[Foreigner]

Anufriev, Ну тогда через задницу, выбирай:

Код:

@echo off
setlocal

for /f "tokens=*" %%i in (1.txt) do call:1 %%i
goto:eof

:1
for %%i in (%*) do set "val=%%i"

cd.>"%tmp%\%val%"

for /f "tokens=*" %%i in ('dir /b /l "%tmp%\%val%"') do 1>>2.txt echo %%i

del "%tmp%\%val%"

Код:

@echo off
setlocal

for /f "tokens=*" %%i in (1.txt) do call:1 %%i
goto:eof

:1
for %%i in (%*) do set "val=%%i"

set val=%val:A=a%
set val=%val:B=b%
...
set val=%val:Z=z%

1>>2.txt echo %val%

ЗЫ. PowerShell тоже "низя"?

Код:

(get-content 1.txt).foreach({ ($_ -split '\s')[-1].tolower() }) | set-content 2.txt # для posh 4+
get-content 1.txt | foreach { ($x = $_ -split '\s')[$x.length-1].tolower() } | set-content 2.txt  # для posh 3-