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在linux下使用c语言编写的一个文件拷贝的源码

.
|-- bin
|-- boot
|   `-- grub
|-- dev
|   |-- ataraid
|   |-- cciss
|   |-- compaq
|   |-- dri
|   |-- fd -> ../proc/self/fd
|   |-- i2o
|   |-- ida
|   |-- inet
|   |-- input
|   |-- logicalco
|   |   |-- bci
|   |   `-- dci1300
|   |-- pts
|   |-- raw
|   |-- rd
|   |-- shm
|   |-- usb
|   `-- video
|-- etc
|   |-- CORBA
|   |   `-- servers
|   |-- FreeWnn
|   |   `-- zh_CN
|   |       |-- dic -> /var/lib/wnn/zh_CN/dic
|   |       |-- rk
|   |       |-- rk_p
|   |       `-- rk_z
|   |-- X11
|   |   |-- WindowMaker
|   |   |-- applnk
|   |   |   |-- Applications
|   |   |   |-- Development
|   |   |   |-- Games
|   |   |   |-- Graphics
|   |   |   |-- Internet
|   |   |   |-- Multimedia
|   |   |   |-- System
|   |   |   `-- Utilities
|   |   |-- fs
|   |   |-- fvwm2
|   |   |-- gdm
|   |   |   |-- Init
|   |   |   |-- PostSession
|   |   |   |-- PreSession
|   |   |   `-- Sessions
|   |   |-- lbxproxy
|   |   |-- proxymngr
|   |   |-- rstart
|   |   |   |-- commands
|   |   |   |   |-- x -> x11r6
|   |   |   |   |-- x11 -> x11r6
|   |   |   |   `-- x11r6
|   |   |   `-- contexts
|   |   |-- serverconfig
|   |   |-- starthere
|   |   |-- sysconfig
|   |   |-- twm
|   |   |-- xdm
|   |   |   |-- authdir -> ../../../var/lib/xdm
|   |   |   `-- pixmaps
|   |   |-- xinit
|   |   |   `-- xinitrc.d
|   |   |-- xkb -> ../../usr/X11R6/lib/X11/xkb
|   |   |-- xserver
|   |   `-- xsm
|   |-- alchemist
|   |   |-- namespace
|   |   |   |-- apache
|   |   |   |-- dns
|   |   |   `-- printconf
|   |   `-- switchboard
|   |-- amanda
|   |   `-- DailySet1
|   |-- chinese
|   |   `-- xcin
|   |-- cipe
|   |-- cron.d
|   |-- cron.daily
|   |-- cron.hourly
|   |-- cron.monthly
|   |-- cron.weekly
|   |-- default [error opening dir]
|   |-- dhcpc
|   |-- dhcpcd -> dhcpc
|   |-- ethereal
|   |-- gconf
|   |   |-- 1
|   |   |-- gconf.xml.defaults
|   |   |   `-- %gconf-xml-backend.lock [error opening dir]
|   |   |-- gconf.xml.mandatory
|   |   |   `-- %gconf-xml-backend.lock [error opening dir]
|   |   `-- schemas
|   |-- gimp
|   |   `-- 1.2
|   |-- gnome
|   |   |-- fonts
|   |   `-- panel-config
|   |       `-- panel.d
|   |           `-- default
|   |-- gnucash
|   |-- gtk
|   |-- hotplug
|   |-- httpd
|   |   |-- conf
|   |   |   |-- ssl.crl [error opening dir]
|   |   |   |-- ssl.crt [error opening dir]
|   |   |   |-- ssl.csr [error opening dir]
|   |   |   |-- ssl.key [error opening dir]
|   |   |   `-- ssl.prm [error opening dir]
|   |   |-- logs -> ../../var/log/httpd
|   |   `-- modules -> ../..//usr/lib/apache
|   |-- init.d -> rc.d/init.d
|   |-- iproute2
|   |-- isdn
|   |-- joe
|   |-- junkbuster
|   |-- kde
|   |   `-- kdm
|   |-- lam
|   |-- locale
|   |   |-- cs
|   |   |-- da
|   |   |-- de
|   |   |-- es
|   |   |-- eu_ES
