Hi everyone,
Having trouble with sed. I searched the board and found some stuff, but still unclear.

I have a file named "userfile" which stores the users info in this form: email:username:password:

I want the user to be able to change their password.
i tried with sed s/oldpass/newpass/g userfile and it displayed to the standard output correct. then when i checked the userfile, it was still using the old password.

Then i found the "c" flag which is change. but then i try to test sed s/oldpass/newpass/c userfile i get a message
Function s/oldpass/newpass/c cannot be parsed

Can anyone help me? im just trying to allow a user to update their password and have the changes saved in userfile.

thanks!
primal

Try ...
sed "s/oldpass/newpass/g" userfile > userfile.new
mv userfile userfile.old
mv userfile.new userfile

whoo-hoo!! it worked!!
thanks Cameron
primal