Difference between revisions of "Batch File Scripting Tips"
From WPKG | Open Source Software Deployment and Distribution
(New page: Here are collected various batch file scripting tips for use when writing .bat files for use with WPKG. If a batch file gives a degree of output to the screen it can overwhelm WPKG and th...) |
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Here are collected various batch file scripting tips for use when writing .bat files for use with WPKG. | Here are collected various batch file scripting tips for use when writing .bat files for use with WPKG. | ||
| − | If a batch file gives a degree of output to the screen it can overwhelm WPKG and the batch script hang. Lessen the output of commands by appending each with ' 1>NUL 2>NUL'. This will prevent commands echoing their messgaes (from use of the echo command), results and errors to the screen and thus to WPKG. | + | * If a batch file gives a degree of output to the screen it can overwhelm WPKG and the batch script hang. Lessen the output of commands by appending each with ' 1>NUL 2>NUL'. This will prevent commands echoing their messgaes (from use of the echo command), results and errors to the screen and thus to WPKG. |
Also, begin a batch script with '@echo off' so that the commands themselves aren't displayed. | Also, begin a batch script with '@echo off' so that the commands themselves aren't displayed. | ||
| − | Where a % character references a variable from within a batch file, where a single % can be used from the command-line a double %% has to be used from within a batch file. | + | * Where a % character references a variable from within a batch file, where a single % can be used from the command-line a double %% has to be used from within a batch file. |
| − | The Windows shell and some command-line programs don't like spaces appearing in file or directory names. For example when using such wildcards as %PROGRAMFILES% in %PROGRAMFILES%\some-directory\some-program.exe where we don't know whether or not %PROGRAMFILES% contains a space, use "%PROGRAMFILES%\some-directory\some-program.exe" | + | * The Windows shell and some command-line programs don't like spaces appearing in file or directory names. For example when using such wildcards as %PROGRAMFILES% in %PROGRAMFILES%\some-directory\some-program.exe where we don't know whether or not %PROGRAMFILES% contains a space, use "%PROGRAMFILES%\some-directory\some-program.exe" |
[[category:Documentation]] | [[category:Documentation]] | ||
Revision as of 22:57, 1 March 2010
Here are collected various batch file scripting tips for use when writing .bat files for use with WPKG.
- If a batch file gives a degree of output to the screen it can overwhelm WPKG and the batch script hang. Lessen the output of commands by appending each with ' 1>NUL 2>NUL'. This will prevent commands echoing their messgaes (from use of the echo command), results and errors to the screen and thus to WPKG.
Also, begin a batch script with '@echo off' so that the commands themselves aren't displayed.
- Where a % character references a variable from within a batch file, where a single % can be used from the command-line a double %% has to be used from within a batch file.
- The Windows shell and some command-line programs don't like spaces appearing in file or directory names. For example when using such wildcards as %PROGRAMFILES% in %PROGRAMFILES%\some-directory\some-program.exe where we don't know whether or not %PROGRAMFILES% contains a space, use "%PROGRAMFILES%\some-directory\some-program.exe"