Get Filename from Filepath - batch-file

I want to get the filename from a filepath.
My problem is, that I found many solutions for handling it with input via parameters.
But I want to use a userinput instead of a parameter.
The soultion for parameters is:
%~nxI //I could be number for the parameter count
My script actually looks like this:
#echo off
set /p path=Film:
echo %path2%
pause
Now I want to get the filename + extension from %path% and write it to %path2%.
Could anyone help me please?

set /p x=Film:
echo %x%
for %%F in (%x%) do set q=%%~nF
echo %q%
...and for Pete's sake do not prompt the user to set the PATH variable! use some other variable name!

an alternative, instead of using FOR, that may be useful in some situations, is to substitute the variable passing the values as parameters in a CALL.
call :extractfn %x% q
echo %q%
goto :eof
:extractfn
set %2=%~n1
goto :eof

Related

set /p not taking environment variables

I am trying to match a batch script to do this tutorial automatically, for any system.
#echo off
for /f "tokens=4* delims= " %%A in ('reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders" /v "My Pictures"') do (set loc=%%A %%B)
set loc=%loc%\Spotlight
set /p loc=Location for images (default - "%loc%") [use %%loc%% for default]?:
start robocopy "%localappdata%\Packages\Microsoft.Windows.ContentDeliveryManager_cw5n1h2txyewy\LocalState\Assets" "%temp%\spotlight"
ren %temp%\spotlight\*.* *.jpg
robocopy "%temp%\spotlight" "%loc%"
start %SystemRoot%\explorer.exe %loc%
However, if I try typing %loc%\Spotlight2, it places it in the Desktop\%loc%\spotlight2 (desktop is the current working directory).
Is there a way to make set /p take environment variables?
the usual way to enter a default is an empty input (keeps predefined varable unchanged). But there is a way to enable a variable input. Try the following and answer the question with %windir%
#echo off
setlocal
set x=%username%
set /p "x=enter value ([ENTER] for default: "%x%") "
call set x=%x%
echo %x%
The trick is to expand the variable twice by using another layer of parsing (whith call).
SET /P is basically just an input routine. There is no documented way to have it do further evaluation, and I doubt one exists.
One could try to get CMD to evaluate the contents of a variable to expand any variables in the contents -- I have seem kludges to do this. However, I don't think that is a good way to do what you want.
I think you would be better off using something easier to type, and testing for that explicitly. For example:
set loc=%loc%\Spotlight
echo Enter location for images, or just press [ENTER] to use the default.
echo Default location: %loc%
set userloc=*
set /p userloc=Location?
if not "%userloc%"=="*" set loc=%userloc%
There's a way to do what you want without default locations! It involves variable manipulation:
...
setlocal enabledelayedexpansion
set loc=%loc%\Spotlight
set default=%loc%
set /p "loc=Location [%loc%] for default: "
set out=!loc:%%loc%%=%default%!
echo %out%
...
Hence, typing %loc% replaces it with the original value of loc.
I tested this by typing %loc%\s and it performed as expected. In terms of it being the correct directory, thats to do with how you set the value of loc prior to this code.

Assigning a variable inside if loop : Windows Bat script

I'm trying to write a bat script and faced the following issue.
Below is the snippet with which the issue is dealt with.
setlocal enabledelayedexpansion enableextensions
#echo off
#echo:
echo Select an option:
echo *****************
#echo:
echo 1) process 2gen files
#echo:
echo 2) process 3gen files
#echo:
set /p option=Enter option number : %=%
set fileName=nil
echo %option%
if %option% == 1 (
set fileName = 2gen
echo !fileName!
)
echo !fileName!
The output of this bat script is as follows:
Select an option:
*****************
1) process 2gen files
2) process 3gen files
Enter option number : 1
1
nil
nil
i'm expecting the echo for fileName to have value 2gen but it is still printing nil
In my first attempt, i didn't use the setlocal enabledelayedexpansion enableextensions and !fileName! (instead used %fileName%)
After searching for solution enabled the delayed expansion. But still couldn't get what the exact mistake is.
Also the OS version being used is Windows 7 64 bit
Please help me in pointing out the mistake.
Thanks!
set fileName = 2gen sets a variable named filename<space> to a value <space>2gen. Get rid of the spaces. Even better, use this recommended syntax:
set "variable=value"
to avoid unintended trailing spaces.
(of course you could use echo !filename !...)

input a variable name and display - BATCH FILE

I wanted the user insert a variable and then be displayed with echo It would be something like %%var%%
A variable inside another variable
set var=value
set x=var
setlocal enableDelayedExpansion
echo !%x%!
...
endlocal
This should outperfrom the call approach.
I hope I got your question right. You need an additional parse-phase. this can be done with call:
set var=value
set x=var
call echo %%%x%%%
REM on commandline: call echo %%x%%
(yes, that's ugly, but it works)

