exploiting root

Ok. So I have my computer sitting next to mine. It's a standard RedHat 9 box with standard installs set. I set up an account for me to log onto with minimal access. I do however have access to a vi editor. So I type in my source code. How do I save/run this code as a command? In other words my question is so simple most books don't have it. How do I save my script and run it? This question I realise isn't very hard, but I cant find the answer.

Ensure that the file has appropriate permissions (i.e.., execute). Depending on whether it's a c program or a shell script you'll do either:

./scriptname

OR

gcc filename.c -o filename

./filename

i reccomend using something like pico, nano, or joe as a simple text editor. VI is not exactly user friendly. i think to quit wtih saving its something like :q!

:q! is to save and overread existing permissions (usually used by root)

In vi to

- save to file you do :w

- save and exit you do :wq

- save, exit and override permissions :wq! (usually root)

Check out this tutorial on using vi. I'd actually recommend getting used to using it because of the power and the fact that you can always find it on any *nix distribution (AFAIK)

I would also suggest Nano or something. VI takes some getting used to. Like wassup said it is not the most friendly editor there is. Actually Red Hat 9 comes with pico.

pico filename.txt

Find some command lists for VI. It is an incredibly powerful text editor if you know what you are doing. Google for commands..

-Cheers-


PS: http://www.chem.brown.edu/instructions/vi.html

So. I open vi. I type vi script10112 for example. I use regular scripting not C or anything of the sort. Then I do esc to get back into vi command mode. Do I just type wq, press enter and then it's saved to the appropriate area. Since I do #!/bin/bash in the very beginning, it should be ready to be executed right? So I exit and save, then i type script10112 to execute? Or do I need to chmod it to executable? Thanks for putting up with me guys!

yes, you do have to chmod (to like 755) to make it executable

or chmod +x

So...let's recap:

(Type) vi [filename]
(To edit file - press) i
(To stop editting) ESC
(To Save and quit) :wq!
(In the shell, give permissions) chmod 755 [filename]
(Assuming you had !/bin/bash, run) ./[filename]
(If not) bash [filename]

Emacs is another good editing tool.

Quote:

---

So...let's recap:

(Type) vi [filename]
(To edit file - press) i
(To stop editting) ESC
(To Save and quit) :wq!
(In the shell, give permissions) chmod 755 [filename]
(Assuming you had !/bin/bash, run) ./[filename]
(If not) bash [filename

---

Don't forget to compile it if you need to. ;-)

As MsM said
gcc filename.c -o filename
then
./filename

MB

MB> Its a shell script, no need to compile

parz> yeah, you got it

Yes - I recommend everyone learns how to use emacs (or rather, becomes familiar with it - there are so many add-on libraries and such that mastering it can take a while). I prefer to use vi, mostly because I am logged in via ssh, and depending on my client, I have to reset my keys (for meta, ^[letter], etc). Besides that - if you know how to use vi, you seem to automatically receive a badge of honor - "Ohh...HE uses Vi....wow...." - of course, the effect varies - most experienced sysadmins know that vi is both powerful and fairly easy to use, given time.