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[Little_Dice]

I am trying to write a program in shell to replace strings in a text file. I'm pretty sure that my method is right, I just think I am not declaring , calling my variables correctly.

#!/bin/tcsh


#calling variables
@ replacements=0
@ i=0
set file
set string[index]
set replacement[index]


#Introduction
echo "This script will substitute a pattern with another one."
echo "How many strings will you be replacing?"
$replacements
echo "What is the path to the file you want to modify?"
$file
cp $file $file.saved

#The Meat
while ( $i<= $replacements)
echo "Enter $i pattern."
$string[$i]
echo "Enter what you want pattern $i replaced with"
$replacement[$i]
sed 's/$string[$i]/$replacement[$x]/g' $file
$i++
end

[Kenny]

not tried your code...but noticed syntax... re this line:

sed 's/$string[$i]/$replacement[$x]/g' $file

try it this way

sed -i "s/oldword/new-word/g" $file

note the double quotes