PutAppend

expr>>>filename

appends expr to a file.

PutAppend[expr1,expr2,…,"filename"]

appends a sequence of expressions expri to a file.

Details and Options

  • PutAppend works the same as Put, except that it adds output to the end of the file, rather than replacing the complete contents of the file.
  • PutAppend works with cloud objects.
  • PutAppend[…,File["file"]] is also supported.

Examples

open allclose all

Basic Examples  (1)

Append expression values at the end of a temporary file:

Create a directory for temporary files and change to that directory:

Put the value of x in a file:

Update x and append the new value to the file:

The file now contains the two values:

Append successive iterates to the file in a loop:

Reset to the original directory:

Scope  (1)

Append expression to the file specified by the File object:

Introduced in 1988
 (1.0)
 |
Updated in 2014
 (10.0)
2016
 (11.0)