3 ms·

i don't see the problem with what you wrote. also, you could use expr if you don't like fiddling with parentheses when dealing with numeric values.

• chasil 4y ago
  A fork() will be imposed with expr; using the shell's native math is faster. In any case, I have never seen "best practices" for (numeric) type coercion and confirmation. Everybody seems to come up with something on their own.
  • znpy 4y ago
    If the overhead of a fork is too much for you you probably shouldn’t be writing a shell script anyway, so?
    • chasil 4y ago
      If your while loop is going to execute a million times, then removing an expr from it is going to save a million forks. That seems worthwhile to me.