How to generate a sequence of numbers in Bash scripting

  • Use Bash 4’s brace expansion
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$ echo {1..10}
1 2 3 4 5 6 7 8 9 10
 
$ echo {1..10..2}
1 3 5 7 9
  • Use “seq” command
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$ seq 1 10
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10
 
$ seq 1 2 10
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9
 
$ echo $(seq 1 10)
1 2 3 4 5 6 7 8 9 10