bash: read text file, get HTTP headers, save results

Question

I'm using Terminal in OS X 10.8 The challenge is to read text file (where each line is an url), get HTTP headers, save results to other text file

Tried this:

for line in cat ~/Desktop/a.txt; do curl -I line > ~/Desktop/b.txt;  done

plus multiple loop examples like

(while read l; do echo $l; done) < ~/Desktop/a.txt

or

cat ~/Desktop/a.txt | while read CMD; do
echo $CMD
done

It seems to me that I cannot create simple loop. Please, advise. Best,

jens-na · Accepted Answer · 2012-11-08 07:38:19Z

1

You can try something like this:

for i in $(cat test); do curl -I $i >> test2; done

This reads everything in the file test and appends the curl output to the file test2.

answered Nov 8, 2012 at 7:38

jens-na

2,2741 gold badge18 silver badges22 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

user1192422 Over a year ago

thank you for the fast reply. Unfortunately, it does not work :(

user1192422 Over a year ago

sorry, just found out that input file was empty (because of my recent experiments probably). the error is nodename nor servname provided, or not known

Collectives™ on Stack Overflow

bash: read text file, get HTTP headers, save results

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related