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Accepted
topher
Asked: 2015-04-28 10:02:28 +0800 CST

Command to Combine text 100 lines at a time

  • 772

I have a file with 7000 lines. I need to combine the lines 100 at a time to reduce it to 70 lines i.e

line 1
line 2
line 3
...
line 7000

becomes 

line 1 line 2 line 3 line 4 ... line 100
line 101 line 102 line 103 line 104 ... line 200
...
line 6901 line 6902 line 6903 line 6904 ... line 7000

I know I can do this using code. Is there a way to do this on command line?

12.04

2 Answers

  1. Best Answer

    Try xargs:

    xargs -L 100 < file

    Test:

    for i in {1..7000}; do echo "line $i"; done | xargs -L 100
    • 2

  2. I would do something like this: 

    split -l 100 --numeric-suffixes--additional-suffix=.tmp The_Big_File fragment_  
for f in fragment_[0-9][0-9].tmp ; do  
    tr "\n" " " <$f  
    echo  
    rm $f
done
    • 1