如何使bash脚本按特定编号对文件夹中的文件进行分类

Question

I found a script, here on StackOverflow, which I modified a little. The script classifies all files from a folder in subfolders, each subfolder having only 8 files. But I have files with such names 0541_2pcs.jpg. 2pcs means two pieces (copies).

so I would like the script to take this into count when dividing files to each folder. eg a folder may have 6 files and this 0541_2pcs.jpg which literally means 2 files and so on, depending on the number indicated in the file's name.

This is the script:

cd photos;
dir="${1-.}"
x="${1-8}"

let n=0
let sub=0
while IFS= read -r file ; do
    if [ $(bc <<< "$n % $x") -eq 0 ] ; then
            let sub+=1
            mkdir -p "Page-$sub"
            n=0
    fi

    mv "$file" "Page-$sub"
    let n+=1
done < <(find "$dir" -maxdepth 1 -type f)

Can anyone help me?

Answer 1

You can add a test for whether a file name contains the string "2pcs" via code like [ ${file/2pcs/x} != $file ] . In the script shown below, if that test succeeds then n is incremented a second time. Note, if the eighth file tested for inclusion in a directory is a multi-piece file, you will end up with one too many files in that directory. That could be handled by additional testing the script doesn't do. Note, there's no good reason for your script to call bc to do a modulus, and setting both of dir and x from the first parameter doesn't work; my script uses two parameters.

#!/bin/bash

# To test pagescript, create dirs four and five in a tmp dir.
# In four, say
#    for i in {01..30}; do touch $i.jpg; done
#    for i in 03 04 05 11 16 17 18; do mv $i.jpg ${i}_2pcs.jpg; done
# Then in the tmp dir, say
#     rm -rf Page-*; cp four/* five/; ../pagescript five; ls -R

#cd photos;   # Leave commented out when testing script as above
dir="${1-.}"  # Optional first param is source directory
x=${2-8}      # Optional 2nd param is files-per-result-dir

let n=x
let sub=0
for file in $(find "$dir" -maxdepth 1 -type f)
do  # Uncomment next line to see values as script runs 
    #echo file is $file, n is $n, sub is $sub, dir is $dir, x is $x
    if [ $n -ge $x ]; then
        let sub+=1
        mkdir -p Page-$sub
        n=0
    fi
    mv "$file" Page-$sub
    [ ${file/2pcs/x} != $file ] && let n+=1
    let n+=1
done