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deepblue_86
Asked: 2016-08-10 02:55:46 +0800 CST

Copy text file into another new text file as a sequential way

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Assume I have three text files, data_1, data_2, and data_3. Firstly, I need to copy data_1 inside to another new text file (new_data). Then I need to add data_2 to new_data (includes data_1). Finally I need to add data_3 to new_data (includes data_1 and data_2).

For example,

data_1=  10 10 10
         15 15 15

data_2=5 5 5


data_3=  11 11 11
         12 12 12


new_data=   10 10 10
            15 15 15
             5  5  5
            11 11 11
            12 12 12

How can I perform this task as a sequential way for multiple text files?

scripts

1 Answers

  1. Best Answer

    As you are just appending the file contents one after another, use cat maintaining the sequence you want, currently this should do:

    cat data_{1..3} >new_data

    The shell will expand data_{1..3} into data_1 data_2 data_3, so the operation would eventually be:

    cat data_1 data_2 data_3 >new_data
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