make batch save %var% to .txt and retrieve %var% from .txt

i have this program that can run on the command line (goes faster that way) and i have a .bat that makes it easier to do this what i want is to save where it it up to when it exits using a .txt file so that it has an input file and
makes an output file that becomes the new input file and it goes on and on and on(until i stop it)
i would like to name the files 1(the 1st input),2,3,4,5,6,...

p.s no files are deleted in the process and i would like to have it run and when i want to stop i can and when i start it again it can go from where it left off (that is why i want to save a variable to a .txt file

p.s.s
the program is evolve 4.0 and can be found here http://www.stauffercom.com/evolve4/
some more info about the command line is here http://www.stauffercom.com/evolve4/evolve_batch.html

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i have this program that can run on the command line (goes faster that way) and i have a .bat that makes it easier to do this what i want is to save where it it up to when it exits using a .txt file so that it has an input file and
makes an output file that becomes the new input file and it goes on and on and on(until i stop it)
i would like to name the files 1(the 1st input),2,3,4,5,6,...

p.s no files are deleted in the process and i would like to have it run and when i want to stop i can and when i start it again it can go from where it left off (that is why i want to save a variable to a .txt file

p.s.s
the program is evolve 4.0 and can be found here http://www.stauffercom.com/evolve4/
some more info about the command line is here http://www.stauffercom.com/evolve4/evolve_batch.html

Ok...

echo %var%>filename.txt
rem The above line sends the contents of %var% to filename.txt
set /p var=<filename.txt
rem The above line recieves the contents of filename.txt and sets %var% as it.

Understand?

it is not writeing to the file but it is reading from it
this is my batch

Code: [Select]

@echo off
:setup0
echo do you want to start from where you left off[y\n]
set/p "cho=>"
if %cho%==y goto setup1
if %cho%==n goto setup2

:setup1
cls
echo time
set/p "time=>"
echo input
set /p in=<filename.txt
echo %out%
echo output
set/p "out=>"
echo are the time,input and output correct[y/n]
set/p "cho=>"
if %cho%==y goto evolve_b
if %cho%==n goto setup
%out%>filename.txt

:setup2
cls
echo time
set/p "time=>"
echo input
set/p "in=>"
echo output
set/p "out=>"
echo are the time,input and output correct[y/n]
set/p "cho=>"
if %cho%==y goto evolve_b
if %cho%==n goto setup

:evolve_b
cd C:\Program Files\Evolve
evolve_batch
evolve_batch s %time% %in%.evolve %out%.evolve

%out% is the variable i want to save and i want to make %in% have the value of %out% when i start it again

The easiest way to retrieve a value from a file is
Set /P in=<filename.ext

Note this will read only the first line of filename.ext and will put the value into %in%

Graham

it now reads from the file and saves to the file but not with the value of %out% instead it deletes all the text in the .txt

Code: [Select]

@echo off & setlocal
:setup0
if not exist save.txt goto setup2
echo do you want to start from where you left off[y\n]
set/p "cho=>"
if %cho%==y goto setup1
if %cho%==n goto setup2
goto:eof

:setup1
for /f "tokens=*" %%a in (save.txt) do %%a
set out
goto:eof

:setup2
set/p out=enter string:
echo variable out=%out% will be saved as save.txt
>save.txt echo set out=%out%
sample untested code

@ Reno

where do you put the code in the batch every time i answer yes to the "do you want to start from where you left off[y\n]"
it exits the batch

Code: [Select]

@echo off & setlocal
:setup0
if not exist save.txt goto setup3
echo do you want to start from where you left off[y\n]
set/p "cho=>"
if %cho%==y goto setup1
if %cho%==n goto setup2
goto:eof

:setup1
cls
for /f "tokens=*" %out% in (save.txt) do %out%
echo time
set/p "time=>"
echo input
echo %out%
echo %out%
echo output
set/p "out=>"
echo are the time,input and output correct[y/n]
set/p "cho=>"
if %cho%==y goto evolve_b
if %cho%==n goto setup

