cmd - Batch Files: How to concatenate each line in a text file? -


i have text file text on each line. able put each line in 1 long line along space. so, if text file has:

bob jack sam

i want result 

bob jack sam

below 2 methods working on stuck. in brackets [] means know syntax wrong; put there show thought process. commented sections me experimenting , have left them in case wants comment on / why do.

method 1:

@echo off setlocal enabledelayedexpansion set count=1 /f "tokens=* delims= usebackq" %%x in ("afile.txt") ( set var!count!=%%x %%a in (!count!) ( !var%%a! = !var%%a! & " " echo !var%%a! ) set /a count=!count!+1 echo !count! )  ::echo !var1! !var2! !var3! start "" firefox.exe !var%%a!-1  endlocal  ::echo "endlocal" %var1% %var2% %var3%

method 2:

@echo off setlocal enabledelayedexpansion set count=1 /f "tokens=* delims= usebackq" %%x in ("afile.txt") ( set var!count!=%%x call echo %%var!count!%%  set /a count=!count!+1 echo !count! )  ::echo !var1! !var2! !var3! start "" firefox.exe ^ [i = 1] [for !count! (] call echo %%var!count!%% & " " & " "^  endlocal  ::echo "endlocal" %var1% %var2% %var3%

if have 3 values, can directly retrieve them file

< input.txt (     set /p "line1="     set /p "line2="     set /p "line3=" ) set "var=%line1% %line2% %line3%" echo("%var%"

if don't know number of values, use for /f command read lines , concatenate contents variable. 

@echo off     setlocal enableextensions enabledelayedexpansion      set "var="     /f "usebackq delims=" %%a in ("input.txt") set "var=!var!%%a "     echo("%var%"

but if data can contain exclamation signs, delayed expansion state remove them (and text surounded them). avoid it, can used

@echo off     setlocal enableextensions disabledelayedexpansion      set "var="     /f "usebackq delims=" %%a in ("input.txt") (         setlocal enabledelayedexpansion         /f "tokens=* delims=¬" %%b in ("¬!var!") endlocal & set "var=%%b%%a "     )     echo("%var%"

where setlocal/endlocal , inner for used avoid problems ! character

or can try this

@echo off     setlocal enableextensions disabledelayedexpansion      /f "delims=" %%a in ('         "<nul cmd /q /c "for /f "usebackq delims=" %%z in ("input.txt"^) (set /p ".=%%z "^)""     ') set "var=%%a"      echo("%var%"

it runs cmd instance output input lines 1 output line (<nul set /p used ouput data without line feeds, data in same line). wrapped in for retrieve output inside variable


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