降低文件名增量

Question

我有一个文件夹，其中有不同的文件递增。

kiril_lab_poi08-4-17-001.pdf
kiril_lab_poi08-4-17-002.pdf
kiril_lab_poi08-4-17-003.pdf
kiril_lab_poi08-4-17-004.pdf
kiril_lab_poi08-4-17-005.pdf
kiril_lab_poi08-4-17-006.pdf
kiril_lab_poi08-4-17-007.pdf
kiril_lab_poi08-4-17-009.pdf
kiril_lab_poi08-4-17-010.pdf
kiril_lab_poi08-4-17-011.pdf
kiril_lab_poi08-4-17-012.pdf
[...]
kiril_lab_poi08-4-17-150.pdf
darin_lab_dar04-15-001.pdf
darin_lab_dar04-15-002.pdf
darin_lab_dar04-15-003.pdf
darin_lab_dar04-15-004.pdf
darin_lab_dar04-15-005.pdf
[...]
darin_lab_dar04-15-054.pdf

我的文件从 001 开始，我希望它们从 000 开始：

kiril_lab_poi08-4-17-000.pdf 
kiril_lab_poi08-4-17-001.pdf
kiril_lab_poi08-4-17-002.pdf
kiril_lab_poi08-4-17-003.pdf
kiril_lab_poi08-4-17-004.pdf
kiril_lab_poi08-4-17-005.pdf
kiril_lab_poi08-4-17-006.pdf
kiril_lab_poi08-4-17-007.pdf
kiril_lab_poi08-4-17-009.pdf
kiril_lab_poi08-4-17-010.pdf
kiril_lab_poi08-4-17-011.pdf
[...]
kiril_lab_poi08-4-17-149.pdf
darin_lab_dar04-15-000.pdf
darin_lab_dar04-15-001.pdf
darin_lab_dar04-15-002.pdf
darin_lab_dar04-15-003.pdf
darin_lab_dar04-15-004.pdf
[...]
darin_lab_dar04-15-053.pdf

bash中有没有一种方法可以将一堆文件的增量“减”一？

Answer 1

鉴于此文件模式：

$ tree .
.
├── darin_lab_dar04-15-001.pdf
├── darin_lab_dar04-15-002.pdf
├── darin_lab_dar04-15-003.pdf
├── darin_lab_dar04-15-004.pdf
├── darin_lab_dar04-15-005.pdf
├── darin_lab_dar04-15-054.pdf
├── kiril_lab_poi08-4-17-001.pdf
├── kiril_lab_poi08-4-17-002.pdf
├── kiril_lab_poi08-4-17-003.pdf
├── kiril_lab_poi08-4-17-004.pdf
├── kiril_lab_poi08-4-17-005.pdf
├── kiril_lab_poi08-4-17-006.pdf
├── kiril_lab_poi08-4-17-007.pdf
├── kiril_lab_poi08-4-17-009.pdf
├── kiril_lab_poi08-4-17-010.pdf
├── kiril_lab_poi08-4-17-011.pdf
├── kiril_lab_poi08-4-17-012.pdf
└── kiril_lab_poi08-4-17-150.pdf

这是一个 GNU awk 可以做到这一点：

gawk '
    match($0, "(^.*[^0-9])([0-9]+)\\.([^.]+)$", a) {
        new_file=a[1] sprintf("%0*i", length(a[2]), a[2]-1) "." a[3]
        old_file=sprintf("%s%s.%s", a[1],a[2],a[3])
        tab=1
        while (system("test -e " new_file)==0) 
            new_file=a[1] a[2] "_" tab++ "." a[3]

        printf "\"%s\" => \"%s\"\n", old_file, new_file
        s=sprintf("mv \"%s\" \"%s\"", old_file, new_file)
        system(s)
    }
' <(printf "%s\n" *.pdf)

或者在 Bash 中：

#!/bin/bash

fp='(^.*[^0-9])([0-9]+)\.([^.]+)$'

for fn in *.pdf; do
    if [[ $fn =~ $fp ]]; then 
        old_file=$fn
        fp1=${BASH_REMATCH[1]}
        fp2=${BASH_REMATCH[2]}
        fp3=${BASH_REMATCH[3]}
        nn=$(printf "%0*i" ${#fp2} $(( 10#$fp2-1 )) )
        tag=0
        nf="${fp1}${nn}.${fp3}"
        while [ -e "$nf" ]
        do
            tag+=1
            nf="${fp1}${nn}_${tag}.${fp3}"
        done
        echo "$old_file => $nf"
        mv "$old_file" "$nf"
    fi    
done