转 | Linux大文件(比如ISO)的拆分、合并、校验

[root@liuyzh1 ~]# md5sum rhel-server-6.3-x86_64-dvd.iso
d717af33dd258945e6304f9955487017  rhel-server-6.3-x86_64-dvd.iso

split -b 600m -d rhel-server-6.3-x86_64-dvd.iso redhat6.3_x

[root@liuyzh1 ~]# for var in $(ls redhat*); do md5sum $var; done
b9440b925d9e9bc640fd23ff00e15450  redhat6.3_x00
af4985a9aa1bc557b5a05de3cdad026b  redhat6.3_x01
2433ab29a85789f4aca21421307ed788  redhat6.3_x02
8cbccc256b1da1014f07e9142cf2fc4c  redhat6.3_x03
962e79bceacef5c1fa9336e4a21ce995  redhat6.3_x04
22a68fb82aaa7c8d516897740ebf052f  redhat6.3_x05
#可以直接将MD5值重定向到文件
[root@liuyzh1 ~]# for var in $(ls redhat*); do md5sum $var >> s_sub.md5; done

scp redhat6.3_x00 redhat6.3_x01 redhat6.3_x02 redhat6.3_x03 redhat6.3_x04 redhat6.3_x05 user@192.168.122.36:~

#5.1 在接收端生成子文件
[root@liuyzh1 ~]# for var in $(ls redhat6.3_x*);do md5sum $var ;done
b9440b925d9e9bc640fd23ff00e15450  redhat6.3_x00
af4985a9aa1bc557b5a05de3cdad026b  redhat6.3_x01
2433ab29a85789f4aca21421307ed788  redhat6.3_x02
8cbccc256b1da1014f07e9142cf2fc4c  redhat6.3_x03
962e79bceacef5c1fa9336e4a21ce995  redhat6.3_x04
22a68fb82aaa7c8d516897740ebf052f  redhat6.3_x05
for var in $(ls redhat*); do md5sum $var >> d_sub.md5; done
#5.2 比较源子文件MD5码，相同说明完整
[root@liuyzh1 ~]# diff s_sub.md5 d_sub.md5 > /dev/null && echo true || echo false
true

cat redhat6.3_x00 redhat6.3_x01 redhat6.3_x02 redhat6.3_x03 redhat6.3_x04 redhat6.3_x05 > rhel-server-6.3-x86_64-dvd.iso

md5sum rhel-server-6.3-x86_64-dvd.iso
d717af33dd258945e6304f9955487017  rhel-server-6.3-x86_64-dvd.iso
# 比较:略(字符串比较)