Revisions to How to receive a parameter in a batch file

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Source Link

edited May 23, 2017 at 12:41

1

Batch interpreter parses command line in slightly different manner than pure command line parser (read answers to another question at StackOverflow answers to another question at StackOverflow):

command line: to avoid expanding %MYAPPSDIR% by command line interpreter, the % percent character should be escaped by the standard CLI escape character (^ caret): ^%MYAPPSDIR^% or ^%1;
.bat script: to avoid expanding %MYAPPSDIR% or %1 by batch interpreter, the % percent character should be doubled as follows: %%MYAPPSDIR%% and %%1, respectively.

To distinguish parameters supplied to your batch script:

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:.exe=%"
)
if "%par%"=="%par1%" (
  echo .exe not present
) else (
  echo .exe present
)

or (maybe better)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:~-4%"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

or (maybe the best)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%~x1"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

Resources (required reading):

(command reference) An A-Z Index of the Windows CMD command line
(additional particularities) Windows CMD Shell Command Line Syntax
(%~1 etc. special page) Command Line arguments (Parameters)
(%par1:~-4% substring) Variables: extract part of a variable
(%par1:.exe=%) Variable Edit/Replace

Batch interpreter parses command line in slightly different manner than pure command line parser (read answers to another question at StackOverflow):

command line: to avoid expanding %MYAPPSDIR% by command line interpreter, the % percent character should be escaped by the standard CLI escape character (^ caret): ^%MYAPPSDIR^% or ^%1;
.bat script: to avoid expanding %MYAPPSDIR% or %1 by batch interpreter, the % percent character should be doubled as follows: %%MYAPPSDIR%% and %%1, respectively.

To distinguish parameters supplied to your batch script:

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:.exe=%"
)
if "%par%"=="%par1%" (
  echo .exe not present
) else (
  echo .exe present
)

or (maybe better)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:~-4%"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

or (maybe the best)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%~x1"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

Resources (required reading):

(command reference) An A-Z Index of the Windows CMD command line
(additional particularities) Windows CMD Shell Command Line Syntax
(%~1 etc. special page) Command Line arguments (Parameters)
(%par1:~-4% substring) Variables: extract part of a variable
(%par1:.exe=%) Variable Edit/Replace

Batch interpreter parses command line in slightly different manner than pure command line parser (read answers to another question at StackOverflow):

command line: to avoid expanding %MYAPPSDIR% by command line interpreter, the % percent character should be escaped by the standard CLI escape character (^ caret): ^%MYAPPSDIR^% or ^%1;
.bat script: to avoid expanding %MYAPPSDIR% or %1 by batch interpreter, the % percent character should be doubled as follows: %%MYAPPSDIR%% and %%1, respectively.

To distinguish parameters supplied to your batch script:

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:.exe=%"
)
if "%par%"=="%par1%" (
  echo .exe not present
) else (
  echo .exe present
)

or (maybe better)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:~-4%"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

or (maybe the best)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%~x1"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

Resources (required reading):

(command reference) An A-Z Index of the Windows CMD command line
(additional particularities) Windows CMD Shell Command Line Syntax
(%~1 etc. special page) Command Line arguments (Parameters)
(%par1:~-4% substring) Variables: extract part of a variable
(%par1:.exe=%) Variable Edit/Replace

added 1428 characters in body

Source Link

edited Jun 25, 2015 at 9:25

JosefZ

13.4k
5
40
72

Batch interpreter parses command line in slightly different manner than pure command line parser (read answers to another question at StackOverflow):

command line: to avoid expanding %MYAPPSDIR% by command line interpreter, the % percent character should be escaped by the standard CLI escape character (^ caret): ^%MYAPPSDIR^% or ^%1;
.bat script: to avoid expanding %MYAPPSDIR% or %1 by batch interpreter, the % percent character should be doubled as follows: %%MYAPPSDIR%% and %%1, respectively.

To distinguish parameters supplied to your batch script:

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:.exe=%"
)
if "%par%"=="%par1%" (
  echo .exe not present
) else (
  echo .exe present
)

or (maybe better)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:~-4%"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

or (maybe the best)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%~x1"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

Resources (required reading):

(command reference) An A-Z Index of the Windows CMD command line

(additional particularities) Windows CMD Shell Command Line Syntax

(%~1 etc. special page) Command Line arguments (Parameters)

(%par1:~-4% substring) Variables: extract part of a variable

(%par1:.exe=%) Variable Edit/Replace

Batch interpreter parses command line in slightly different manner than pure command line parser (read answers to another question at StackOverflow):

command line: to avoid expanding %MYAPPSDIR% by command line interpreter, the % percent character should be escaped by the standard CLI escape character (^ caret): ^%MYAPPSDIR^% or ^%1;
.bat script: to avoid expanding %MYAPPSDIR% or %1 by batch interpreter, the % percent character should be doubled as follows: %%MYAPPSDIR%% and %%1, respectively.

Batch interpreter parses command line in slightly different manner than pure command line parser (read answers to another question at StackOverflow):

command line: to avoid expanding %MYAPPSDIR% by command line interpreter, the % percent character should be escaped by the standard CLI escape character (^ caret): ^%MYAPPSDIR^% or ^%1;
.bat script: to avoid expanding %MYAPPSDIR% or %1 by batch interpreter, the % percent character should be doubled as follows: %%MYAPPSDIR%% and %%1, respectively.

To distinguish parameters supplied to your batch script:

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:.exe=%"
)
if "%par%"=="%par1%" (
  echo .exe not present
) else (
  echo .exe present
)

or (maybe better)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%par1:~-4%"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

or (maybe the best)

set "par1=%~1"
if "%par1%"=="" (
  echo no parameter supplied
  goto :eof
) else (
  set "par=%~x1"
)
if /I "%par%"==".exe" (
  echo .exe present
) else (
  echo .exe not present
)

Resources (required reading):

(command reference) An A-Z Index of the Windows CMD command line

(additional particularities) Windows CMD Shell Command Line Syntax

(%~1 etc. special page) Command Line arguments (Parameters)

(%par1:~-4% substring) Variables: extract part of a variable

(%par1:.exe=%) Variable Edit/Replace

Source Link

created Jun 25, 2015 at 8:48

JosefZ

13.4k
5
40
72

Batch interpreter parses command line in slightly different manner than pure command line parser (read answers to another question at StackOverflow):

command line: to avoid expanding %MYAPPSDIR% by command line interpreter, the % percent character should be escaped by the standard CLI escape character (^ caret): ^%MYAPPSDIR^% or ^%1;
.bat script: to avoid expanding %MYAPPSDIR% or %1 by batch interpreter, the % percent character should be doubled as follows: %%MYAPPSDIR%% and %%1, respectively.

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