code that would identify the identical rows

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Hello! I have a text file (.txt) consisting of 'M' rows and 3 columns. I would like to write a code that allows to identify the identical rows (the highlighted rows) and keep only one copy, of each repeated row, within the text file.
As a result, if a row repeats one or more times, I have to recreate the text file (.txt):
- keeping the lines that do not repeat
- bringing back only once the lines that are repeated
For example:
I thank you if anyone can help me!

Accepted Answer

Arif Hoq
Arif Hoq on 18 Nov 2022
a=table2array(readtable("file.txt"));
output=unique(a,'rows','stable')
output = 12×3
233.0000 353.0000 1.4912 233.0000 352.0000 1.4912 353.0000 296.0000 64.1228 353.0000 295.0000 64.1228 353.0000 216.0000 64.1228 121.0000 217.0000 162.5439 121.0000 216.0000 162.5439 121.0000 215.0000 162.5439 119.0000 274.0000 184.9123 119.0000 273.0000 184.9123
  3 Comments
Alberto Acri
Alberto Acri on 18 Nov 2022
Thank you @Arif Hoq!
Is it possible to directly identify the lines that have repetition?
In the case of 'file.txt' have something like this:
coordinates repeatability
2.3300000e+02 3.5300000e+02 1.4912281e+00 2
3.5300000e+02 2.9500000e+02 6.4122807e+01 1

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