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BUILT-IN MATHEMATICA SYMBOL
PutAppend 
appends expr to a file.
PutAppend[expr1, expr2, ..., "filename"]
appends a sequence of expressions 
to a file.
Examplesopen all
Basic Examples (1)
Append expression values at the end of a temporary file:
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Create a directory for temporary files and change to that directory:
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Put the value of 
in a file:
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Update 
and append the new value to the file:
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The file now contains the two values:
Append successive iterates to the file in a loop:
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Reset to the original directory:
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New in 1
