Tag Archives: OS X

Walk down a directory to label (and reveal) zero byte files

Published / by Kevin / Leave a Comment

_count is not working and I’m not sure why. :/

The walkFolder() function is recursive, so be careful where you choose to run this. Made to help identify corrupt old archives that have been copied and copied from Mac to WINDOWS to CDs and back.

on walkFolder(f, _count)
  list folder f
  repeat with i in the result
    set _item to (alias (f & i))
    if folder of (info for _item) then
      walkFolder(f & i & ":", _count)
    else
      if first character of i is not "." then
        if size of (info for _item) is 0 then
          tell application "Finder"
            set label index of _item to 7 -- Gray. Perhaps adding a spotlight comment would be better...
          reveal _item -- Comment this out if you expect a lot of results.
          end tell
          set _count to _count + 1
        end if
      end if
    end if
  end repeat
  return _count
end walkFolder

on run {}
  set _count to 0
  try
    tell application "Finder" to set cwd to folder of window 1 as alias
  on error
    set cwd to path to desktop folder
  end try
  set theFolder to (choose folder "Select a folder to list:" default location cwd) as string
  my walkFolder(theFolder, _count)
  display dialog (_count as text) & " files found to be 0 bytes" giving up after 600
end run

Apologies for formatting errors as I’m editing this post on Safari from OS X 10.5 which doesn’t work well with WordPress’ auto-drafting.

AppleScript Folder Action to auto-trim folder

Published / by Kevin / Leave a Comment

[UPDATE] This does not work as expected. Doesn’t seem to run as a plain AppleScript and when re-worked into an Automator folder action workflow (word salad anyone?) it might work… It has and it also hasn’t. But, even when it has I have the sneaking suspicion iCloud does not propagate deletes from macOS. Wouldn’t be the only inexplicable behavior from that service.

I have a security camera that FTPs a new folder everyday into a local iCloud folder on my home server. FYI, the real location of your iCloud Drive is within ~/Library/Mobile Documents, which is a package folder.

This storage process has not proved ideal since iCloud doesn’t handle automation very well. It works with Finder windows and Save dialogs, but background processes not so much. The result for me has been constant reminders that my iCloud drive is “full” despite deleting the bulk of folders. Most of the space never comes back and many times folders just “deleted” reappear.

Maybe adding another automated process to this soup is not going to help and may make things worse (will bird even notice when items are removed this way?), but what the hell. This script will delete files oldest first until the number of items it counted when it was called reaches the “keep” count (set to “5” here).

This may be attached to any folder, but be aware that it does not send files to the Trash. They are removed with rm.

-- http://strawhousepig.net/

-- Number of items to keep.
property keep : 5

-- Number of seconds until the script may run again (incase of runaway process adding to folder).
property cycle : 10

-- plist to store time last run.
property the_dom : "applescript.folderaction.trimfolder"
property the_key : "epoch"
property the_val : (do shell script "date '+%s'")

on adding folder items to this_folder after receiving added_items
  do_it(this_folder)
end adding folder items to

on run
  set this_folder to choose folder
  do_it(this_folder)
end run

on do_it(this_folder)
  if my read_array(the_dom, the_key, the_val, cycle) is true then return
  do shell script "defaults write " & the_dom & " " & the_key & " " & quoted form of the_val
  tell application "Finder"
    set _items to items of this_folder
    set _items to (sort _items by creation date)
  end tell
  if (count of _items) is greater than keep then
    try
      repeat until (count of _items) is equal to keep
        do shell script "rm -R " & quoted form of POSIX path of (item 1 of _items as alias) -- Will bird sync when using 'rm'?? :/
        set _items to rest of _items
      end repeat
    on error theErr number theNum
      if theNum is not -128 then display dialog theErr giving up after 60
    end try
  end if
end do_it

on read_array(the_dom, the_key, the_val, cycle)
  try
    set last_run to (do shell script "defaults read " & the_dom & " " & the_key)
  on error -- Will error if there is nothing to read.
    return false
  end try
  if the_val - last_run is less than cycle then
    return true
  else
    return false
  end if
end read_array

Sync folders when drive is plugged in.

