Need help looping through a file and outputting each line in the file plus the output from curl

tempuser123 · 10-31-2018, 06:56 PM

Hello everyone!

I am having some trouble with a bash script. basically what I am trying to do is loop through a file (input.list) line by line and have it run a curl command against a website. I have it doing that right now, and it is outputting the data I want it to, but i also want it to display what is in the orinal file in the first column. I've listed some examples below.

Key
- script.sh : the script i am working on
- input.list : the input file
- output.list : the file i want it to output to

script.sh

Code:

#!/bin/bash

while read line; do
  echo "second column"
done < "input-test.list" > "output-test.list"

input.list

Code:

A
B
C
D

Output I am getting

Code:

second column
second column
second column
second column

Output I want to go into output.list

Code:

A: second column
B: second column
C: second column
D: second column

NOTE: I replaced the curl command with a quick 'echo' command for simplicity. but the 'second column' will be a random value that is parsed from the actual curl command that will be given.

If anyone could help me out that would be great! Thanks in advance!

astrogeek · 10-31-2018, 07:31 PM

From your description I think something like this should do the trick:

Code:

echo "${line}: ${second_column}"

...where ${second_column} is the data parsed from curl.

scasey · 10-31-2018, 07:33 PM

You need to include the contents of the variable line in your output. Does that hint help?

Oh. astrogeek showed you how...was this homework?

murugesan · 11-04-2018, 12:53 AM

Sample code for the same:

Code:

$ /bin/cat ./Looping_through_file.sh
#!/bin/bash
if [ ! -f "./input-test.list" ]
then
        echo "/bin/ls ./input-test.list"
        /bin/ls "./input-test.list"
else
        while read CURR_LINE
        do
                second_column=$(/usr/bin/head -1 /dev/urandom | /usr/bin/cksum | /bin/sed "s/ .*//;" |\
                /usr/bin/awk '{ printf( "%010d", $0); }')
                echo "$CURR_LINE: ${second_column}"
        done < "./input-test.list"
fi
$ ./Looping_through_file.sh
/bin/ls ./input-test.list
/bin/ls: cannot access './input-test.list': No such file or directory
$ echo -e "A\nB\nC\nD" > "./input-test.list"
$ ./Looping_through_file.sh
A: 2982344826
B: 0116823401
C: 0076856536
D: 2648229816
$