Shell script to remove outliers with IQR technique

Firerat · 09-28-2019, 09:37 PM

this will explain it

https://mywiki.wooledge.org/BashGuid..._and_.5B.5B.29

Quote:

Note that the comparison operators =, !=, >, and < treat their arguments as strings.
In order for the operands to be treated as numbers, you need to use one of a different
set of operators: -eq, -ne (not equal), -lt (less than), -gt, -le (less than or equal to),
or -ge.
Pop quiz: Come up with an example that shows the difference between < and -lt.
Cue Jeopardy music...
Since "314" comes before "9" lexicographically (i.e. the order that the dictionary would put them in),
[ considers the former to be < than the later;
whereas, [ considers "314" NOT to be -lt "9",
because three hundred fourteen is NOT less than nine.

michaelk · 09-28-2019, 10:03 PM

It is all about syntax and the difference between single brackets [ ], double brackets [[ ]] and double parentheses (( )) as explained in the link.

Linux.tar.gz · 09-29-2019, 06:04 AM

Ok, thanks again !