Published / by Kevin / Leave a Comment

The previous AppleScript post is an earlier version of nearly the same thing. I posted it here to be able to write a new script for where I work. It’s intention is to keep an on-site duplicate of an off-site backup. This can of course be used for simple backups and/or folder syncing operations if given the appropriate trigger(s).

To have this script run automagically attach it as a Folder Action to the Volumes folder (/Volumes).

Also, as the previous post, this script calls an rsync binary in a custom install location. Please be aware of that.

-- The name of the volume to watch for.
property trigger : "Backup"

-- The paths of the folders to sync. Drag-n-drop supported (choose "Alias").
property theFolders : {"/Do not/forget to/add quotes around", "/And/commas between/items"}

-- See the rsync manual (man rsync) for more info.
property rsync_options : "-rtE --ignore-existing"

property skip : {} -- Leave empty. Meant to hold items from theFolders which gave rsync an error so we can start over but then ignore items in this list.

on adding folder items to this_folder after receiving added_items
  repeat with i in added_items
    if i is trigger then
      do_it(skip)
      return
    end if
  end repeat
end adding folder items to

on run
  do_it(skip)
end run

on do_it(skip)
  tell application "System Events" to set trigger_path to POSIX path of every disk whose name is trigger -- When a drive is mounted and its previous mount point was not removed the new mount point will be given a unique number to follow the name (which isn't shown in the Finder), e.g. "/Volumes/Backup 1". This asks the System for the path rather than us blindly using text.
  if trigger_path is {} then
    display dialog "The drive '" & trigger & "' does not appear to be mounted. :("
    return
  end if
  set rsync_options to rsync_options & " "
  repeat with i in theFolders
    tell application "Finder"
      if not (exists (i as POSIX file)) then
        set end of skip to i as text
      end if
    end tell
    log skip
    if i is not in skip then
      set end of skip to i as text
      try
        do shell script "/usr/local/bin/rsync " & rsync_options & quoted form of i & " '" & trigger_path & "/'"
      on error the_err
        if i is last item in theFolders then
          display dialog "rsync encountered a problem: " & the_err
        else
          if button returned of (display dialog "rsync encountered a problem: " & the_err & return buttons {"Cancel", "Continue"}) is "Continue" then
            do_it(skip)
          end if
        end if
      end try
    end if
  end repeat
end do_it

This script includes error handling that isn’t well tested. Getting it to work with it at all was a bit of a trick (particularly if not (exists (i as POSIX file)) since if not (exists POSIX file i) does not work as expected). So that whole “skip” idea may not work as intended if you are asked to continue. The last do_it(skip) call may need to be my do_it(skip) instead.

Using Netatalk & CUPS

Published / by Kevin / Leave a Comment

Using 20+ year old hardware is as much a curse as it is a blessing.

Set-Up:

AccuSet 1000 (imagesetter) – RIP (PowerMac 7500) – CUPS server (Raspberry Pi) – Clients (OS X 10.5, macOS 10.12)

The OS X 10.5 client currently serves as an MDNS print server for the newer OS machine since that is the last Macintosh OS version to speak AppleTalk, which the even older RIP requires (thankfully via ethernet).

