Question

I have a bash script that gives me counts of files in all of the directories recursively that were edited in the last 45 days

 find . -type f -mtime -45| rev | cut -d . -f1 | rev | sort | uniq -ic | sort -rn

I have a directory called

\parent

and in parent I have:

\parent\a
\parent\b
\parent\c

I would run the above script once on folder a, once on b and once on c.

The current output is:

     91 xls
     85 xlsx
     49 doc
     46 db
     31 docx
     24 jpg
     22 pub
     10 pdf
      4 msg
      2 xml
      2 txt
      1 zip
      1 thmx
      1 htm
      1 /ic

I would like to run the script from \parent on all the folders inside \parent and get an output like this:

+-------+------+--------+
| count | ext  | folder |
+-------+------+--------+
|    91 | xls  | a      |
|    85 | xlsx | a      |
|    49 | doc  | a      |
|    46 | db   | a      |
|    31 | docx | a      |
|    24 | jpg  | a      |
|    22 | pub  | a      |
|    10 | pdf  | a      |
|     4 | msg  | a      |
|    98 | jpg  | b      |
|    92 | pub  | b      |
|    62 | pdf  | b      |
|     2 | xml  | b      |
|     2 | txt  | b      |
|     1 | zip  | b      |
|     1 | thmx | b      |
|     1 | htm  | b      |
|     1 | /ic  | b      |
|    66 | txt  | c      |
|    48 | msg  | c      |
|    44 | xml  | c      |
|    30 | zip  | c      |
|    12 | doc  | c      |
|     6 | db   | c      |
|     6 | docx | c      |
|     3 | jpg  | c      |
+-------+------+--------+

How can I accomplish this with bash?

Answer 1

Put it into a script, make it executable: chmod +x script.sh and run it with: ./script.sh

#!/bin/sh

find . -type f -mtime -45 2>/dev/null \
    | sed 's|^\./\([^/]*\)/|\1/|; s|/.*/|/|; s|/.*.\.| |p; d' \
    | sort | uniq -ic \
    | sort -b -k2,2 -k1,1rn \
    | awk '
BEGIN{ 
    sep = "+-------+------+--------+"
    print sep "\n| count | ext  | folder |\n" sep
}

{ printf("| %5d | %-4s | %-6s |\n", $1, $3, $2) }

END{ print sep }'

• sed 's|^\./\([^/]*\)/|\1/|; s|/.*/|/|; s|/.*.\.| |p; d'

  1. s|^\./\([^/]*\)/.*/|\1 | substitutes ./a/file.xls with a/file.xls.
  2. s|/.*/|/| substitutes b/some/dir/file.mp3 with b/file.mp3.
  3. s|/.*.\.| |p substitutes a file.xls with a xls, if s///p is successful then it also prints to standard out, (to avoid files without extension).
  4. d deletes the line (to avoid printing matching (again) or non-matching lines).

• sort | uniq -ic counts each group of extension and directory name.

• sort -b -k2,2 -k1,1rn sorts first by directory (field 2), small -> large, and then by count (field 1) in reverse order (large -> small) and numerically. -b makes sort(1) ignore blanks (spaces/tabs).

• the last awk part pretty prints the output, maybe you want to put this into a separate script.

If you want to see how each pipe filters the results just try to remove each and you will see the output.

Here you can find good tutorials about sh/awk/sed, etc.

http://www.grymoire.com/Unix/