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How can i make something like
if (echo "$arg2" | egrep -s '^[0-9]+\.[0-9]+km/h+$|^[0-9]+km/h+$'); then
not to output the value of $arg2 on the screen, evertime i get match it outputs the value of...

How would you convert lets say a 1000 minutes to hours, minutes, seconds

If no arguments are entered I wanna be able to read 2 arguments, i have done like this but it doesnt work:

x=0

until [ $x -eq 1 ] #loop starts

do

if [ $# -eq 0 ]; then
echo...

I am using bash shell, thanks for reply, but what i wanna do is have something like this

24. 40 (where 40 is on 15th character of the screen)

If i have a variable which is a decimal number, i.e 34.05 How can you make decimal point fall on the 15th character on the screen? Or any other that you can specify? Can you do it using sed or...

Can anyone help me with setting up sed regular expression to match the following format?

12hr:30min

I encountered another problem whenever i devide a smaller number by a bigger number i.e. 4/9 instead of getting the answer as 0.4444444444 i just get 0

Why is that, and what can i do t oget the...

What does scale=12 mean?

How can i devide decimal numbers?

I am getting this kind of error:
line 18: 200.2/40.234: syntax error in expression (error token is ".2/40.234")

What can i do to work around this problem?
...

Hey guys i am trying to right script with this:

Input
Valid user input can be in the following formats:
Distance: in miles or kilometers, e.g. 100mi or 100km
Speed: miles per hour or kilometers...