Write variable to file in tcl

Write variable to file in tcl

# create some data
set data "This is some test data.\n"
# pick a filename - if you don't include a path,
#  it will be saved in the current directory
set filename "test.txt"
# open the filename for writing
set fileId [open $filename "w"]
# send the data to the file -
#  omitting '-nonewline' will result in an extra newline
# at the end of the file
puts -nonewline $fileId $data
# close the file, ensuring the data is written out before you continue
#  with processing.
close $fileId