How to split a file into smaller chuncks:
# ls -l
total 93564
-rw-rw-r-- 1 dennis dennis 95805440 Feb 8 05:20 myfile.tar
# sum myfile.tar
17765 93560
# split -b 25M myfile.tar chunck
# ls -l
total 187124
-rw-r--r-- 1 dennis dennis 26214400 Feb 8 05:28 chunckaa
-rw-r--r-- 1 dennis dennis 26214400 Feb 8 05:28 chunckab
-rw-r--r-- 1 dennis dennis 26214400 Feb 8 05:28 chunckac
-rw-r--r-- 1 dennis dennis 17162240 Feb 8 05:28 chunckad
-rw-rw-r-- 1 dennis dennis 95805440 Feb 8 05:20 myfile.tar
Putting the pieces back together.
# cat chuncka* > another.tar
# ls -l
total 280688
-rw-r--r-- 1 dennis dennis 95805440 Feb 8 05:28 another.tar
-rw-r--r-- 1 dennis dennis 26214400 Feb 8 05:28 chunckaa
-rw-r--r-- 1 dennis dennis 26214400 Feb 8 05:28 chunckab
-rw-r--r-- 1 dennis dennis 26214400 Feb 8 05:28 chunckac
-rw-r--r-- 1 dennis dennis 17162240 Feb 8 05:28 chunckad
-rw-rw-r-- 1 dennis dennis 95805440 Feb 8 05:20 myfile.tar
# sum another.tar
17765 93560
