In Linux, we can split large files with split command. And to join you just need to cat the files into one file.
Split can be used on binaries, text files whatever.
To split ->
# split –byte=10k /path/to/large/file /path/to/output/files/prefix
For eg. I want to split /root/slapd binary file.
Size of it is 1.3M
root@neel:~/test# ls -lh /root/slapd
-rwxr-xr-x 1 root root 1.3M 2011-05-11 13:49 /root/slapd
I want to split it into 10kb files. Just give below commands.
root@neel:~# split –byte=10k /root/slapd /root/test/prefix
It will split slapd into 10kb files under /root/test directory and all filenames will be prefixaa, prefixab etc…
To retrieve original file you need to do cat into different filenames.
root@neel:~# cat /root/test/prefix* > /root/neel
It created a binary file under /root with name neel.
Then I checked md5sum value of both files to check integrity:
root@neel:~/test# md5sum /root/neel
f1ac87370fea4cc9922acc443c19d518 /root/neel
root@neel:~/test# md5sum /root/slapd
f1ac87370fea4cc9922acc443c19d518 /root/slapd
If you notice both values are same.
