[SOLVED] writing to a file using sed

dinakumar12 · 03-03-2011, 01:18 AM

Hi all,

i am having a the following line in a file

<property name="connection.password"></property>

i have to give password in this line, like this

<property name="connection.password">XXXXXX</property>

Is this possible to acheive this using sed command

Beause i have to do this for n number files. so if i have option in sed for this the i will be doing this using script.

Your suggestions please.

Thanks&regards,
Dinesh.

EricTRA · 03-03-2011, 01:29 AM

Hello,

If that's the only instance in a file then you can use sed like this:

Code:

sed -i 's/connection.password">/connection.password">YOURPASSWORD/g' filename

which will add your password in plain text in the file 'filename'. A great introduction and tutorial for Sed can be found here.

Kind regards,

Eric

dinakumar12 · 03-03-2011, 01:37 AM

Hi,

Thanks that works.

EricTRA · 03-03-2011, 01:52 AM

Hi,

You're welcome. If you consider your problem/question solved then please mark it as such using the Thread Tools.

Kind regards,

Eric

grail · 03-03-2011, 02:49 AM

Small tweak you can use also:

Code:

sed -i 's/connection.password">/&YOURPASSWORD/g' filename

dinakumar12 · 03-03-2011, 03:36 AM

Hi,

Sorry i have one more question. I am having the line as

<property name="connection.password">root</property>

in the file. I have to change the root to some other password. Can u please explain how can we do that using sed.

I know we can do that by replacing the string root from that line with another string using sed.

But i am having more string with the name root, but i need to change only this particular string.

Can u please post your suggestion.

dinakumar12 · 03-03-2011, 05:32 AM

Hi all,

Thanks Finally i got it worked by.

sed -i 's/connection.password">root/connection.password">MYNEWPASSWORD/g' filename

grail · 03-03-2011, 07:04 AM

Glad you got it

You can also use back referencing:

Code:

sed -r -i 's/(connection.password">)root/\1MYNEWPASSWORD/g' filename