CAT(C) XENIX System V CAT(C)
Name
cat - Concatenates and displays files.
Syntax
cat [ -u ] [ -s ] [ -v ] [ -t ] [ -e ] file ...
Description
cat reads each file in sequence and writes it on the
standard output. If no input file is given, or if a single
dash (-) is given, cat reads from the standard input. The
options are:
-s Suppresses warnings about nonexistent files.
-u Causes the output to be unbuffered.
-v Causes non-printing characters (with the exception of
tabs, newlines, and form feeds) to be displayed.
Control characters are displayed as ``^X'' (Ctrl-X),
where X is the key pressed with the Ctrl key (for
example, Ctrl-M is displayed as ^M). The DEL character
(octal 0177) is printed as ``^?.'' Non-ASCII characters
(with the high bit set) are printed as ``M -x,'' where
x is the character specified by the seven low order
bits.
-t Causes tabs to be printed as ``^I'' and form feeds as
``^L''. This option is ignored if the -v option is not
specified.
-e Causes a ``$'' character to be printed at the end of
each line (prior to the new-line). This option is
ignored if the -v option is not set.
No input file may have the same name as the output file
unless it is a special file.
Examples
The following example displays file on the standard output:
cat file
The following example concatenates file1 and file2 and
places the result in file3:
cat file1 file2 >file3
The following example concatenates file1 and appends it to
file2:
cat file1 >> file2
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CAT(C) XENIX System V CAT(C)
See Also
cp(C), pr(C)
Warning
Command lines such as:
cat file1 file2 > file1
will cause the original data in file1 to be lost; therefore,
you must be careful when using special shell characters.
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