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Editorial Team
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Asked: 2026-05-13T07:00:49+00:00

Note: Bash 3.00 How to substitute this example string 123456789 , to look like

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Note:

  • Bash 3.00

How to substitute this example string 123456789, to look like 123-456-789

#!/bin/sh
# trivial example
read number;
# monotically substitute '-' into string after first three and dix digits
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1 Answer

  1. Editorial Team

    Without the use of sed:

    $ number=123456789
$ number=${number:0:3}-${number:3:3}-${number:6:3}
$ echo $number
123-456-789
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