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Make a backup file: Difference between revisions
→{{header|AWK}}
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exit(0)
}
</lang>
=={{Header|Batch File}}==
<lang dos>
@echo off
setlocal enabledelayedexpansion
:: Takes file input as param #1
set "filePath=%~1"
set "fileName=%~xn1"
:: Save file contents of original file to array line[n]
set i=0
for /f "usebackq delims=" %%a in ("%filePath%") do (
set /a i+=1
set "line[!i!]=%%a"
)
:: Rename original file with .backup extension
ren "%filePath%" "%fileName%.backup"
:: Rewrite a new file with the name of the original
echo !line[1]!>"%filePath%"
for /l %%i in (2,1,%i%) do echo !line[%%i]!>>"%filePath%"
</lang>
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