Bash script deleting my files, and editing files in subdirectories question Post: 302887120

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Top Forums Shell Programming and Scripting Bash script deleting my files, and editing files in subdirectories question Post 302887120 by Chubler_XL on Wednesday 5th of February 2014 06:37:58 PM

02-05-2014

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continue just resumes at the next iteration of the enclosing for loop. In this particular code that means stop processing the current file and start processing the next file.

The current code is less than ideal as it will rename existing renamed files and skip files.

see below:

Code:

$ touch abc_{0000..0003} more/img_{0000..0003} file{000..002}.jpg
$ ls
abc_0000  abc_0001  abc_0002  abc_0003  file000.jpg  file001.jpg  file002.jpg  more  script
$ ./script file jpg
./abc_0002 -> file003.jpg
./abc_0003 -> file004.jpg
./file000.jpg -> file005.jpg
./file001.jpg -> file006.jpg
./file002.jpg -> file007.jpg
./more/img_0000 -> file008.jpg
./more/img_0001 -> file009.jpg
./more/img_0002 -> file010.jpg
./more/img_0003 -> file011.jpg
$ ls
abc_0000  file003.jpg  file005.jpg  file007.jpg  file009.jpg  file011.jpg  script
abc_0001  file004.jpg  file006.jpg  file008.jpg  file010.jpg  more

This slight update should be a little safer.

Code:

(( $# == 2 )) || {
        printf 'Usage: %s <prefix> <ext>\n' "$0"
        exit 1
}

prefix=$1
type=$2
number=1

find . -type f -print | while read file; do

        # skip already processed files
        [[ "$file" = ./$prefix[0-9][0-9][0-9].$type ]] && continue

        # skip executable files (eg this script)
        [ -x "$file" ] && continue

        # find next unused sequence
        while true
        do
            printf -v new '%s%03d.%s' "$prefix" $((++number)) "$type"
            [ -f "$new" ] || break
        done

        mv "$file" "$new"
        echo "$file -> $new"

done

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LEARN ABOUT DEBIAN

mrename

MRENAME(1)						      General Commands Manual							MRENAME(1)

NAME

       mrename - program to rename files

SYNOPSIS

       mrename 'pattern' prefix [option]

DESCRIPTION

       This  manual  page  documents  briefly the mrename command.  This manual page was written for the Debian GNU/Linux distribution because the
       original program does not have a manual page.

       mrename is a tool for easy and automatic renaming of many files.  The 'pattern' is the pattern to search files to rename (quoted  to  avoid
       that  bash  resolve  it),  and prefix is the prefix that will be added to the name of each file. The two alternative options for copying or
       moving files in the new name are explained below.  All parameters are needed, and you have to stay and launch the script in the same direc-
       tory of the files to be renamed. The program should be able to write in this directory.

OPTIONS

       There are only the following three options.

       -c     The option -c will copy each file with the new filename.

       -m     The option -m will move each file in the new filename.

       -h     Display help.

EXAMPLE

       If  you	have  a  directory  with two jpeg images prof.jpg and forp.jpg and you want to add them a prefix like item0, item1 etc..  (that is
       item0prof.jpg, item1forp.jpg etc..) do this:

	  cd /path/to/the/images
	  mrename '*.jpg' item -c

       to copy each matching file into another with the new name

	  mrename '*.jpg' item -m

       to rename each file without keeping a copy with the previous name

Word-Wide-Web:
       http://alfalinux.sourceforge.net/mrename.php3

AUTHOR
:
       Giancarlo -rofus- Erra
       e-mail: rofus@mindless.com

       This manual page was written by Dr. Guenter Bechly <gbechly@debian.org>, for the Debian GNU/Linux system (but may be used by others). It is
       distributed under the GPL just like mrename itself.

								 October  22, 2000							MRENAME(1)