Batch
From MohidWiki
Batch files are the original ms-dos scripting language. A batch file is a script that contains a list of ms-dos commands, with one command per line. When you try to execute the batch file, it will execute the ms-dos commands, one after another, waiting for each command to finish before starting the next one.
Contents
[hide]Examples
For
The following example will output each line of the text file to the stdout:
> FOR /F %i in (list.txt) DO @echo %~ni
The following example will allow to parse and edit the environment variables:
> for /F %i in ('dir /B /S *_1.dat') do @set fil=%i & copy /Y !fil! !fil:1=2!
If you want to write FOR loops in a batch file instead of the command line, then use %%i instead of %i.
To place the first line of a file into a variable:
> SET /P _MyVar=<MyFilename.txt
To place the last line of a file into a variable:
> FOR /F "tokens=*" %A IN (C:\boot.ini) DO SET TestVar=%A
Nested FOR Loops
> FOR /F %a IN (filelist.txt) DO (FOR /F %b IN (salinitytemperature.txt) DO echo %a %b)
Nested FOR loops encapsulated in a batch file
for /F %%a in (%1) do (
for /R %%b in (../*) do (
echo %%a
echo %%b
)
)
Misc
Escaping characters
<,|,> and % characters are special characters in dos. To escape them use the ^ character or a double %
> echo ^<example^> <example>
Displaying blank lines
Use command echo to display a blank line instead of its default status result
>echo.
Sample applications
Here's a combination with a batch file, that creates a clean copy of a MOHID simulation:
> copysimulation MySimulation
#copysimulation.bat content #Input argument %1 stands for simulation name @echo off set COPYHOME=C:\Program Files\2gif xcopy %1\*.* %1_copy /E /EXCLUDE:%COPYHOME%\exclui.txt perl %COPYHOME%/replace.pl 's/%2/\.\.\/\.\./g' * perl %COPYHOME%/replace.pl 's/\\/\//g' * @echo on