Batch File - for /F loop - read multiple Variables

I need to load different numeric values from external config.txt file and write them to %variables% in batch file. Example - config.txt file should looks as following:
====================
Setting1=1
Setting2=0
Setting3=1
====================
I need to assign first value (1) lets say into variable %1%, second value (0) into variable %2% and so on.
Could you please help me how to do this?
Thanks.
try this:
#echo off&setlocal
for /f %%i in (config.txt) do set "%%i" 2>nul
set "setting"
Do you know how many variables there will be? If you don't then go with Endoro's answer. If you do know how many variables there will be and you want to set them to a custom name you could do this:
#echo off
< config.txt (
set /p var1=
set /p var2=
set /p var3=
)
echo %var1%
echo %var2%
echo %var3%
pause
You shouldn't use %1% or plain numbers for variables, it can mess it up.
If config.txt had those '=' signs then you would have to skip add two more lines for the var's.
The reason you should use this for custom variables is because you could name the variables by there specific meaning which may make it easier to remember when coding.
Ex.
#echo off
< config.txt (
set /p name=
set /p pizza=
set /p car=
)
echo %name%
echo %pizza%
echo %car%
pause

Batch file include external file for variables

I have a batch file and I want to include an external file containing some variables (say configuration variables). Is it possible?
Note: I'm assuming Windows batch files as most people seem to be unaware that there are significant differences and just blindly call everything with grey text on black background DOS. Nevertheless, the first variant should work in DOS as well.
Executable configuration
The easiest way to do this is to just put the variables in a batch file themselves, each with its own set statement:
set var1=value1
set var2=value2
...
and in your main batch:
call config.cmd
Of course, that also enables variables to be created conditionally or depending on aspects of the system, so it's pretty versatile. However, arbitrary code can run there and if there is a syntax error, then your main batch will exit too. In the UNIX world this seems to be fairly common, especially for shells. And if you think about it, autoexec.bat is nothing else.
Key/value pairs
Another way would be some kind of var=value pairs in the configuration file:
var1=value1
var2=value2
...
You can then use the following snippet to load them:
for /f "delims=" %%x in (config.txt) do (set "%%x")
This utilizes a similar trick as before, namely just using set on each line. The quotes are there to escape things like <, >, &, |. However, they will themselves break when quotes are used in the input. Also you always need to be careful when further processing data in variables stored with such characters.
Generally, automatically escaping arbitrary input to cause no headaches or problems in batch files seems pretty impossible to me. At least I didn't find a way to do so yet. Of course, with the first solution you're pushing that responsibility to the one writing the config file.
If the external configuration file is also valid batch file, you can just use:
call externalconfig.bat
inside your script. Try creating following a.bat:
#echo off
call b.bat
echo %MYVAR%
and b.bat:
set MYVAR=test
Running a.bat should generate output:
test
Batch uses the less than and greater than brackets as input and output pipes.
>file.ext
Using only one output bracket like above will overwrite all the information in that file.
>>file.ext
Using the double right bracket will add the next line to the file.
(
echo
echo
)<file.ext
This will execute the parameters based on the lines of the file. In this case, we are using two lines that will be typed using "echo". The left bracket touching the right parenthesis bracket means that the information from that file will be piped into those lines.
I have compiled an example-only read/write file. Below is the file broken down into sections to explain what each part does.
#echo off
echo TEST R/W
set SRU=0
SRU can be anything in this example. We're actually setting it to prevent a crash if you press Enter too fast.
set /p SRU=Skip Save? (y):
if %SRU%==y goto read
set input=1
set input2=2
set /p input=INPUT:
set /p input2=INPUT2:
Now, we need to write the variables to a file.
(echo %input%)> settings.cdb
(echo %input2%)>> settings.cdb
pause
I use .cdb as a short form for "Command Database". You can use any extension.
The next section is to test the code from scratch. We don't want to use the set variables that were run at the beginning of the file, we actually want them to load FROM the settings.cdb we just wrote.
:read
(
set /p input=
set /p input2=
)<settings.cdb
So, we just piped the first two lines of information that you wrote at the beginning of the file (which you have the option to skip setting the lines to check to make sure it's working) to set the variables of input and input2.
echo %input%
echo %input2%
pause
if %input%==1 goto newecho
pause
exit
:newecho
echo If you can see this, good job!
pause
exit
This displays the information that was set while settings.cdb was piped into the parenthesis. As an extra good-job motivator, pressing enter and setting the default values which we set earlier as "1" will return a good job message.
Using the bracket pipes goes both ways, and is much easier than setting the "FOR" stuff. :)
