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  cat command uses the Linux redirection merge files
  Add Date : 2017-08-31      
  Cat merge file command to redirect the use of Linux

Look at the documentation:

[Doctor @ localhost Documents] $ < strong> cat --help < / strong>
Usage: cat [option] ... [file] ...
[File] or a combination of standard input to standard output.

  -A, --show-All equal -vET
  -b, --number-nonblank number nonempty output lines
  -e equal -vE
  -E, --show-Ends display "$" at the end of each line
  -n, --number output numbers for all rows
  -s, --squeeze-blank not output more blank lines
  -t and -vT equivalent
  -T, --show-Tabs the tab character is displayed as ^ I
  -u (ignored)
  -v, --show-nonprinting use ^ and M- references, in addition to outside LFD and TAB
      --help display this help and exit
      --version display version information and exit

If you do not specify a file, or the file is "-", read standard input.

  cat f - g f first output, and output standard input, output g of the final.
  cat Copy the contents of standard input to standard output.

Merge several files with the command

cat a.txt b.txt> c.txt


cat a.txt b.txt >> c.txt

The first difference is that a file is created or truncated files. The second is appended to the end of the file (the file does not exist is created).
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