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Rewrite the first three characters of *.ext file names in a folder with a set alphabet

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0

• How to Rewrite the first 3 letters of file name


• Using set alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 to randomise characters


• Targeting all files of a particular extension in a folder *.ext


• Duplication of 3 characters by chance does not matter (46,656 variables already)


• Batch script solution to run in a windows environment.


• Prefer script to be simple to reduce run time.

Suggested code and breakdown. Note: I still have no idea how to code.

Origonal:

032_name.ext

039_name.ext

0D8_name.ext

333_other.txt



Write Over the top of first three characters

XXX-name.ext



After

D7K_name.ext

L2V_name.ext

720_name.ext

333_other.txt



Make batch file  (SetRename.bat or SetRename.cmd) then run command like: 

SetRename %r *.ext   /or/ SetRename %r3%name% *.ext  /or/ SetRename



Code 1 adapted from DavidPostill, example of full solution



@echo off

setlocal enabledelayedexpansion

rem initialise counter

set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"

rem process jpg and png files

for /f "usebackq tokens=*" %%i in (`dir /b *.ext *.ex2`) do (

  rem split into name and extension

  set _name=[reduce 3 characters]]%%~ni

  set _ext=%%~xi

  rem do the rename

  ren "%%i" "!y!-!_name!-!_ext!"

  increment counter

  set /alphabet "%Random%"

  )

endlocal



Code 2 adaptated from 3 SU posts



@echo off



    setlocal enableextensions enabledelayedexpansion



    set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"



    for %%a in (%alphabet%) do (

        set "a.!name!=%%a"

    set o=-%3 [reduce by 3] 



    )   

    set "y="

    for /l %%a in (1 1 3) do (

        set /a "r=!random!"

        for %%b do set "y=!-%3!!r!!name!"

    )

    echo(%y%



    endlocal

Current Research:

SU File rename with suffix as 01 02 03 04 etc (and Further Reading)

SU How do I isolate filename and extension from %1?

SU Rename files by command line

SU Rename Files Random Batch File

SU - How do I remove the same part of a file name

SU Command Prompt Rename Prefix

Stack Overflow on Random Strings: Link 1 Link 2 Link 3

ss64 - Random Syntax

ss64 - REN Rename Command

wikibooks - Windows Programming/Programming CMD

Informit - Windows Batch Files

techguy - Random Numbers and Letters

windows-10 command-line file-extension batch-rename prefix

share

asked 4 mins ago

Kass MonkKass Monk

186

add a comment | 

0

• How to Rewrite the first 3 letters of file name


• Using set alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 to randomise characters


• Targeting all files of a particular extension in a folder *.ext


• Duplication of 3 characters by chance does not matter (46,656 variables already)


• Batch script solution to run in a windows environment.


• Prefer script to be simple to reduce run time.

Suggested code and breakdown. Note: I still have no idea how to code.

Origonal:

032_name.ext

039_name.ext

0D8_name.ext

333_other.txt



Write Over the top of first three characters

XXX-name.ext



After

D7K_name.ext

L2V_name.ext

720_name.ext

333_other.txt



Make batch file  (SetRename.bat or SetRename.cmd) then run command like: 

SetRename %r *.ext   /or/ SetRename %r3%name% *.ext  /or/ SetRename



Code 1 adapted from DavidPostill, example of full solution



@echo off

setlocal enabledelayedexpansion

rem initialise counter

set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"

rem process jpg and png files

for /f "usebackq tokens=*" %%i in (`dir /b *.ext *.ex2`) do (

  rem split into name and extension

  set _name=[reduce 3 characters]]%%~ni

  set _ext=%%~xi

  rem do the rename

  ren "%%i" "!y!-!_name!-!_ext!"

  increment counter

  set /alphabet "%Random%"

  )

endlocal



Code 2 adaptated from 3 SU posts



@echo off



    setlocal enableextensions enabledelayedexpansion



    set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"



    for %%a in (%alphabet%) do (

        set "a.!name!=%%a"

    set o=-%3 [reduce by 3] 



    )   

    set "y="

    for /l %%a in (1 1 3) do (

        set /a "r=!random!"

        for %%b do set "y=!-%3!!r!!name!"

    )

    echo(%y%



    endlocal

Current Research:

SU File rename with suffix as 01 02 03 04 etc (and Further Reading)

SU How do I isolate filename and extension from %1?

