CODEWITHSUNDEEP
linuxbashshellksh
maihabunash
maihabunash

Reputation: 1702

ksh + compare numbers – two ways

the following example shows hot to compare numbers I give here two different ways

one way with the ">" and "<" and second way with "-gt" or "-lt"

both ways are work exactly so what the differences between them ? or maybe there are not difference ?

example 1

  ksh



  a=1
  b=2
  [[ $a > $b ]] && echo ok
  [[ $a < $b ]] && echo ok
  ok

example 2

  ksh

  a=1
  b=2
  [[ $a -gt $b ]] && echo ok
  [[ $a -lt $b ]] && echo ok
  ok

Upvotes: 2

Views: 9759

Answers (1)

Marko Teiste
Marko Teiste

Reputation: 362

In your examples there are no difference, but that is just an unfortunate choice of values for a and b.

-lt, -gt are for numeric comparison

< and > are for alphabetic comparison


 $ a=12
 $ b=6
 $ [[ $a -lt $b ]] && echo ok
 $ [[ $a < $b ]] && echo ok
ok

Upvotes: 3

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