Bashscripts.org

Greetings,

I'm sure a lot of people will be thinking I'm a total bash noob, well I'm still new but learning fast.

I need to find out how to find text in a text file and put a line of text i want AFTER the found line... example.


Let's say I have a file called list.txt and let's say there's a line in it "this is a line" and I want to put in "http://www.google.com/" (without quotes) AFTER "this is a line" (without quotes). How would I do that with bash so I can put it into a script?

I've seen a lot of replacing text within files but I don't want to "replace" the text, i want to "add text after" a particular line.

also while I'm here, is there a simple code to use that will make sure a script is run as root and exit with a sentence if not?

thank you.

This is a pretty common way of checking for root.... use this function



and call it with checkforroot




YES, you DO want to replace that line of text..... with 2 lines of text....... the current line (no change) and the 2nd line (the line you want to add)..... i'd use sed or ed for that.

thank you, that information is very useful to me

Your welcome Glad I could help.

one question, how exactly do i add 2 lines with sed? ive been trying to figure it out but have yet to figure it out.

also, not sure if im doing something wrong or what, but the checkforroot script doesnt work i tried it in a test script and i wasnt a root user and it let the script proceed.