Handling time-stamps and date-stamps in file names
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Handling time-stamps and date-stamps in file names

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Per default, date2name gets the modification time of matching files and directories and adds a datestamp in standard ISO 8601+ format YYYY-MM-DD (http://datestamps.org/index.shtml) at the beginning of the file- or directoryname.

If an existing timestamp is found, its style will be converted to the selected ISO datestamp format but the numbers stays the same. Executed with an examplefilename “file” this results e.g. in “2008-12-31_file”.

Note: Other that defined in ISO 8601+ the delimiter between hours, minutes, and seconds is not a colon but a dot. Colons are causing several problems on different file systems and are there fore replaced with the (older) DIN 5008 version with dots.

Usage:
         date2name [options] file ...

Run “date2name –help” for usage hints such as:

Options:
  -h, --help         show the extended help message and exit
  -d, --directories  modify only directory names
  -f, --files        modify only file names
  -C, --compact      use compact datestamp             (YYYYMMDD)
  -M, --month        use datestamp with year and month (YYYY-MM)
  -w, --withtime     use datestamp including seconds   (YYYY-MM-DDThh.mm.ss)
  -m, --mtime        take modification time for datestamp [default]
  -c, --ctime        take creation time for datestamp
  --delimiter        overwrite default delimiter
  --nocorrections    do not convert existing datestamps to new format
  -q, --quiet        do not output anything but just errors on console
  -v, --verbose      enable verbose mode
  -s, --dryrun       enable dryrun mode: just simulate what would happen, do
                     not modify files or directories
  --version          display version and exit

Installation

Get it from GitHub or install it via «pip install date2name».

Integration Into Common Tools

Integration into Thunar

Thunar is a popular GNU/Linux file browser for the xfce environment.

Unfortunately, it is rather complicated to add custom commands to Thunar. I found a good description which you might want to follow.

To my disappoinment, even this manual confguration is not stable somehow. From time to time, the IDs of $HOME/.config/Thunar/uca.xml and $HOME/.config/Thunar/accels.scm differ.

For people using Org-mode, I automated the updating process (not the initial adding process) to match IDs again:

Script for checking “tag”: do it tag-ID and path in accels.scm match?

#+BEGIN_SRC sh :var myname="tag"
ID=`egrep -A 2 "<name>$myname" $HOME/.config/Thunar/uca.xml | grep unique-id | sed 's#.*<unique-id>##' | sed 's#<.*$##'`
echo "$myname-ID of uca.xml: $ID"
echo "In accels.scm: "`grep -i "$ID" $HOME/.config/Thunar/accels.scm`
#+END_SRC

If they don’t match, following script re-writes accels.scm with the current ID:

#+BEGIN_SRC sh :var myname="tag" :var myshortcut="<Alt>t"
ID=`egrep -A 2 "<name>$myname" $HOME/.config/Thunar/uca.xml | grep unique-id | sed 's#.*<unique-id>##' | sed 's#<.*$##'`
echo "appending $myname-ID of uca.xml to accels.scm: $ID"
mv $HOME/.config/Thunar/accels.scm $HOME/.config/Thunar/accels.scm.OLD
grep -v "\"$myshortcut\"" $HOME/.config/Thunar/accels.scm.OLD > $HOME/.config/Thunar/accels.scm
rm $HOME/.config/Thunar/accels.scm.OLD
echo "(gtk_accel_path \"<Actions>/ThunarActions/uca-action-$ID\" \"$myshortcut\")" >> $HOME/.config/Thunar/accels.scm
#+END_SRC

Integration into Windows Explorer for single files

Create a registry file add_date2name_to_context_menu.reg and edit it to meet the following template. Please make sure to replace the paths (python, USERNAME and date2name.py) accordingly:

Windows Registry Editor Version 5.00

;; for files:

[HKEY_CLASSES_ROOT\*\shell\date2name]
@="date2name (single file)"

[HKEY_CLASSES_ROOT\*\shell\date2name\command]
@="C:\\Python36\\python.exe C:\\Users\\USERNAME\\src\\date2name\\date2name.py -i \"%1\""

Execute the reg-file, confirm the warnings (you are modifying your Windows registry after all) and cheer up when you notice “date2name (single file)” in the context menu of your Windows Explorer.

As the heading and the link name suggests: this method works on single files. So if you select three files and invoke this context menu item, you will get three different filetag-windows to tag one file each.

Integration into Windows Explorer for single and multiple selected files

Integration of date2name to the “Send to” context menu has the advantage that you are able to modify all selected files at once.

However, itegrating to the “Send to” context menu is not trivial. Therefore, I wrote integratethis, which automates these steps:

pip3 install date2name integratethis
integratethis date2name
integratethis time2name

Integration into FreeCommander

FreeCommander is a orthodox file manager for Windows. You can add date2name as an favorite command:

  • Tools → Favorite tools → Favorite tools edit… (S-C-y)
    • Create new toolbar (if none is present)
    • Icon for “Add new item”
      • Name: date2name
      • Program or folder: <Path to date2name.bar>
    • date2name.bat looks like: (please do modify the paths to meet your requirement)
      C:\Python36\python.exe C:\Users\YOURUSERNAME\src\date2name\date2name %*
      REM optionally: set /p DUMMY=Hit ENTER to continue...
              
      • Start folder: %ActivDir%
      • Parameter: %ActivSel%
      • [X] Enclose each selected item with =”=
      • Hotkey: select next available one such as Ctrl-1 (it gets overwritten below)
    • remember its name such as “Favorite tool 01”
      • OK

So far, we’ve got date2name added as a favorite command which can be accessed via menu or icon toolbar and the selected keyboard shortcut. If you want to assign a different keyboard shortcut than Ctrl-1 like Alt-d you might as well follow following procedure:

  • Tools → Define keyboard shortcuts…
    • Scroll down to the last section “Favorite tools”
    • locate the name such as “Favorite tool 01”
    • Define your shortcut of choice like Alt-d in the right hand side of the window
      • If your shortcut is taken, you’ll get a notification. Don’t overwrite essential shortcuts you’re using.
    • OK

Related tools and workflows

Alternative implementations of date2name:


This tool is part of a tool-set which I use to manage my digital files such as photographs. My work-flows are described in this blog posting you might like to read.

In short:

For tagging, please refer to filetags and its documentation.

See date2name for easily adding ISO time-stamps or date-stamps to files.

For easily naming and tagging files within file browsers that allow integration of external tools, see appendfilename (once more) and filetags.

Moving to the archive folders is done using move2archive.

Having tagged photographs gives you many advantages. For example, I automatically choose my desktop background image according to the current season.

Files containing an ISO time/date-stamp gets indexed by the filename-module of Memacs.

Here is a 45 minute talk I gave at Linuxtage Graz 2018 presenting the idea of and workflows related to appendfilename and other handy tools for file management:

bin/2018-05-06 filetags demo slide for video preview with video button -- screenshots.png

How to Thank Me

I’m glad you like my tools. If you want to support me:

  • Send old-fashioned postcard per snailmail - I love personal feedback!
  • Send feature wishes or improvements as an issue on GitHub
  • Create issues on GitHub for bugs
  • Contribute merge requests for bug fixes
  • Check out my other cool projects on GitHub