linux的常用命令cat

cat命令：

$man cat

CAT(1) User Commands CAT(1)

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.

AUTHOR

Written by Torbjorn Granlund and Richard M. Stallman.

REPORTING BUGS

Report cat bugs to bug-coreutils@gnu.org

GNU coreutils home page: <http://www.gnu.org/software/coreutils/>

General help using GNU software: <http://www.gnu.org/gethelp/>

Report cat translation bugs to <http://translationproject.org/team/>

COPYRIGHT

Copyright © 2010 Free Software Foundation, Inc. License GPLv3+: GNU

GPL version 3 or later <http://gnu.org/licenses/gpl.html>.

This is free software: you are free to change and redistribute it.

There is NO WARRANTY, to the extent permitted by law.

SEE ALSO

The full documentation for cat is maintained as a Texinfo manual. If

the info and cat programs are properly installed at your site, the com‐

mand

info coreutils 'cat invocation'

should give you access to the complete manual.

GNU coreutils 8.5 June 2010 CAT(1)

Manual page cat(1) line 41/80 (END)

具体例子，

explore@ubuntu:~/Documents$ cat -n ff.c gg.c

1 test:

2 cat 的使用方法

3 精通C语言，数据结构

4 熟悉Shell/Makefile/GCC/GDB

5 linux内核的制定和迁移

6 Boot Loader的配置

7 文件系统构建

8 linux qt

9 TCP/IP协议，Socket编程

10