Thank you Corona688 for your suggestion. I only present the small example. In my case, I want to randomly choose 5000 lines out of 15000 lines. what should I do for this situation?
Hello sajmar,
Could you please try following and let me know if this helps you. 1st solution: 2nd solution:
Where $RANDOMis responsible for generating the random numbers from 0to32767. EDIT: Above 2 solutions will give lines duplicate, then following may help you in same too.
Thanks,
R. Singh
Last edited by RavinderSingh13; 09-13-2016 at 03:39 PM..
Reason: Added one more solution succesfully for same now.
This User Gave Thanks to RavinderSingh13 For This Post:
on my desktop i am using the kde rotating desktop image option. this rotates images randomly every half hour. now, i would like to write an html file which will have an inline frame with some text, maybe system messages, or my friends live journal thati read alot, or unix.com! however, i dont want... (1 Reply)
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1 32 3
4 6 4
4 45 1
45 4 61
54 66 4
5 65 51
56 65 1
12 32 85
now here the total number of lines are 8(they vary each time)
Now i want to select only those lines in which the values... (6 Replies)
I need to delete half(approx) the file or select half the file by existence of some character
My file looks like
1
2
3
4
.
.
.
50
.
.
100I need to select only 50 to rest of the file or needs to delete the file upto 50.
Please help me out.. (6 Replies)
Hi Everyone !
i want to take all the lines from a file that falls in between some date... and every line in a file has a time stamp..
---some text---- 01/Jan/2010 ---- some other text ----
---some text---- 10/Jan/2010 ---- some other text ----
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Hello,
This is my code:
nb_lignes=`wc -l $1 | cut -d " " -f1`
for i in $(seq $nb_lignes)
do
m=`head $1 -n $i | tail -1`
//command
done
Please how can i change it to get Get 20% of lines in File randomly to apply "command" on each line ? 20% or 40% or 60 % (it's a parameter)
Thank you. (15 Replies)
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For example, I'd like to retain only the lines in the file below that have at least 8 columns (again, looking only at columns 6-20)... (3 Replies)
I have about 6000 files of the following format (three simplified examples shown; actual files have variable numbers of columns, but the same number of lines). I would like to concatenate the ID (*Loc*) and data lines, but not the others, as shown below. The result would be one large file (or... (3 Replies)
Hey,
How can i create randomly create time N times.
Suppose i want to create data for a particualr date 5 times...
Mon Jan 19 11:42:50
Mon Jan 19 19:16:40
Mon Jan 19 12:12:33
Mon Jan 19 14:26:27
Mon Jan 19 12:29:53
Mon Jan 19 13:30:31
I want the script to create N times randome... (2 Replies)