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Oh, sorry, correction, I think there was alot of confusion about what I was looking for: I am just trying to edit this code:

#!/bin/bash if grep "$1" "$3" > /dev/null; then mv $3 $3.bak sed...

Ok thanks for the reply! :D

For Corona:
It's part of the book assignment so I have to do what it says, I don't have a choice haha. So unfortunately, your code doesn't work :(.

Danmero:
Code...

#!/bin/bash
if grep "$1" "$3" > /dev/null; then
mv $3 $3.bak
sed "s/$1/$2/g" $3.bak > $3
fi

Hello there, I am trying to edit this code so that it will produce a shell script called "subst"...

Ok, so I actually tried a different approach and it works, your code works great too :D

#!/bin/bash
if grep "$1" "$3" > /dev/null; then
mv $3 $3.bak
sed "s/$1/$2/g" $3.bak > $3
fi
However, i...

Thanks for the code above, but I'm afraid my knowledge of shell script does not extend that far :(...I do not know how to use the while command or done. I'm vaguely familiar with shift as well...
...

Hey thanks for that, it worked :D

but there's another problem now...we are trying now to create a second script called "subst2" that does the exact same thing as the "subst1" but leaves the file ...

My friend and I are working on a project together and we are trying to create a shell script that renames, replaces a string in a text file. The newly created file with the substitution would...

I'm really confused how to use a makefile.

Are you supposed to be make a file from emacs called MakeFile and put code in there to compile?

I am trying to create a makefile to compile two .cpp...