cat.doc

一个可用于linux下的命令行音乐播放器

`cat': Concatenate and write files
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   `cat' copies each FILE (`-' means standard input), or standard input
if none are given, to standard output.  Synopsis:

     cat [OPTION] [FILE]...

   The program accepts the following options.

`--help'
     Print a usage message listing all available options, then exit
     successfully.

`--version'
     Print the version number, then exit successfully.

`-A'
`--show-all'
     Equivalent to `-vET'.

`-B'
`--binary'
     On MS-DOS only, causes `cat' read and write the files in DOS binary
     mode.  By default, `cat' on MS-DOS uses binary mode only when
     standard output is redirected to a file or a pipe; this option
     overrides that.  Binary file I/O is used so that the files retain
     their format (Unix text as opposed to DOS text and binary),
     because `cat' is frequently used as file copying program.  Some
     options (see below) cause `cat' read and write files in text mode
     because then the original file contents aren't important (e.g.,
     when lines are numbered by `cat', or when line endings should be
     marked).  This is so these options work as MS-DOS users would
     expect; for example, DOS text files have their lines end with
     <CR-LF> pair of characters which won't be processed as an empty
     line by `-b' unless the file is read in text mode.

`-b'
`--number-nonblank'
     Number all nonblank output lines, starting with 1.  On MS-DOS, this
     option causes `cat' to read and write files in DOS text mode.

`-e'
     Equivalent to `-vE'.

`-E'
`--show-ends'
     Display a `$' after the end of each line.  On MS-DOS, this option
     causes `cat' to read and write files in DOS text mode.

`-n'
`--number'
     Number all output lines, starting with 1.  On MS-DOS, this option
     causes `cat' to read and write files in DOS text mode.

`-s'
`--squeeze-blank'
     Replace multiple adjacent blank lines with a single blank line.  On
     MS-DOS, this option causes `cat' to read and write files in DOS
     text mode.

`-t'
     Equivalent to `-vT'.

`-T'
`--show-tabs'
     Display <TAB> characters as `^I'.

`-u'
     Ignored; for Unix compatibility.

`-v'
`--show-nonprinting'
     Display control characters except for <LFD> and <TAB> using `^'
     notation and precede characters that have the high bit set with
     `M-'.  On MS-DOS, this option causes `cat' to read files and
     standard input in DOS binary mode, so the <CR> characters at the
     end of each line are also visible.