For foo in bar; do

angel115 · 11-16-2005, 02:33 PM

I have 3 file
file1

Code:

file1 line1
file1 line2

file2

Code:

file2 line1
file2 line2

file3

Code:

file3 line1
file3 line2

and i want an output like this:

Code:

file1 line1 + file2 line1 = file3 line1
file1 line2 + file2 line2 = file3 line3

I was thinking to use

For in do
and do some thing like this

Code:

#!/bin/bash
for linefile1 in $( cat file1 ); do
  for linefile2 in $( cat file2 ); do
    for linefile3 in $( cat file3 ); do
cat >> my_output_file << EOF
$linefile1 + $linefile2 = $linefile3
EOF

but it doesn't work...

f

homey · 11-16-2005, 04:52 PM

Do you mean something like this....

Code:

#!/bin/bash
# Example: ./test file1.txt file2.txt

>file3.txt
cat $1 $2 |\
while read a ; do
  echo $1 $a + $2 $a = file3.txt $a >> file3.txt
done