Unix split command

 Unix split command 

Created 1gb file for testing 

dd if=/dev/urandom of=anuj.trc bs=64M count=16 iflag=fullblock

16+0 records in

16+0 records out

1073741824 bytes (1.1 GB) copied, 65.8006 s, 16.3 MB/s

[oracle@rac01:~] $ls -ltr anuj.trc

-rw-r--r-- 1 oracle oinstall 1073741824 Aug  1 04:46 anuj.trc

[oracle@ibrac01:~] $ls -lhtr anuj.trc

-rw-r--r-- 1 oracle oinstall 1.0G Aug  1 04:46 anuj.trc

Split the file 400m chunks

[oracle@rac01:~] $

tar cz anuj.trc | split -b 400m - anuj.trc_split

rac01:~] $ls -ltrh anuj*

-rw-r--r-- 1 oracle oinstall 1.0G Aug  1 04:46 anuj.trc

-rw-r--r-- 1 oracle oinstall 400M Aug  1 04:49 anuj.trc_splitaa

-rw-r--r-- 1 oracle oinstall 400M Aug  1 04:49 anuj.trc_splitab

-rw-r--r-- 1 oracle oinstall 225M Aug  1 04:50 anuj.trc_splitac

delete the old file to test !!!

rm anuj.trc

To Join 

cat anuj.trc_split* | tar xz

ls -ltrh anuj*

-rw-r--r-- 1 oracle oinstall 1.0G Aug  1 04:46 anuj.trc  <<<<<----Now file is back 

-rw-r--r-- 1 oracle oinstall 400M Aug  1 04:49 anuj.trc_splitaa

-rw-r--r-- 1 oracle oinstall 400M Aug  1 04:49 anuj.trc_splitab

-rw-r--r-- 1 oracle oinstall 225M Aug  1 04:50 anuj.trc_splitac