|   |   |-- fi
|   |   |-- fr
|   |   |-- gl
|   |   |-- hu
|   |   |-- id
|   |   |-- is
|   |   |-- it
|   |   |-- ja
|   |   |-- ko
|   |   |-- nn
|   |   |-- no
|   |   |-- pl
|   |   |-- pt
|   |   |-- pt_BR
|   |   |-- ro
|   |   |-- ru
|   |   |-- sk
|   |   |-- sl
|   |   |-- sr
|   |   |-- sv
|   |   |-- tr
|   |   |-- uk
|   |   |-- wa
|   |   |-- zh
|   |   |   `-- LC_MESSAGES
|   |   `-- zh_CN.GB2312
|   |       `-- LC_MESSAGES
|   |-- log.d
|   |   |-- conf
|   |   |   |-- logfiles
|   |   |   `-- services
|   |   `-- scripts
|   |       |-- logfiles
|   |       |   |-- cron
|   |       |   |-- samba
|   |       |   `-- xferlog
|   |       |-- services
|   |       `-- shared
|   |-- logrotate.d
|   |-- mail
|   |-- makedev.d
|   |-- mgetty+sendfax
|   |-- midi
|   |-- mrtg
|   |-- news
|   |-- nmh
|   |-- ntp
|   |-- oaf
|   |-- openldap
|   |   `-- schema
|   |       `-- redhat
|   |-- opt
|   |-- pam.d
|   |-- pcmcia
|   |   `-- cis
|   |-- pgsql
|   |-- ppp
|   |   |-- peers
|   |   |   `-- isdn
|   |   `-- plugins
|   |-- profile.d
|   |-- rc.d
|   |   |-- init.d
|   |   |-- rc0.d
|   |   |-- rc1.d
|   |   |-- rc2.d
|   |   |-- rc3.d
|   |   |-- rc4.d
|   |   |-- rc5.d
|   |   `-- rc6.d
|   |-- rc0.d -> rc.d/rc0.d
|   |-- rc1.d -> rc.d/rc1.d
|   |-- rc2.d -> rc.d/rc2.d
|   |-- rc3.d -> rc.d/rc3.d
|   |-- rc4.d -> rc.d/rc4.d
|   |-- rc5.d -> rc.d/rc5.d
|   |-- rc6.d -> rc.d/rc6.d
|   |-- rpm
|   |-- rpmlint
|   |-- samba
|   |-- sane.d
|   |-- security
|   |   `-- console.apps
|   |-- sgml
|   |-- skel
|   |-- slip
|   |-- smrsh
|   |-- snmp
|   |-- sound
|   |   `-- events
|   |-- squid
|   |   `-- errors -> /usr/lib/squid/errors/English
|   |-- ssh
|   |-- sysconfig
|   |   |-- apm-scripts
|   |   |-- cbq
|   |   |-- console
|   |   |-- network-scripts
|   |   |-- networking
|   |   |   |-- devices
|   |   |   `-- profiles
|   |   |       `-- default
|   |   `-- rhn
|   |-- tripwire
|   |-- ups
|   |-- uucp
|   |   `-- oldconfig
|   |-- vfs
|   |   `-- modules
|   |-- vmware
|   |   |-- vmnet1
|   |   |   `-- dhcpd
|   |   `-- vmnet8
|   |       |-- dhcpd
|   |       `-- nat
|   |-- xinetd.d
|   `-- zebra [error opening dir]
|-- home
|   |-- bbs
|   |   |-- 0Announce
|   |   |   |-- bbslist
|   |   |   |-- bms
|   |   |   |   `-- deleted
|   |   |   |       |-- D50BB30E9
|   |   |   |       |   |-- D3FC9F1CD
|   |   |   |       |   |-- D47D67E4E
|   |   |   |       |   |-- D6B3FC09D
|   |   |   |       |   |-- D8765D6AA
|   |   |   |       |   `-- DAAD052E8
|   |   |   |       |-- D886578A0
|   |   |   |       |   `-- DA5806C2F
|   |   |   |       `-- D92B80935
|   |   |   |           |-- D6F63C8A5
|   |   |   |           `-- DB6794B2F
|   |   |   |-- groups
|   |   |   |   |-- GROUP_0
|   |   |   |   |   |-- Admin
|   |   |   |   |   |   |-- D61CEBDF1
|   |   |   |   |   |   `-- D84CEDFB8
