Score:4

Ubuntu

Count number of files with specific extension(s) for each subdirectory

user3026965

6/13/23, 4:23 AM

Source: Any directory tree with any number and type of files. Q: How many .jpg or .jpg and .png (for example) are in each subdirectory?

How can I limit the code below for files with 1 or more specific extension(s)? Having trouble inserting the -type f -name "*.jpg*", for example.

for DIR in $(find . -maxdepth 99 -type d)
do
    printf "%10d\t%s\n" $(find ${DIR}|wc -l) "${DIR}" 
done

Desired output:

118   ./aaa
 73   ./aaa/bbb
 16   ./aaa/bbb/ccc

If more than one file types are counted, then their combined total number in each subdirectories should be displayed.

276

0 + 0

command-line

scripts

Liso

6/13/23, 2:52 PM

Do you want combine the result of `.jpg` and `.png` ?

Score:4

Ubuntu

pa4080

6/13/23, 3:59 PM

Probably this find|xargs solution will work as you need.

find . -mindepth 1 -maxdepth 99 -type d -print0 | \
   xargs -0 -i bash -c 'printf "%10d\t%s\n" "$(find "$1" -maxdepth 1 -type f -regextype awk -iregex ".*\.(jpg|jpeg|png)" | wc -l)" "$1"' - '{}'

Some explanations:

The -mindepth 1 option is added in order to skip the current directory and process only the sub directories.
The -print0 provides the output entries with null delimiter, it works together with the -0 option of xargs.
The option - "{}" at the end will pass the xargs argument as value of the first positional parameter $1 of the bash command.
Within the second find command -iregex means case insensitive regular expression (you could use -regex instead).

0 + 0

user3026965

6/13/23, 5:06 PM

elegant! is there a easy way to suppress listing those subdirs where the count= 0? (e.g., no files matching the `*\.(jpg|jpeg|png)"`).

pa4080

6/13/23, 5:59 PM

Hi, @user3026965, the most easiest way to suppress these lines is by adding `| grep -Pv '^\s+0'` at the end of the command. The option `-P` enables the extended regular expressions, `-v` suppress the matched lines and the regex itself means a line which starts `^` with one or more `+` whitespaces `\s` followed by `0`.

Score:3

Ubuntu

Liso

6/13/23, 4:15 PM

Here's from mine, modified from this answer.

find . -maxdepth 100 -type d -print0 | while read -d '' -r dir; do count=$(find "$dir" -maxdepth 1 -type f \( -name '*.jpg' -o -name '*.png' \) -ls | wc -l); printf "%5d %s\n" "$count" "$dir"; done

Return this on my test directory.

20 .
11 ./level2
3 ./level2/level3

Where the content is:

$ tree -L 3 level1/
level1/
├── 1.png
├── 10.png
├── 11.png
├── 12.png
├── 13.png
├── 14.png
├── 15.png
├── 16.jpg
├── 17.jpg
├── 18.jpg
├── 19.jpg
├── 2.png
├── 20.jpg
├── 3.png
├── 4.png
├── 5.png
├── 6.png
├── 7.png
├── 8.png
├── 9.png
└── level2
    ├── 20.jpg
    ├── 21.jpg
    ├── 22.jpg
    ├── 23.jpg
    ├── 24.jpg
    ├── 25.jpg
    ├── 26.png
    ├── 27.png
    ├── 28.png
    ├── 29.png
    ├── 30.png
    └── level3
        ├── bull_city.png
        ├── man_city.png
        └── newyork_city.png

2 directories, 34 files

Just realized you only need sub directories printed.

find . -mindepth 1 -maxdepth 100 -type d -print0 | while read -d '' -r dir; do count=$(find "$dir" -maxdepth 1 -type f \( -name '*.jpg' -o -name '*.png' \) -ls | wc -l); printf "%5d %s\n" "$count" "$dir"; done

Return this.

11 ./level2
3 ./level2/level3

0 + 0

Score:1

Ubuntu

mashuptwice

6/13/23, 4:02 PM

Find has logical operators like AND, NOT and OR.

To specify more than one extension to search for you need to put the arguments in parentheses, as well as escape the parentheses to avoid them being processed by bash:

find . \( -type f -name "*.jpg" -o -name "*.png" \)

0 + 0

Elon Musk

I sit in a Tesla and translated this thread with Ai:

EN: Count number of files with specific extension(s) for each subdirectory

TH: Count number of files with specific extension(s) for each subdirectory

RO: Count number of files with specific extension(s) for each subdirectory

RU: Count number of files with specific extension(s) for each subdirectory

VI: Count number of files with specific extension(s) for each subdirectory

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