UNIX for Beginners Questions & Answers

#!/bin/bash
while read line
do
key= $(sed 's/\(.*\)\=.*/\1/' $line)
value=$(sed 's/.*\=//g' $line)
sed "s/$key/$value/g" test.txt
done <  bbb.txt

key= $(sed 's/\(.*\)\=.*/\1/' $line)

key=$(sed 's/\(.*\)\=.*/\1/' $line)

echo "$line" | sed ...

sed ... <<< "$line"

echo get_string_between("Hello my name is bob", "my", ""); //output: " name is bob"

private function get_string_between($string, $start, $end){ // Get
    if($start != ''){ //If $start is empty, use start of the string
        $string = ' ' . $string;
        $ini = strpos($string, $start);
        if ($ini == 0) return '';
        $ini += strlen($start);
    }
    else{
        $ini = 0;
    }

    if ($end == '') { //If $end is blank, use end of string
        return substr($string, $ini);
    }
    else{
        $len = strpos($string, $end, $ini) - $ini; //Work out length of string
        return substr($string, $ini, $len);
    }
}

#!/bin/bash
while read line
do
key= echo "$line" | sed 's/\(.*\)\=.*/\1/' 
value= echo "$line" | sed 's/.*\=//'
sed 's/$key/$value/g' test.txt
done < bbb.tx

#!/bin/bash
input=/home/wip4599/test.txt
while read line
do
key= echo "$line" | sed 's/\(.*\)\=.*/\1/' 
value= echo "$line" | sed 's/.*\=//'
sed 's/$key/$value/g' $input
done < bbb.txt

key=$(echo "$line" | sed 's/\(.*\)\=.*/\1/')

input=/home/wip4599/test.txt
while IFS="=" read key value
do
  sed "s/$key/$value/g" $input
done < bbb.txt