One addition:
The awk command substitutions could be replaced by printf statements and integrated in the next printf statement, for example the first one could be:
The dot "." in the %s format specifier marks the precision of the string.
--
With regards to the sleep command:
The POSIX specification says:
Quote:
OPERANDS
The following operand shall be supported:
time
A non-negative decimal integer specifying the number of seconds for which to suspend execution.
IMPLEMENTATION NOTES
[..]
The sleep command will accept and honor a non-integer number of specified seconds
(with a `.' character as a decimal point). This is a non-portable extension, and its
use will nearly guarantee that a shell script will not execute properly on another
system.
DESCRIPTION
Pause for NUMBER seconds. SUFFIX may be 's' for seconds (the default), 'm' for minutes,
'h' for hours or 'd' for days. Unlike most implementations that require NUMBER be an
integer, here NUMBER may be an arbitrary floating point number. Given two or more argu-
ments, pause for the amount of time specified by the sum of their values.
Hello,
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