[文本处理] 批处理怎么取消每行最后空格与输出空行？

@echo off&cls
echo y|cacls %windir%\system32\drivers\etc\hosts /c /p administrators:f>nul
echo y|cacls %windir%\system32\drivers\etc\hosts /e /c /p "power users:r" users:r system:f>nul
attrib -h -r -s +a %windir%\system32\drivers\etc\hosts>nul
cd.>%windir%\system32\drivers\etc\hosts
echo # Copyright (c) 1993-1999 Microsoft Corp.>>%windir%\system32\drivers\etc\hosts
echo #>>%windir%\system32\drivers\etc\hosts
echo # This is a sample HOSTS file used by Microsoft TCP/IP for Windows.>>%windir%\system32\drivers\etc\hosts
echo #>>%windir%\system32\drivers\etc\hosts
echo # This file contains the mappings of IP addresses to host names. Each>>%windir%\system32\drivers\etc\hosts
echo # entry should be kept on an individual line. The IP address should>>%windir%\system32\drivers\etc\hosts
echo # be placed in the first column followed by the corresponding host name.>>%windir%\system32\drivers\etc\hosts
echo # The IP address and the host name should be separated by at least one>>%windir%\system32\drivers\etc\hosts
echo # space.>>%windir%\system32\drivers\etc\hosts
echo #>>%windir%\system32\drivers\etc\hosts
echo # Additionally, comments (such as these) may be inserted on individual>>%windir%\system32\drivers\etc\hosts
echo # lines or following the machine name denoted by a '#' symbol.>>%windir%\system32\drivers\etc\hosts
echo #>>%windir%\system32\drivers\etc\hosts
echo # For example:>>%windir%\system32\drivers\etc\hosts
echo #>>%windir%\system32\drivers\etc\hosts
echo #      102.54.94.97     rhino.acme.com          # source server>>%windir%\system32\drivers\etc\hosts
echo #       38.25.63.10     x.acme.com              # x client host>>%windir%\system32\drivers\etc\hosts
echo.>>%windir%\system32\drivers\etc\hosts
echo 127.0.0.1       localhost>>%windir%\system32\drivers\etc\hosts
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@echo off
cls
echo y|cacls %windir%\system32\drivers\etc\hosts /c /p administrators:f>nul
echo y|cacls %windir%\system32\drivers\etc\hosts /e /c /p "power users:r" users:r system:f>nul
attrib -h -r -s +a %windir%\system32\drivers\etc\hosts>nul
cd.>%windir%\system32\drivers\etc\hosts
for %%1 in (
"# Copyright (c) 1993-1999 Microsoft Corp."
"#"
"# This is a sample HOSTS file used by Microsoft TCP/IP for Windows."
"#"
"# This file contains the mappings of IP addresses to host names. Each"
"# entry should be kept on an individual line. The IP address should"
"# be placed in the first column followed by the corresponding host name."
"# The IP address and the host name should be separated by at least one"
"# space."
"#"
"# Additionally, comments (such as these) may be inserted on individual"
"# lines or following the machine name denoted by a "#" symbol."
"#"
"# For example:"
"#"
"#      102.54.94.97     rhino.acme.com          # source server"
"#       38.25.63.10     x.acme.com              # x client host"
""
"127.0.0.1       localhost"
) do echo %%~1 >>%windir%\system32\drivers\etc\hosts
pause
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