Commands for splitting and merging CentOS files

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The syntax of the split command is:

Split [--help] [--version] [- a] [- b] [- C] [- l] [file to be cut] [output file name prefix]

The corresponding parameters are described as follows:

-a,-- suffix length used by suffix-length=N (default is 2)-b,-- bytes=SIZE byte size per output file-C,-- line-bytes=SIZE maximum byte size per line of each output file-d,-- numeric-suffixes uses numeric suffix instead of letter suffix-l,-- lines=NUMBER sets the number of lines per output file-- help displays help-- version displays version information.

Here are a few examples:

1) the file splitTest.txt is divided into multiple files, and the size of each file is 10m. Command:

$split-b 20m splitTest.txt $ls splitTest.txt xaa xab xac

2) the file splitTest.txt is divided into multiple files, and the size of each file is 10m. Specify the split file prefix bit split, command:

$split-b 20m splitTest.txt split $ls splitaa splitab splitac splitTest.txt

3) split the file splitTest.txt into multiple files, each with 500000 lines. Command:

$wc-l splitTest.txt 1502216 splitTest.txt $split-l 500000 splitTest.txt split $ls splitaa splitab splitac splitad splitTest.txt

4) split the file splitTest.txt into multiple files, each with 500000 lines. Specify that the suffix of the split file is a number and the number of digits is 3 digits, and the command:

$wc-l splitTest.txt 1502216 splitTest.txt $split-l 500000-d-a 3 splitTest.txt split $ls split000 split001 split002 split003 splitTest.txt

You can use the cat command to merge the split file into a new file:

$cat split0* > original.txt

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