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  1. #!/bin/bash
  2. # Basic arithmetic using double parentheses
  3. a=$(( 4 + 5 ))
  4. echo $a # 9
  5. a=$((3+5))
  6. echo $a # 8
  7. b=$(( a + 3 ))
  8. echo $b # 11
  9. b=$(( $a + 4 ))
  10. echo $b # 12
  11. (( b++ ))
  12. echo $b # 13
  13. (( b += 3 ))
  14. echo $b # 16
  15. a=$(( 4 * 5 ))
  16. echo $a # 20
Success #stdin #stdout 0s 4476KB
comments (?)
stdin
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Standard input is empty
stdout
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9
8
11
12
13
16
20
https://ideone.com/QvDhg8
language:
Bash (bash 5.0.3)
created:
4 years ago
visibility:
public

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