In this day and age OS X 10.5 (Intel) has nothing close to a modern web browser. 10.5 PPC does in the wonderful TenFourFox, which as its name implies means OS X 10.4 has a more modern web browser. Hell, Mac OS 9 has Clasilla (progenitor of TenFourFox). In a perfect world I would use the 10.5 machine as the server for a newer, betterer everyday workstation, but that money doesnt exist. So out comes the Raspberry Pi.
Continue reading

Set creation and modification date

Published / by Kevin / Leave a Comment

This is to correct file times on photos that were imported from cameras with bad date settings or when they have been transferred to-and-fro and picked up the wrong data some where or after re-encoding high bit rate video to save a few GBs. [This does not alter the date atoms encoded in (most?) video files. ffmpeg can do that, however.]
Continue reading

OS X Server 5 Shenanigans

Published / by Kevin / Leave a Comment

OS X Server 5 for OS X 10.10. and 10.11, while a significant improvement to Lion Server for OS X 10.7, still behaves oddly when mixing SSL and non-SSL requests. Whereas before it wanted every request redirected to the SSL pipe, now it will let you do either. It won’t, however, let you do both.

WordPress will try to do both. Why? I dunno. It should work, and did on plain Apache 2, but OS X Server 5 puts up a proxy to the WAN and serves from a different port. This is not presented upfront to the Server.app user, but is most likely in the docs. RTFM much? Ha-ha! No.

The affect this had on my WordPress install is instead of logging in being presented with a page that merely stated,

You don’t have permission to view this page.

Or some such equally helpful information. A little web searching turned up the answer. To overcome this the following can be added to wp-includes/http.php

/* Adding this BS for OS X Server 5 being a dick... */
if ($_SERVER['HTTP_X_FORWARDED_PROTO'] == 'https') {
  $_SERVER['HTTPS']='on';
}

I saw a post on wordpress.net that said to put this into config.php, but that did not work for me. Neither did the mod_rewrite mumbo-jumbo in that thread and apparently it didn’t for the OP, either.

I admit being ignorant to what HTTP_X_FORWARDED_PROTO is, but it appears to be a HTTP header from an Apache mod Apple is running. Unique to them or something well known? I dunno. I don’t pretend to try to keep up with this stuff any longer. That’s why I went to WordPress; So I wouldn’t have to.

Save list of folder contents

Published / by Kevin / Leave a Comment

This AppleScript will create a file containing a tree style list of all files inside the chosen directory and save that list in a file created in that directory. The list file will include the path of the listed directory as well as the date and time it was saved.

The default directory in the choose dialog is the folder of the Finder’s frontmost window unless there are no Finder windows. In which case the default is the Desktop folder.

It does not follow aliases (not sure about symlinks) and will indicate an alias by placing ” [alias]” behind the file name.

This is actually a modified version of a script that’s been around the web for years.

global fileList

on listFolder(f, s)
  list folder f
  repeat with i in the result
    if alias of (info for alias (f & i)) then
      set fileList to fileList & s & i & " [alias]" & return
    else
      if package folder of (info for alias (f & i)) then
        set fileList to fileList & s & i & return
      else
        if folder of (info for alias (f & i)) then
          set fileList to fileList & s & i & "/" & return
          listFolder(f & i & ":", s & "    ")
        else
          if first character of i is not "." then
            set fileList to fileList & s & i & return
          end if
        end if
      end if
    end if
  end repeat
  return fileList
end listFolder

try
  tell application "Finder" to set cwd to (POSIX path of (folder of window 1 as string)) as POSIX file
on error
  set cwd to path to desktop folder
end try
set theFolder to (choose folder "Select a folder to list:" default location cwd) as string

--This will get the name of the folder for use in the name of the generated file
set folderName to name of (info for (theFolder as alias))

--This will get the Unix style path of the folder for info purposes inside the file itself
set folderPath to POSIX path of theFolder

set fileList to "# File list of: " & folderPath & " on " & (current date) & return & return
set fileList to listFolder(theFolder, "")

set listFile to ((theFolder) as text) & folderName & " list of files " & (do shell script "date \"+ %Y-%m-%d %H%M\"") & ".txt"

tell application "Finder"
  set newFile to (open for access file listFile with write permission)
  set eof newFile to 0
  write fileList to newFile
  close access newFile
  open listFile as alias
end tell