So you just have to do this right?:
#echo off
echo text shizzle
echo.
echo pause^>nul (press enter)
pause>nul
REM writing to file
(
echo XD
echo LOL
)>settings.cdb
cls
REM setting the variables out of the file
(
set /p input=
set /p input2=
)<settings.cdb
cls
REM echo'ing the variables
echo variables:
echo %input%
echo %input2%
pause>nul
if %input%==XD goto newecho
DEL settings.cdb
exit
:newecho
cls
echo If you can see this, good job!
DEL settings.cdb
pause>nul
exit
:: savevars.bat
:: Use $ to prefix any important variable to save it for future runs.
#ECHO OFF
SETLOCAL
REM Load variables
IF EXIST config.txt FOR /F "delims=" %%A IN (config.txt) DO SET "%%A"
REM Change variables
IF NOT DEFINED $RunCount (
SET $RunCount=1
) ELSE SET /A $RunCount+=1
REM Display variables
SET $
REM Save variables
SET $>config.txt
ENDLOCAL
PAUSE
EXIT /B
Output:
$RunCount=1
$RunCount=2
$RunCount=3
The technique outlined above can also be used to share variables among multiple batch files.
Source: http://www.incodesystems.com/products/batchfi1.htm
Kinda old subject but I had same question a few days ago and I came up with another idea (maybe someone will still find it usefull)
For example you can make a config.bat with different subjects (family, size, color, animals) and apply them individually in any order anywhere you want in your batch scripts:
#echo off
rem Empty the variable to be ready for label config_all
set config_all_selected=
rem Go to the label with the parameter you selected
goto :config_%1
REM This next line is just to go to end of file
REM in case that the parameter %1 is not set
goto :end
REM next label is to jump here and get all variables to be set
:config_all
set config_all_selected=1
:config_family
set mother=Mary
set father=John
set sister=Anna
rem This next line is to skip going to end if config_all label was selected as parameter
if not "%config_all_selected%"=="1" goto :end
:config_test
set "test_parameter_all=2nd set: The 'all' parameter WAS used before this echo"
if not "%config_all_selected%"=="1" goto :end
:config_size
set width=20
set height=40
if not "%config_all_selected%"=="1" goto :end
:config_color
set first_color=blue
set second_color=green
if not "%config_all_selected%"=="1" goto :end
:config_animals
set dog=Max
set cat=Miau
if not "%config_all_selected%"=="1" goto :end
:end
After that, you can use it anywhere by calling fully with 'call config.bat all' or calling only parts of it (see example bellow)
The idea in here is that sometimes is more handy when you have the option not to call everything at once. Some variables maybe you don't want to be called yet so you can call them later.
Example test.bat
#echo off
rem This is added just to test the all parameter
set "test_parameter_all=1st set: The 'all' parameter was NOT used before this echo"
call config.bat size
echo My birthday present had a width of %width% and a height of %height%
call config.bat family
call config.bat animals
echo Yesterday %father% and %mother% surprised %sister% with a cat named %cat%
echo Her brother wanted the dog %dog%
rem This shows you if the 'all' parameter was or not used (just for testing)
echo %test_parameter_all%
call config.bat color
echo His lucky color is %first_color% even if %second_color% is also nice.
echo.
pause
Hope it helps the way others help me in here with their answers.
A short version of the above:
config.bat
#echo off
set config_all_selected=
goto :config_%1
goto :end
:config_all
set config_all_selected=1
:config_family
set mother=Mary
set father=John
set daughter=Anna
if not "%config_all_selected%"=="1" goto :end
:config_size
set width=20
set height=40
if not "%config_all_selected%"=="1" goto :end
:end
test.bat
#echo off
call config.bat size
echo My birthday present had a width of %width% and a height of %height%
call config.bat family
echo %father% and %mother% have a daughter named %daughter%
echo.
pause
Good day.
The best option according to me is to have key/value pairs file as it could be read from other scripting languages.
Other thing is I would prefer to have an option for comments in the values file - which can be easy achieved with eol option in for /f command.
Here's the example
values file:
;;;;;; file with example values ;;;;;;;;
;; Will be processed by a .bat file
;; ';' can be used for commenting a line
First_Value=value001
;;Do not let spaces arround the equal sign
;; As this makes the processing much easier
;; and reliable
Second_Value=%First_Value%_test
;;as call set will be used in reading script
;; refering another variables will be possible.
Third_Value=Something
;;; end
Reading script:
#echo off
:::::::::::::::::::::::::::::
set "VALUES_FILE=E:\scripts\example.values"
:::::::::::::::::::::::::::::
FOR /F "usebackq eol=; tokens=* delims=" %%# in (
"%VALUES_FILE%"
) do (
call set "%%#"
)
echo %First_Value% -- %Second_Value% -- %Third_Value%
While trying to use the method with excutable configuration
I noticed that it may work or may NOT work
depending on where in the script is located the call:
call config.cmd
I know it doesn't make any sens, but for me it's a fact.
When "call config.cmd" is located at the top of the
script, it works, but if further in the script it doesn't.
By doesn't work, I mean the variable are not set un the calling script.
Very very strange !!!!

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