Asked 12 years ago. Active 5 months ago. Viewed k times. Improve this question. Peter Mortensen Out of curiousity, after they're "split", how does one "combine" them?
Or is there another ninja utility? In general apropos is useful for finding appropriate commands. You can choose how you want your line break characters look. Show 1 more comment. Active Oldest Votes. Mandatory arguments to long options are mandatory for short options too. Improve this answer. Mark Byers Mark Byers k gold badges silver badges bronze badges.
At least on Windows with the version I have. I had the exact same problem as you until I found that piece of advice. Hope this useful for Mac user. Show 9 more comments. Use the split command: split -l mybigfile. Robert Christie Robert Christie Add a comment. Yes, there is a split command. It will split a file by lines or bytes. TRiG 9, 6 6 gold badges 53 53 silver badges bronze badges. For a project i am working on, I am trying to split a text file into multiple files based on column with multiple thread..
I have tried a program where i am successfully splitting a file based on column name.. But I need to write a program with multiple threads.. Posted Sep am Member Add a Solution. Richard MacCutchan Sep am.
What exactly is your question? Member Sep am. I need to split a text file in to 10 separate files by using multiple threads.. Yes, you have already said that. But you have not explained what the problem is in terms of what you cannot do, or what does not work etc.
And before you start working on threads you need to be sure that that is the best solution to the problem. I am little bit confused just know i started coding and its my task to do with multiple threads.. Will you please suggest me some idea or i would be thankful if you help me in coding.
Does using multiple threads is good idea to split a file.. I am unable to split the file with multiple threads.. You are looking at the problem from the wrong end. Can you be certain that using multiple threads is the right way to do it? The first issue is how to split the data into its separate columns. Should you do that all at once and create 10 lists, or one row at a time and feed each element to a writer activity?
Once you have that figured you can go on to see how the use of threads may improve the overall performance. TRiG 9, 6 6 gold badges 53 53 silver badges bronze badges. Dave Kirby Dave Kirby 24k 5 5 gold badges 63 63 silver badges 79 79 bronze badges. It should be in the same directory. Split the file "file. Harshwardhan Harshwardhan 1 1 silver badge 5 5 bronze badges. This only obtains the first lines, you need to loop it to successively split the file into the next Or just use split like all the top answers here already tell you.
If we want to preserve full lines i. Or, just use the -n option of split. HDFS getmerge small file and split into a proper size. This method will cause line breaks: split -b m compact. Split into MB, and judge sizeunit is M or G. Please test before use. Matiji66 Matiji66 7 7 silver badges 14 14 bronze badges. What is "HDFS"? Hadoop distributed file system? Or something else? Can you provide a reference to it? What are "celling" and "begain"? Is the latter "begin" or "start"?
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