$3.$ Write a bash function that will accept a two integer arguments, x and y$,$ returning

$0$ if x is a factor of y or $1$ if it is not. Invoke the function and print $$is a factor$$ or

$$not a factor$$ according to the result.

Sed

$4.$ Write a sed script that will:

a$.$ Remove the first number from a line, if it begins with a number

i$.$ For these lines, surround the entire line in $...$ tags

b$.$ Trim any repeat sequences of tabs and$/$or spaces down to a single space

c$.$ Replace all sequences of digits that reside immediately prior to a

hyphen with a single $$x$.$

Example input:

$25323$xr output freq $150\mathrm{.}32$

$8892$vfr outbound N$2137$ cs $12-01-1990$

ifr inbound N$9983$ heavy

end of data

p$.3$

Example output:

xr output freq $150\mathrm{.}32$

vfr outbound N$2137$ cs x$-$x$-1990$

ifr inbound N$9983$ heavy

end of data