Linux Commands 彻底研究（04）：cat

NAME

       cat - concatenate files and print on the standard output

　　　　

SYNOPSIS

       cat [OPTION]... [FILE]...

DESCRIPTION

       Concatenate FILE(s), or standard input, to standard output.
-A, --show-all

              equivalent to -vET
-b, --number-nonblank

              number nonempty output lines
-e     equivalent to -vE
-E, --show-ends

              display $ at end of each line
-n, --number

              number all output lines
-s, --squeeze-blank

              suppress repeated empty output lines
-t     equivalent to -vT
-T, --show-tabs

              display TAB characters as ^I
-u     (ignored)
-v, --show-nonprinting

              use ^ and M- notation, except for LFD and TAB
--help display this help and exit
--version

              output version information and exit
With no FILE, or when FILE is -, read standard input.
EXAMPLES

       cat f - g

              Output f’s contents, then standard input, then g’s contents.
cat    Copy standard input to standard output.
用法：
cat <<EOF
output all between <<EOF and EOF
EOF

Linux Commands 彻底研究（04）：cat