+  done
+}
+
+function time-machine-list-all-backups() {
+  group "osx-timemachine"
+  about "Shows all of the backups for the specified machine"
+  param "1: Machine name (optional)"
+  example "time-machine-list-all-backups my-laptop"
+
+  # Use the local hostname if none provided
+  local COMPUTERNAME=${1:-$(scutil --get ComputerName)}
+  local BACKUP_LOCATION="$(time-machine-destination)/Backups.backupdb/$COMPUTERNAME"
+
+  find "$BACKUP_LOCATION" -maxdepth 1 -mindepth 1 -type d | while read line ; do
+    echo "$line"
+  done
+}
+
+function time-machine-list-old-backups() {
+  group "osx-timemachine"
+  about "Shows all of the backups for the specified machine, except for the most recent backup"
+  param "1: Machine name (optional)"
+  example "time-machine-list-old-backups my-laptop"
+
+  # Use the local hostname if none provided
+  local COMPUTERNAME=${1:-$(scutil --get ComputerName)}
+  local BACKUP_LOCATION="$(time-machine-destination)/Backups.backupdb/$COMPUTERNAME"
+
+  # List all but the most recent one
+  find "$BACKUP_LOCATION" -maxdepth 1 -mindepth 1 -type d -name 2\* | sed \$d | while read line ; do
+    echo "$line"
+  done
+}
+
+# Taken from here: http://stackoverflow.com/a/30547074/1228454
+function _tm_startsudo() {
+    sudo -v
+    ( while true; do sudo -v; sleep 50; done; ) &
+    SUDO_PID="$!"
+    trap _tm_stopsudo SIGINT SIGTERM
+}
+function _tm_stopsudo() {
+    kill "$SUDO_PID"
+    trap - SIGINT SIGTERM
+    sudo -k
+}
+
+function time-machine-delete-old-backups() {
+  group "osx-timemachine"
+  about "Deletes all of the backups for the specified machine, with the exception of the most recent one"
+  param "1: Machine name (optional)"
+  example "time-machine-delete-old-backups my-laptop"
+
+  # Use the local hostname if none provided
+  local COMPUTERNAME=${1:-$(scutil --get ComputerName)}
+
+  # Ask for sudo credentials only once
+  _tm_startsudo
+
+  echo "$(time-machine-list-old-backups "$COMPUTERNAME")" | while read i ; do
+    # Delete the backup
+    sudo tmutil delete "$i"
+  done
+
+  _tm_stopsudo
+}