user/bkdatename

   1 #!/bin/bash
   2
   3 # Date: 2020-05-10T15:27Z
   4 # Author: Steven Baltakatei Sandoval
   5 # License: GPLv3+
   6 # Ref./Attrib:
   7 #  [1]: John1024 (2014-08-06). ["linux-shell: renaming files to creation time"](https://stackoverflow.com/a/25153352). Licensed CC BY-SA 4.0.
   8 #  [2]: Computer Hope (2019-05-04). ["Bash read builtin command"](https://www.computerhope.com/unix/bash/read.htm).
   9
  10 # Description: Preappends modification time to all files in current
  11 # working directory.
  12
  13 # Usage: bkdatename
  14
  15 # Prompt to change filenames for all files in working directory.
  16 read -p "Append each file's modification date & time to the start of its name in the current working directory? (y/n)" -n 1 -r
  17 echo
  18 if [[ $REPLY =~ ^[Yy]$ ]] # see [2]
  19 then
  20     #Perform renaming operation.
  21     for f in *
  22     do
  23         FILE_NAME="$f"
  24         FILE_MDATE="$(date -r "$f" +"%Y%m%dT%H%M%S")" # See [1].
  25         FILE_NAME_NEW="$FILE_MDATE".."$FILE_NAME"
  26         # Display new file name
  27         echo "Renaming $f to:""$FILE_NAME_NEW"
  28         cp -p ./"$f" ./"$FILE_NAME_NEW"
  29         rm ./"$f"
  30     done
  31     echo "Done."
  32 fi