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31 lines
1.1 KiB
31 lines
1.1 KiB
& separates commands on a line.
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&& executes this command only if previous command's errorlevel is 0.
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|| (not used above) executes this command only if previous command's errorlevel is NOT 0
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> output to a file
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>> append output to a file
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< input from a file
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| output of one command into the input of another command
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^ escapes any of the above, including itself, if needed to be passed to a program
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" parameters with spaces must be enclosed in quotes
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+ used with copy to concatenate files. E.G. copy file1+file2 newfile
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, used with copy to indicate missing parameters. This updates the files modified date. E.G. copy /b file1,,
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%variablename% a inbuilt or user set environmental variable
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!variablename! a user set environmental variable expanded at execution time, turned with SetLocal EnableDelayedExpansion command
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%<number> (%1) the nth command line parameter passed to a batch file. %0 is the batchfile's name.
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%* (%*) the entire command line.
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%<a letter> or %%<a letter> (%A or %%A) the variable in a for loop. Single % sign at command prompt and double % sign in a batch file. |