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What system calls or commands do I need to use in order to execute a different program from an already running process?

Hi,
I'm trying to go through a file and replace in each word (separated by new lines if it matters) the first occurrence of a vowel with #.

works, but of course it replaces all vowels.
However,...

jot isn't a variable, its the mac equivalent of seq

I am trying to write a script using commands to print a sequence of numbers.
However, I can't get jot to recognize what I give it.

Terri$ cat mncmd
echo "m=$1"
echo "n=$2"
$jot $2
Terri$...

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

1. The problem statement, all variables and given/known data:

m and n are...

Use and complete the template provided. The entire template must be completed. If you don't, your post may be deleted!

1. The problem statement, all variables and given/known data:

a) Some Unix...