Rename folder name in bash

Question

I need to rename the following folders:

d_001_d  
d_001_h  
d_005_d  
d_005_h  
d_007_d  
d_007_h

In:

d_a_d  
d_a_h  
d_b_d  
d_b_h  
d_c_d  
d_c_h

So basically each code number correspond to a name(letter). I tried with the sed command and a for loop with an array but I'm not able to get exactly what I want.

Thanks for help

score 3 · Answer 1 · answered Mar 08 '12 at 09:34

3

bos:$ ls
d_001_d  d_001_h  d_005_d  d_005_h  d_007_d  d_007_h
bos:$ for x in * ; do mv $x $(echo $x | sed -e 's/001/a/;s/005/b/;s/007/c/') ; done
bos:$ ls
d_a_d  d_a_h  d_b_d  d_b_h  d_c_d  d_c_h

answered Mar 08 '12 at 09:34

bos

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You're welcome. If you like the answer, don't forget to "accept" it by clicking the check-icon to the left. – bos May 16 '12 at 12:27

score 1 · Answer 2 · answered Mar 08 '12 at 09:26

1

$ ls
d_001_d  d_001_h  d_005_d  d_005_h  d_007_d  d_007_h
$ ls | awk -F_ -v OFS=_ 'BEGIN{d["001"]="a"; d["005"]="b"; d["007"]="c"}; {old=$0; $2=d[$2]; printf("mv %s %s\n", old, $0)}' | bash
$ ls
d_a_d  d_a_h  d_b_d  d_b_h  d_c_d  d_c_h

answered Mar 08 '12 at 09:26

kev

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273
272

score 1 · Answer 3 · answered Mar 08 '12 at 11:18

If the directory names are all the same length, you can use this:

#!/bin/bash

for DIR in `ls */ -d`
do
    INDEX=${DIR:2:3}
    case $INDEX in
        001)
            LETTER="a"
            ;;
        005)
            LETTER="b"
            ;;
        007)
            LETTER="c"
            ;;
    esac
    mv "$DIR" ${DIR/$INDEX/$LETTER}
done

score 1 · Answer 4 · edited May 23 '17 at 12:12

Without hardcoding the number->char mappings:

chr() { [[ ${1} -lt 256 ]] || return 1; printf \\$(printf '%03o' $1); }

printf "%s\n" d_001_d  d_001_h  d_005_d  d_005_h  d_007_d  d_007_h | 
while read name; do 
  prefix=${name%%_*}
  suffix=${name##*_}
  [[ $name =~ ([0-9]+) ]] && num=$((96+10#${BASH_REMATCH[1]}))
  printf -v new_name "%s_%s_%s" $prefix $(chr $num) $suffix
  echo $new_name 
done

outputs

d_a_d
d_a_h
d_e_d
d_e_h
d_g_d
d_g_h

chr function courtesy this answer

score 1 · Answer 5 · answered Mar 08 '12 at 19:57

With the perl rename tool you can rename with regex:

rename -n 'y/[157]/[abc]/;s/00//' d_00?_?

d_001_d renamed as d_a_d
d_001_h renamed as d_a_h
d_005_d renamed as d_b_d
d_005_h renamed as d_b_h
d_007_d renamed as d_c_d
d_007_h renamed as d_c_h

Omit the -n if the test with -n(ot really) yields a fine result.

Rename folder name in bash

5 Answers5