NAME

SYNOPSIS

DESCRIPTION

Concatenate FILE(s), or standard input, to standard output.         ///將一個(gè)文件的內(nèi)容連續(xù)輸出

-A, --show-all

equivalent to -vET

-b, --number-nonblank

number nonblank output lines

-e

equivalent to -vE

-E, --show-ends

display $ at end of each line

-n, --number

number all output lines

-s, --squeeze-blank

never more than one single blank line

-t

equivalent to -vT

-T, --show-tabs

display TAB characters as ^I

-u

(ignored)

-v, --show-nonprinting                   ///顯示看不到的特殊字符

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.  

AUTHOR

REPORTING BUGS

COPYRIGHT

SEE ALSO

info coreutils cat

should give you access to the complete manual.

NAME

SYNOPSIS

DESCRIPTION

Write each FILE to standard output, last line first. With no FILE, or when FILE is -, read standard input.

Mandatory arguments to long options are mandatory for short options too.

-b, --before

attach the separator before instead of after

-r, --regex

interpret the separator as a regular expression

-s, --separator=STRING

use STRING as the separator instead of newline

--help

display this help and exit

--version

output version information and exit

AUTHOR

REPORTING BUGS

COPYRIGHT

SEE ALSO

info coreutils tac

should give you access to the complete manual.

NAME

SYNOPSIS

DESCRIPTION

Write each FILE to standard output, with line numbers added. With no FILE, or when FILE is -, read standard input.

Mandatory arguments to long options are mandatory for short options too.

-b, --body-numbering=STYLE

use STYLE for numbering body lines

-d, --section-delimiter=CC

use CC for separating logical pages

-f, --footer-numbering=STYLE

use STYLE for numbering footer lines

-h, --header-numbering=STYLE

use STYLE for numbering header lines

-i, --page-increment=NUMBER

line number increment at each line

-l, --join-blank-lines=NUMBER

group of NUMBER empty lines counted as one

-n, --number-format=FORMAT

insert line numbers according to FORMAT

-p, --no-renumber

do not reset line numbers at logical pages

-s, --number-separator=STRING

add STRING after (possible) line number

-v, --first-page=NUMBER

first line number on each logical page

-w, --number-width=NUMBER

use NUMBER columns for line numbers

--help

display this help and exit

--version

output version information and exit

By default, selects -v1 -i1 -l1 -sTAB -w6 -nrn -hn -bt -fn. CC are two delimiter characters for separating logical pages, a missing second character implies :. Type \\ for \. STYLE is one of:

a

number all lines

t

number only nonempty lines

n

number no lines

pREGEXP

number only lines that contain a match for REGEXP

FORMAT is one of:

ln

left justified, no leading zeros

rn

right justified, no leading zeros

rz

right justified, leading zeros

AUTHOR

REPORTING BUGS

COPYRIGHT

SEE ALSO

info coreutils nl

should give you access to the complete manual.

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