Inserting text at begining of each line of text file using shell script

Question

I have a task to enter word http:// at begining of each line of text file. How this can be done using shell script

My text file is like:

agr.nc.in
mpi.ni.in
ir.o.in
chemis.go.in
da.ni.in
dgt.go.in
dgn.go.in

output file should be like:

http://agr.nc.in
http://mpi.ni.in
http://ir.o.in
http://chemis.go.in
http://da.ni.in
http://dgt.go.in
http://dgn.go.in

The regex for "beginning of line" is `^`. – tripleee Aug 14 '13 at 06:19 — tripleee, Aug 14 '13 at 06:19

score 1 · Accepted Answer · answered Aug 14 '13 at 06:19

1

You can use sed:

$ echo -e 'foo\nbar\nbaz'
foo
bar
baz
$ echo -e 'foo\nbar\nbaz' | sed 's|^|http://|'
http://foo
http://bar
http://baz

answered Aug 14 '13 at 06:19

phs

score 1 · Answer 2 · answered Aug 14 '13 at 06:52

1

to edit in place with sed:

sed -i 's|^|http://|' infile

to do it with shell only:

while read LINE || [ "$LINE" ];do echo "http://$LINE";done <infile >outfile

answered Aug 14 '13 at 06:52

technosaurus

score 1 · Answer 3 · answered Aug 14 '13 at 06:56

1

awk '$0="http://"$0' your_file

answered Aug 14 '13 at 06:56

Vijay

3 Answers3