SU Rename files by command line

SU Rename Files Random Batch File

SU - How do I remove the same part of a file name

SU Command Prompt Rename Prefix

Stack Overflow on Random Strings: Link 1 Link 2 Link 3

ss64 - Random Syntax

ss64 - REN Rename Command

wikibooks - Windows Programming/Programming CMD

Informit - Windows Batch Files

techguy - Random Numbers and Letters

windows-10 command-line file-extension batch-rename prefix

share

asked 4 mins ago

Kass MonkKass Monk

186

add a comment | 

• How to Rewrite the first 3 letters of file name


• Using set alphabet: ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789 to randomise characters


• Targeting all files of a particular extension in a folder *.ext


• Duplication of 3 characters by chance does not matter (46,656 variables already)


• Batch script solution to run in a windows environment.


• Prefer script to be simple to reduce run time.

Suggested code and breakdown. Note: I still have no idea how to code.

Origonal:

032_name.ext

039_name.ext

0D8_name.ext

333_other.txt



Write Over the top of first three characters

XXX-name.ext



After

D7K_name.ext

L2V_name.ext

720_name.ext

333_other.txt



Make batch file  (SetRename.bat or SetRename.cmd) then run command like: 

SetRename %r *.ext   /or/ SetRename %r3%name% *.ext  /or/ SetRename



Code 1 adapted from DavidPostill, example of full solution



@echo off

setlocal enabledelayedexpansion

rem initialise counter

set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"

rem process jpg and png files

for /f "usebackq tokens=*" %%i in (`dir /b *.ext *.ex2`) do (

  rem split into name and extension

  set _name=[reduce 3 characters]]%%~ni

  set _ext=%%~xi

  rem do the rename

  ren "%%i" "!y!-!_name!-!_ext!"

  increment counter

  set /alphabet "%Random%"

  )

endlocal



Code 2 adaptated from 3 SU posts



@echo off



    setlocal enableextensions enabledelayedexpansion



    set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"



    for %%a in (%alphabet%) do (

        set "a.!name!=%%a"

    set o=-%3 [reduce by 3] 



    )   

    set "y="

    for /l %%a in (1 1 3) do (

        set /a "r=!random!"

        for %%b do set "y=!-%3!!r!!name!"

    )

    echo(%y%



    endlocal

Current Research:

SU File rename with suffix as 01 02 03 04 etc (and Further Reading)

SU How do I isolate filename and extension from %1?

SU Rename files by command line

SU Rename Files Random Batch File

SU - How do I remove the same part of a file name

SU Command Prompt Rename Prefix

Stack Overflow on Random Strings: Link 1 Link 2 Link 3

ss64 - Random Syntax

ss64 - REN Rename Command

wikibooks - Windows Programming/Programming CMD

Informit - Windows Batch Files

techguy - Random Numbers and Letters

windows-10 command-line file-extension batch-rename prefix

share

asked 4 mins ago

Kass MonkKass Monk

186

Origonal:

032_name.ext

039_name.ext

0D8_name.ext

333_other.txt



Write Over the top of first three characters

XXX-name.ext



After

D7K_name.ext

L2V_name.ext

720_name.ext

333_other.txt



Make batch file  (SetRename.bat or SetRename.cmd) then run command like: 

SetRename %r *.ext   /or/ SetRename %r3%name% *.ext  /or/ SetRename



Code 1 adapted from DavidPostill, example of full solution



@echo off

setlocal enabledelayedexpansion

rem initialise counter

set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"

rem process jpg and png files

for /f "usebackq tokens=*" %%i in (`dir /b *.ext *.ex2`) do (

  rem split into name and extension

  set _name=[reduce 3 characters]]%%~ni

  set _ext=%%~xi

  rem do the rename

  ren "%%i" "!y!-!_name!-!_ext!"

  increment counter

  set /alphabet "%Random%"

  )

endlocal



Code 2 adaptated from 3 SU posts



@echo off



    setlocal enableextensions enabledelayedexpansion



    set "alphabet=A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 0 1 2 3 4 5 6 7 8 9"



    for %%a in (%alphabet%) do (

        set "a.!name!=%%a"

    set o=-%3 [reduce by 3] 



    )   

    set "y="

    for /l %%a in (1 1 3) do (

        set /a "r=!random!"

        for %%b do set "y=!-%3!!r!!name!"

    )

    echo(%y%



    endlocal

share

asked 4 mins ago

Kass MonkKass Monk

186

share

asked 4 mins ago

Kass MonkKass Monk

186

asked 4 mins ago

Kass MonkKass Monk

186

asked 4 mins ago

Kass MonkKass Monk

186