计算目标目录内文件的checksum

checksum.sh

#!/bin/bash

# checksum.sh "/path/to/target/dir"

dir="$1"

cd "$dir"

# file=$(ls "$dir")
file=$(ls)

fileNumber=$(ls | wc -l)

for ((i = 1 ; i <= "$fileNumber" ; i++)); do
    fileName=$(echo "$file" | sed -n "${i}p" )
    # if [ -f "${dir}/${fileName}" ]; then
    if [ -f "${fileName}" ]; then

        # echo "$fileName" >> "${dir}/checksum.txt"
        # md5=$(md5sum "${dir}/${fileName}" | cut -d ' ' -f 1)
        # sha1=$(sha1sum "${dir}/${fileName}" | cut -d ' ' -f 1)
        # sha256=$(sha256sum "${dir}/${fileName}" | cut -d ' ' -f 1)
        md5=$(md5sum "${fileName}" | cut -d ' ' -f 1)
        sha1=$(sha1sum "${fileName}" | cut -d ' ' -f 1)
        sha256=$(sha256sum "${fileName}" | cut -d ' ' -f 1)
        # printf "${fileName}\nmd5:\t${md5}\nsha1:\t${sha1}\nsha256:\t${sha256}\n\n" >> "${dir}/checksum.txt"
        printf "${fileName}\nmd5:\t${md5}\nsha1:\t${sha1}\nsha256:\t${sha256}\n\n" >> "checksum.txt"
    fi
done