:setup2
cls
echo time
set/p "time=>"
echo input
set/p "in=>"
echo output
set/p "out=>"
echo are the time,input and output correct[y/n]
set/p "cho=>"
if %cho%==y goto evolve_b
if %cho%==n goto setup

:setup3
set/p out=enter string:
echo variable out=%out% will be saved as save.txt
>save.txt echo set out=%out%

:evolve_b
cd C:\Program Files\Evolve
evolve_batch
evolve_batch s %time% %out%.evolve %out%.evolve

i changed it a bit it would not fit

  i got headache
i only give example how to save a bunch of variables into a txt file and later retrieve the vars the next time batch is executed.

for /f "tokens=*" %out% in (save.txt) do %out%    <--- incorrect for loop syntax
:setup1  <--- let's say this is sort of a "batch function" in OOP term, you have to put goto:eof at the end of each function except the last one, or the the next line of code will be executed

Code: [Select]

:evolve_b
cd C:\Program Files\Evolve
evolve_batch
evolve_batch s %time% %out%.evolve %out%.evolvewhat are the value of var time,out,evolve,out on the following 2 condition:
1.do you want to start from where you left off[y\n]  Y
2.do you want to start from where you left off[y\n]  N

it would be nice if you can gives example as i don't quite understand the problem.

what are the value of var time,out,evolve,out on the following 2 condition:
1.do you want to start from where you left off[y\n]  Y
2.do you want to start from where you left off[y\n]  N

1) time is hours(h),minutes(m),seconds(s) or steps(u)
      so when i type in the time it is
45s(seconds)
30m(minutes)
24h(hours)
4000u(steps)

in is the starting conditions of the simulation (in this case it is the previous out file)

.evolve is not a variable it is just the files extension

out is the output file


2)in this case i set the varables to anything i want to.

hmm, maybe something like below works??

Code: [Select]

@echo off & setlocal

:setup
set/p c=do you want to start from where you left off [y\n] :
echo.%c%|findstr/ix "y n yes no">nul || goto:setup

if /i %c:~,1%.==y. for /f "tokens=*" %%a in (save.txt) do set %%a
if /i %c:~,1%.==n. (
set/p var_time=time :
set/p var_in=input :
set/p var_out=output :
set var_>save.txt
)

:validateYesNo
echo evolve_batch s %var_time% %var_in%.evolve %var_out%.evolve
set/p c=are the time,input and output correct [y/n] :
echo.%c%|findstr/ix "y n yes no">nul || goto:validateYesNo

if /i %c:~,1%.==n. goto:setup
cd C:\Program Files\Evolve
evolve_batch
evolve_batch s %var_time% %var_in%.evolve %var_out%.evolve

wow Reno
that one looked very good but i wanted it to set %var_in% to what %var_out% was last time

Code: [Select]

@echo off & setlocal & set c=n

if not exist save.txt goto skip
:setup
set c=&set/p c=do you want to start from where you left off [y\n] :
echo.%c%|findstr/ix "y n yes no">nul || goto:setup

:skip
if /i %c:~,1%.==y. for /f "tokens=*" %%a in (save.txt) do set %%a
if /i %c:~,1%.==n. (
set/p var_time=time :
set/p var_in=input :
)
set/p var_out=output :

:validateYesNo
echo evolve_batch s %var_time% %var_in%.evolve %var_out%.evolve
set c=&set/p c=are the time,input and output correct [y/n] :
echo.%c%|findstr/ix "y n yes no">nul || goto:validateYesNo

if /i %c:~,1%.==n. goto:setup
 >save.txt echo var_time=%var_time%
>>save.txt echo var_in=%var_out%
cd C:\Program Files\Evolve
evolve_batch
evolve_batch s %var_time% %var_in%.evolve %var_out%.evolve
CODE UPDATED. CHECK POST #11

i wanted it to set %var_in% to what %var_out% was last time it was ran so

//first run
%var_in%=1
%var_out%=2
//second run
%var_in%=2(from save.txt{so i don't need to enter this})
%var_out%=3
//third run
%var_in%=3(again from save.txt)
%var_out%=4

and so on

perfect  thank you so much