Split a file
Sometimes you need split a file. For example, to send them attached to an email. For this, you can use the split command.
$ split -b 1m big_file file_part_
In the example, the big_file size is 10MB, the -b option split the file in 1MB pieces, and the file_part_ is the name given to the different parts.
$ ls file_part_*
file_part_aa file_part_ac file_part_ae file_part_ag file_part_ai
file_part_ab file_part_ad file_part_af file_part_ah file_part_aj
All the files are 1MB long.
For joining all the parts you can ...