|   |   |   |   |   |-- Announce
|   |   |   |   |   |   `-- D946B0711
|   |   |   |   |   |       `-- D9903C3FA
|   |   |   |   |   |-- BoardManager
|   |   |   |   |   |   `-- D8D0C46F0
|   |   |   |   |   |       `-- DA9D4DF44
|   |   |   |   |   |-- Memorial
|   |   |   |   |   |   `-- CS98
|   |   |   |   |   |       `-- DB5A48E4D
|   |   |   |   |   |-- PersonalCorpus
|   |   |   |   |   |   |-- A
|   |   |   |   |   |   |-- B
|   |   |   |   |   |   |-- C
|   |   |   |   |   |   |-- D
|   |   |   |   |   |   |   `-- dafu
|   |   |   |   |   |   |       |-- D44D43776
|   |   |   |   |   |   |       |   `-- D3BA0BDF2
|   |   |   |   |   |   |       |-- D6946AE62
|   |   |   |   |   |   |       |-- DAAC9D126
|   |   |   |   |   |   |       `-- DAAFBFE1B
|   |   |   |   |   |   |           |-- D75926882
|   |   |   |   |   |   |           `-- D9230973B
|   |   |   |   |   |   |-- E
|   |   |   |   |   |   |-- F
|   |   |   |   |   |   |-- G
|   |   |   |   |   |   |-- H
|   |   |   |   |   |   |   |-- D8D523B7D
|   |   |   |   |   |   |   |   |-- D3D2EEB4F
|   |   |   |   |   |   |   |   |-- D46A5182A
|   |   |   |   |   |   |   |   |-- D69A9E08A
|   |   |   |   |   |   |   |   |-- D79BFD7EC
|   |   |   |   |   |   |   |   |-- D7C8B45AA
|   |   |   |   |   |   |   |   |-- D800C31CA
|   |   |   |   |   |   |   |   |-- D9E91C7C1
|   |   |   |   |   |   |   |   |-- DB10F8657
|   |   |   |   |   |   |   |   |-- DB1EB7949
|   |   |   |   |   |   |   |   |-- DB4F6DD8A
|   |   |   |   |   |   |   |   `-- DB56A90DC
|   |   |   |   |   |   |   |-- a
|   |   |   |   |   |   |   |   |-- D3D2EEB4F
|   |   |   |   |   |   |   |   |-- D46A5182A
|   |   |   |   |   |   |   |   |-- D69A9E08A
|   |   |   |   |   |   |   |   |-- D79BFD7EC
|   |   |   |   |   |   |   |   |-- D7C8B45AA
|   |   |   |   |   |   |   |   |-- D800C31CA
|   |   |   |   |   |   |   |   |-- D9E91C7C1
|   |   |   |   |   |   |   |   |-- DB10F8657
|   |   |   |   |   |   |   |   |-- DB1EB7949
|   |   |   |   |   |   |   |   |-- DB4F6DD8A
|   |   |   |   |   |   |   |   `-- DB56A90DC
|   |   |   |   |   |   |   `-- heap
|   |   |   |   |   |   |       |-- D7F5B040F
|   |   |   |   |   |   |       |   `-- D532C82EA
|   |   |   |   |   |   |       |-- D97A2B53E
|   |   |   |   |   |   |       |-- DB3B3848B
|   |   |   |   |   |   |       `-- old
|   |   |   |   |   |   |           |-- D3D2EEB4F
|   |   |   |   |   |   |           |-- D46A5182A
|   |   |   |   |   |   |           |-- D69A9E08A
|   |   |   |   |   |   |           |-- D79BFD7EC
|   |   |   |   |   |   |           |-- D7C8B45AA
|   |   |   |   |   |   |           |-- D800C31CA
|   |   |   |   |   |   |           |-- D9E91C7C1
|   |   |   |   |   |   |           |-- DB10F8657
|   |   |   |   |   |   |           |-- DB1EB7949
|   |   |   |   |   |   |           |-- DB4F6DD8A