Split Files using tar ,gz,zip or bzip2

Question

Hello, i need to compress file and it's giganitc file :D the size is about 17-20 GB i need to split it to files in size around 1GB for each part , i tried to googleit and found way using split,cat command and it did not work at all in large files , also it wont work in Windows i need to extarct it on windows machine, thanks in advance

Answer 1

Not tested, something like

 gzip -c file.orig > file.gz
 CHUNKSIZE=1073741824
 PARTCNT=$[$(stat -c%s file.gz) / $CHUNKSIZE]

 # the remainder is taken care of, for example for
 # 1 GiB + 1 bytes PARTCNT is 1 and seq 0 $PARTCNT covers
 # all of file
 for n in `seq 0 $PARTCNT`
 do
       dd if=file.gz of=part.$n bs=$CHUNKSIZE skip=$n count=1
 done

Answer 2

If you are splitting from Linux, you can still reassemble in Windows.

copy /b file1 + file2 + file3 + file4 filetogether

Answer 3

use tar to split into multiple archives

there are plenty of programs that will work with tar files on windows, including cygwin.

Answer 4

You can use the split command with the -b option:

split -b 1024m file.tar.gz

It can be reassembled on a Windows machine using @Joshua's answer.

copy /b file1 + file2 + file3 + file4 filetogether

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Edit: As @Charlie stated in the comment below, you might want to set a prefix explicitly because it will use x otherwise, which can be confusing.

split -b 1024m "file.tar.gz" "file.tar.gz.part-"

// Creates files: file.tar.gz.part-aa, file.tar.gz.part-ab, file.tar.gz.part-ac, ...