Split file into rows in UNIX

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# 8  
Old 02-26-2020
Originally Posted by nezabudka
Speed increased 5-10 times!
6GB single line file completely froze the system
Hello nez,

How about this one then? I am sorry I couldn't test it since I don' have my logged into any server so tested on a online editor with 2 lines. Pretty sure should be faster Smilie

xargs -d'-' -n 3 <  Input_file | sed -E 's/ /-/g;/^$/d'

R. Singh
This User Gave Thanks to RavinderSingh13 For This Post:
# 9  
Old 02-26-2020
Originally Posted by RavinderSingh13
xargs -d'-' -n 3 <  Input_file | sed -E 's/ /-/g;/^$/d'

Even a little slower than in my version
This User Gave Thanks to nezabudka For This Post:
# 10  
Old 02-26-2020
I completely missed the 6GB part, sorry for the wrong suggestion.

# 11  
Old 02-26-2020
awk 'ORS=(NR % 3) ? RS : "\n"' RS=- File.txt > outfile.txt

Last edited by rdrtx1; 02-26-2020 at 07:22 PM..
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# 12  
Old 02-28-2020
Hi @rdrtx1
In your version, progress is 2.7MiB/s
If a little change
awk '{getline b; getline c; print $0"-"b"-"c}' RS='-'

  • speed will rise a little 3.7MiB/s
  • version from @RavinderSingh13 4.5MiB/s as mine 5.0MiB/s
  • version from @RudiC 28.0-40.0MiB/s process speed is volatile.
so while 'tr' + 'paste' is not in competition
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