@echo off&setlocal enabledelayedexpansion
set key=05.07.06.
(for /f "delims=" %%a in (1.txt) do (
   set var=
   set "str=%%a%key%"
   for /l %%b in (1 1 100) do (
      if defined str set str=!str:*%key%=!
      for /f "delims=." %%c in ("!str!") do set var=!var!%%c.
   )
   echo;!var!
))>2.txt
pause
复制代码

@echo off&setlocal enabledelayedexpansion
set key=05.07.06.
(for /f "delims=" %%a in (1.txt) do (
   set var=
   set str=%%a
   for %%b in (@!str:%key%^=^ !) do (
      for /f "eol=@ delims=." %%c in ("%%b") do set var=!var!%%c.
   )
   echo;!var!
))>2.txt
pause
复制代码

grep -o "05\.07\.06\..." a.txt | gawk -F. "{printf $NF\".\"}" >b.txt
复制代码