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批量重命名“案例重复项”

tag-icon • tag-icon bash rename mv
批量重命名“案例重复项”

关于这个问题及解答：https://unix.stackexchange.com/a/188020/189709

for f in *; do mv --backup=numbered -- "$f" "${f,,}"; done
rename -v -- 's/\.~(\d+)~/$1/' *.~*~

mv：此命令隐式将所有文件名更改为小写。如何修改选项才能不这样做？备份编号足以区分文件。

rename: test.~1~ 如果文件 test1 已经存在，则不会重命名。如何更改选项以将 test.~1~ 重命名为 test2？

答案1

您可能希望自己实现重命名策略，因为您正在查看的代码在调用中显式小写文件名以mv捕获实际文件名冲突中的重复项。

以下仅在存在冲突时重命名文件，而不会实际引起冲突（即，它不会回退到 GNUmv来处理冲突）：

#!/bin/bash

# The suffix array contains a filename suffix (a positive integer)
# for each lower-cased filename.
declare -A suffix

# Get all names in the current directory.
set -- *

# Initialise the suffixes for each existing name to zero.
for name do
        suffix[${name,,}]=0
done

for name do

        # Loop until no name collision.
        while true; do
                # Get the current suffix for this filename.
                suf=${suffix[${name,,}]}

                # Increment the suffix for this filename.
                suffix[${name,,}]=$(( ${suffix[${name,,}]} + 1 ))

                # If the suffix is 0, empty it.
                [[ $suf == 0 ]] && suf=

                # Create the new name.
                newname=$name$suf

                # Break out of the loop if the name didn't change, or if
                # there's no other file that has this name.
                if [[ $name == "$newname" ]] ||
                   [[ -z ${suffix[${newname,,}]} ]]
                then
                        break
                fi
        done

        if [[ $name != "$newname" ]]; then
                printf '%s --> %s\n' "$name" "$newname"
                # uncomment the next line to actually do the renaming
                # mv -- "$name" "$newname"
        else
                printf '%s unchanged\n' "$name"
        fi

done

（请注意注释掉的部分mv，您可能希望在注释掉该行的情况下运行它，直到您确信它做了正确的事情）

测试：

$ ls
A         Bb        TEST1     a         bb        test
BB        TEST      Test      bB        script.sh

$ bash script.sh
A unchanged
BB unchanged
Bb --> Bb1
TEST unchanged
TEST1 unchanged
Test --> Test2
a --> a1
bB --> bB2
bb --> bb3
script.sh unchanged
test --> test3

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